Vonage Engineering Mission

Vonage is emerging as a leader in the $100B+ cloud communications platform (CPaaS) market and is part of the Ericsson group. Our APIs and SDKs are critical to customers like Airbnb, Viber, WhatsApp, Snapchat, and many others, enabling them to connect with their customers globally. As businesses shift to real-time, customer-centric communication models, Vonage is experiencing impressive growth.

Why This Role Matters

The Engineering team at Vonage is a rapidly growing group of talented engineers tackling the challenges of high-performance distributed systems and real-time data processing. We seek a Senior Software Engineer to lead large projects or multiple initiatives simultaneously. This role is pivotal to team strategy and project outcomes, involving mentorship, significant architectural contributions, and broad influence on team success.

What You Will Do

• Develop services and features for innovative products.
• Create scalable and resilient solutions that support business growth.
• Work on public cloud infrastructure.
• Explore our team work at Vonage Cloud Runtime.

What We Value

At Vonage, we value disruption, execution, and collaboration. We take pride in the global impact of our work, enabling unprecedented communication capabilities. We have ambitious goals and seek individuals who are self-confident, customer-focused, and committed. Our team iterates quickly, learns from failures, and takes smart risks. We uphold integrity, empower our employees, and seek entrepreneurial spirits ready to contribute to our mission.

Requirements

• Experience: 3+ years in software engineering.
• Technical Expertise: Proficiency in Golang; experience with technologies like Kubernetes, Redis, Clickhouse, Postgres, and NATS.
• Software Engineering Skills: Excellent practical understanding of high-performance, highly distributed computing, and strong focus on testing.
• Design Principles: Deep understanding of Object-Oriented Design, standard design patterns, and experience with multithreaded architectures, web services, and caching.
• Adaptability: Demonstrated ability to learn and work across various technologies and products, continuously seeking to innovate and bring new technologies to their work.
• Problem-Solving: Solid understanding of the business context, strong problem-solving skills, and the ability to design applications, apply best practices, and handle performance optimization and security issues.
• Communication Skills: ability to articulate technical concepts, influence decision-making, and communicate effectively with stakeholders across the business. Ability to lead discussions, refine acceptance criteria, and manage risks and dependencies.

Additional Requirements

• Architectural Decisions: Regular contributions to architectural decisions that affect the product’s future direction.
• Mentorship: Providing mentorship to other engineers, significantly impacting the team’s success.
• Innovation: Capable of making architectural suggestion, working with the team on technology choices, and providing quality technical solution.
• Application Level Problem-Solving: Handling complex application-level or engineering problems independently.
• Team-Level Architecture: contributing to team-level architecture.
• Public Cloud: Experience working with public cloud infrastructure, especially AWS.
• SQL/NoSQL: Knowledge of SQL/NoSQL databases.
• Modern Programming Environment: Practical experience deploying code in a modern programming environment using tools such as Docker and Kubernetes.

Why Vonage

Vonage values disruptive innovation, getting things done, and working with passion and integrity. We empower our employees to enable simplified communications between enterprises and their customers. Our significant growth is driven by exceptional people. We seek individuals who are self-confident, customer-focused, structured, and committed. If our values resonate with you, we encourage you to apply.

We are an equal opportunity employer and value diversity. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Note: The purpose of this profile is to provide a general summary of essential responsibilities for the position and is not meant as an exhaustive list. Assignments may differ for individuals within the same role based on business conditions, departmental need or geographic location.

The salary range for this role is $50,000 - $120,000 per year (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Principal Machine Learning Engineerwho is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

You will be responsible for overseeing the design, development, and deployment of machine learning models that power and enhance our financial platform. In this role, you will drive the creation of scalable machine learning solutions for personalized recommendations in the Sezzle marketplace, fraud detection, and credit risk assessment, utilizing a combination of cloud services, open-source tools, and proprietary algorithms.

Your leadership will be key in blending machine learning development and operations (MLOps) to automate and optimize the full lifecycle of our ML models. You will collaborate with a team of engineers and data scientists to build large-scale, high-quality solutions that address diverse challenges in the shopping and fintech space. You’ll ensure our AI-driven features are robust, efficient, and scalable as we continue to grow.

Responsibilities:

• Design, Build, and Maintain Scalable ML Infrastructure: Lead the design and development of scalable machine learning infrastructure on AWS, utilizing services like AWS Sagemaker for efficient model training and deployment.
• Collaborate with Product Teams: Work closely with product teams to develop MVPs for AI-driven features, ensuring quick iterations and market testing to refine solutions effectively.
• Develop Monitoring & Alerting Frameworks: Create and enhance monitoring and alerting systems for machine learning models to ensure high performance, reliability, and minimal downtime.
• Support Cross-Departmental AI Utilization: Enable various departments within the organization to leverage AI/ML models, including cutting-edge Generative AI solutions, for different use cases.
• Provide Production Support: Offer expertise in debugging and resolving issues related to machine learning models in production, participating in on-call rotations for operational troubleshooting and incident resolution.
• Scale ML Architecture: Design and scale machine learning architecture to support rapid user growth, leveraging deep knowledge of AWS and ML best practices to ensure robustness and efficiency.
• Mentor and Elevate Team Skills: Conduct code reviews, mentor team members, and elevate overall team capabilities through knowledge sharing and collaboration.
• Stay Ahead of the Curve: Stay updated with the latest advancements in machine learning technologies and AWS services, driving the adoption of cutting-edge solutions to maintain a competitive edge.

Minimum Requirements:

• Bachelor's degree in Computer Science, Computer Engineering, Machine Learning, Statistics, Physics, or a relevant technical field, or equivalent practical experience.
• At least 6+ years of experience in machine learning engineering, with demonstrated success in deploying scalable ML models in a production environment.

Ideal Skills & Experience:

• Deep expertise in one or more of the following areas: machine learning, recommendation systems, pattern recognition, data mining, artificial intelligence, or related technical fields.
• Proven track record of developing machine learning models from inception to business impact, demonstrating the ability to solve complex challenges with innovative solutions.
• Proficiency with Python is required, and experience with Golang is a plus.
• Demonstrated technical leadership in guiding teams, owning end-to-end projects, and setting the technical direction to achieve project goals efficiently.
• Experience working with relational databases, data warehouses, and using SQL to explore them.
• Strong familiarity with AWS cloud services, especially in deploying and managing machine learning solutions and scaling them in a cost-effective manner.
• Knowledgeable in Kubernetes, Docker, and CI/CD pipelines for efficient deployment and management of ML models.
• Comfortable with monitoring and observability tools tailored for machine learning models (e.g., Prometheus, Grafana, AWS CloudWatch) and experienced in developing recommender systems or enhancing user experiences through personalized recommendations.
• Solid foundation in data processing and pipeline frameworks (e.g., Apache Spark, Kafka) for handling real-time data streams.

About You:

• • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
  • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
  • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
  • You earn trust - you listen attentively, speak candidly, and treat others respectfully.

What Makes Working at Sezzle Awesome:

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators. We believe in surrounding ourselves with only the best and the brightest individuals. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-Remote

The salary range for this role is $50,000 - $120,000 per year (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Principal Machine Learning Engineerwho is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

You will be responsible for overseeing the design, development, and deployment of machine learning models that power and enhance our financial platform. In this role, you will drive the creation of scalable machine learning solutions for personalized recommendations in the Sezzle marketplace, fraud detection, and credit risk assessment, utilizing a combination of cloud services, open-source tools, and proprietary algorithms.

Your leadership will be key in blending machine learning development and operations (MLOps) to automate and optimize the full lifecycle of our ML models. You will collaborate with a team of engineers and data scientists to build large-scale, high-quality solutions that address diverse challenges in the shopping and fintech space. You’ll ensure our AI-driven features are robust, efficient, and scalable as we continue to grow.

Responsibilities:

• Design, Build, and Maintain Scalable ML Infrastructure: Lead the design and development of scalable machine learning infrastructure on AWS, utilizing services like AWS Sagemaker for efficient model training and deployment.
• Collaborate with Product Teams: Work closely with product teams to develop MVPs for AI-driven features, ensuring quick iterations and market testing to refine solutions effectively.
• Develop Monitoring & Alerting Frameworks: Create and enhance monitoring and alerting systems for machine learning models to ensure high performance, reliability, and minimal downtime.
• Support Cross-Departmental AI Utilization: Enable various departments within the organization to leverage AI/ML models, including cutting-edge Generative AI solutions, for different use cases.
• Provide Production Support: Offer expertise in debugging and resolving issues related to machine learning models in production, participating in on-call rotations for operational troubleshooting and incident resolution.
• Scale ML Architecture: Design and scale machine learning architecture to support rapid user growth, leveraging deep knowledge of AWS and ML best practices to ensure robustness and efficiency.
• Mentor and Elevate Team Skills: Conduct code reviews, mentor team members, and elevate overall team capabilities through knowledge sharing and collaboration.
• Stay Ahead of the Curve: Stay updated with the latest advancements in machine learning technologies and AWS services, driving the adoption of cutting-edge solutions to maintain a competitive edge.

Minimum Requirements:

• Bachelor's degree in Computer Science, Computer Engineering, Machine Learning, Statistics, Physics, or a relevant technical field, or equivalent practical experience.
• At least 6+ years of experience in machine learning engineering, with demonstrated success in deploying scalable ML models in a production environment.

Ideal Skills & Experience:

• Deep expertise in one or more of the following areas: machine learning, recommendation systems, pattern recognition, data mining, artificial intelligence, or related technical fields.
• Proven track record of developing machine learning models from inception to business impact, demonstrating the ability to solve complex challenges with innovative solutions.
• Proficiency with Python is required, and experience with Golang is a plus.
• Demonstrated technical leadership in guiding teams, owning end-to-end projects, and setting the technical direction to achieve project goals efficiently.
• Experience working with relational databases, data warehouses, and using SQL to explore them.
• Strong familiarity with AWS cloud services, especially in deploying and managing machine learning solutions and scaling them in a cost-effective manner.
• Knowledgeable in Kubernetes, Docker, and CI/CD pipelines for efficient deployment and management of ML models.
• Comfortable with monitoring and observability tools tailored for machine learning models (e.g., Prometheus, Grafana, AWS CloudWatch) and experienced in developing recommender systems or enhancing user experiences through personalized recommendations.
• Solid foundation in data processing and pipeline frameworks (e.g., Apache Spark, Kafka) for handling real-time data streams.

About You:

• • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
  • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
  • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
  • You earn trust - you listen attentively, speak candidly, and treat others respectfully.

What Makes Working at Sezzle Awesome:

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators. We believe in surrounding ourselves with only the best and the brightest individuals. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-Remote

Oddball believes that the best products are built when companies understand and value the things they are working on. We value learning and growth and the ability to make a big impact at a small company. We believe that we can make big changes happen and improve the daily lives of millions of people by bringing quality software to the federal space. 

We are hiring an Engineering Manager to work on a pivotal Federal program that is making a positive impact on millions of Americans' daily lives. 

What you'll be doing:

Leading and managing a team of great engineers which includes being responsible for the planning, executing and direction of the team. This role will require strong communication skills, working in an Agile environment, in-depth knowledge of APIs and understanding the business use case of the software being built.

What you’ll bring:

• Strong experience with Angular, GoLang, React and AWS; Rails experience preferred
• 10+ years experience in software development/web application development, specializing in microservices architecture
• 5+ years experience leading multi-disciplinary teams of designers and developers
• Proven track record of architecting and delivering enterprise-level reliable and scalable solutions
• Experience working with FHIR, HL7 formats.
• Provide technical leadership, guidance and support while nurturing a collaborative, innovative, and inclusive culture
• Ability to successfully breakdown technical items in discussions with the business users
• Strong verbal and written communication skills directed at both technical and non-technical audiences
• Capable of taking direction from senior leadership and translating into concrete next steps and actions

Requirements:

• Must be a US Citizen and able to work domestically 
• Must be able to attain low-level security clearance 

Education:

• Bachelor’s degree

Benefits:

• Fully remote
• Annual stipend
• Comprehensive Benefits Package
• Company Match 401(k) plan
• Flexible PTO, Paid Holidays

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities:

Oddball is an Equal Opportunity Employer and does not discriminate against applicants based on race, religion, color, disability, medical condition, legally protected genetic information, national origin, gender, sexual orientation, marital status, gender identity or expression, sex (including pregnancy, childbirth or related medical conditions), age, veteran status or other legally protected characteristics. Any applicant with a mental or physical disability who requires an accommodation during the application process should contact an Oddball HR representative to request such an accommodation by emailing hr@oddball.io 

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)

Compensation:

At Oddball, it’s important each employee is compensated competitively and fairly. In alignment with state legal requirements. A range for the included position is listed below. Be advised, actual offer details are determined by job category, job location, and candidate skill level.

United States Wage Range: $130,000 – $180,000

The salary range for this role is $2,800 - $6,000 per month (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

Compensation:

For this mid-level development role, with 3-7 years of experience, the compensation range is $2,800 - $6,000 USD per month. This range is designed to reflect the skills, experience, and value brought to the team, ensuring competitive and fair pay within the industry.

About the Role: 

We are seeking a talented and motivated Software Engineer II who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.
 As a Software Engineer II, you will be responsible for solving our most challenging problems along with a highly-motivated team.

In this role, you will work closely with other engineers across multiple teams to provide high-quality, scalable, and innovative products. Your day-to-day responsibilities will include partnering with other engineers to design, develop, and deliver new features. As your skills grow so will the size and scope of the projects which you’ll be involved in. Sezzle has a strong culture for promotion with defined paths through Engineering that matches all levels. You’ll be working as part of a full-stack Engineering team which has varied disciplines.

Key Role Responsibilities: 

• Build and maintain new innovative product features focused on actively learning new areas of the product
• Collaborate with owners for different product features to gain insight and offer constructive suggestions for improvements
• Be an active participant in design/architecture discussions sharing your ideas while building the next generation of features for the Sezzle platform  
• Hands-on with our codebase and a contributor to code reviews
• Mentor other engineers who are starting along their career path
• Work with the team to continuously build and deploy scalable solutions
• Assist in planning, estimations, and completion for projects brought up by the team stakeholders

Minimum Requirements: 

• Experience solving technical problems as part of a team
• Bachelor's in computer science (preferred) or equivalent related experience 
• Familiarity with modern Frontend Development, with React experience preferred
• Ability to solve problems with backend-focused languages like Go or similar compiled statically typed language
• Intermediate understanding of relational databases like MySQL

Preferred Knowledge and Skills:

• Knowledgeable in writing automated tests for applications (unit, integration, end-to-end)
• Familiar with the basic principles and design of RESTful APIs
• Basic knowledge of a Microservice Architecture
• Close familiarity with software engineering tools, software development methodology, and release processes

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit- you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.
• You deliver results- you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle.

Sezzle’s Technology Stack:

• Languages:Golang, Typescript, Python
• Frontend:Typescript - React and React Native
• Backend:Golang
• Database:MySQL, Postgres, Elasticsearch
• DevOps & Cloud:AWS, Kubernetes
• Version Control:Git
• CI/CD:Gitlab
• Testing:Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote

The salary range for this role is $4,600 - $8,500 per month (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

Compensation:

For this senior development role, with 8+ years of experience, the compensation range is $4,600 - $8,500 USD per month. This range acknowledges the extensive expertise, leadership capabilities, and significant contributions expected at this level, offering a competitive salary to reflect the value of advanced skills and experience.

About the Role: 

We are seeking a talented and motivated Senior Software Engineer who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

As a Senior Software Engineer with Sezzle, you will work with a highly-motivated team to tackle interesting and challenging problems across multiple areas of the organization. Your experience and guidance will help other members of the team level-up their own skills as well.

In this backend focused role, you will work closely with stakeholders from Product, Support and the business. You’ll also partner with other engineering teams to provide high-quality, scalable, and innovative solutions to internal and customer problems. Your day-to-day responsibilities will include designing, developing, and delivering new features, as well as unblocking and mentoring your teammates.

This role has both an internal and external focus, your contributions will make a meaningful difference in the day-to-day lives of your peers at Sezzle, enhancing their ability to support our business and customers, and you will have opportunities to take any feedback and iterate.

Key Role Responsibilities: 

• Design software applications and features in Golang and React
• Help build out a distributed architecture, creating solutions that work within it, maintaining consistency while scaling highly
• Coordinate with internal company stakeholders to design market winning products
• Develop and collect metrics to drive continuous improvement of existing products
• Deliver high quality features which can be tested and adheres to reporting standards
• As needed, lead small development teams to bring a project to market
• Mentor other engineering teammates to help elevate their experience and knowledge

Minimum Requirements: 

• At least 7 years of full-stack software engineering experience
• Experience bringing new ideas and building consensus on the path forward
• Experience with building and serving REST APIs using Go and Java Python or a similar language.
• Experience working in a distributed, cloud-based architecture, with either design patterns like transactional outboxes, or queuing tools like RabbitMQ, SQS, Kafka
• BS in Computer Science or similar degree, or equivalent work experience.

Preferred Knowledge and Skills:

• Experience with SQL based RDMS through an ORM tool
• Comfortable using observability platforms like Prometheus, or vendor solutions like NewRelic or Datadog to instrument your code for production monitoring and alerting.
• DevOps experience with CI/CD pipelines
• Familiarity with containerized micro-service architecture deployed with Kubernetes on AWS
• Demonstrated history of delivering commercial APIs and web applications
• A clear record of getting products to market and prioritizing solutions and improvements based on stakeholder/customer feedback.

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit- you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.
• You deliver results- you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle.

Sezzle’s Technology Stack:

• Languages:Golang, Typescript, Python
• Frontend:Typescript - React and React Native
• Backend:Golang
• Database:MySQL, Postgres, Elasticsearch
• DevOps & Cloud:AWS, Kubernetes
• Version Control:Git
• CI/CD:Gitlab
• Testing:Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote

The salary range for this role is $1,500 - $3,000 per month (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role:

We are seeking a talented and motivated  Junior Software engineerwho is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement. The Junior Software Engineer will assist us with the design, development, and installation of software solutions. Your duties will include development, writing code, and documenting functionality. You should be able to build high-quality, innovative and fully performing software in compliance with coding standards and technical design.

Compensation:

For this junior development role, with 0-3 years of experience, the compensation range is $1,500 - $3,000 USD per month. This range is designed to accommodate early-career professionals and reflects the foundational skills and potential for growth within the role.

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Cognitive test (12 min)
• Coding assessment (~1.5 hours)
• Potential English assessment
• Interview with recruiters (30 min)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

Sezzle Technical Stack:

• Golang backend, React / React Native front-end
• Grafana / Loki / Prometheus metrics
• Kubernetes
• AWS
• Amazon Aurora (MySQL) RDS
• Gitlab CI/CD deployments
• Unit, Integration, and end-to-end testing

Responsibilities:

• Be an integral part of the software development lifecycle
• Work as an integrated team member developing new features
• Evaluate and deploy software tools, processes, and metrics
• Provide support and consulting on software systems usage
• Ensure compliance with project plans and industry standards

Ideal Skills and Experience:

• Experience working on single page web applications (SPA)
• Experience with backend API development
• Experience with relational database storage and retrieval
• Familiarity with software engineering tools, software development methodology, and release processes
• BS degree in Computer Science or Engineering, or equivalent experience

Sezzle’s Technology Stack:

• Languages:Golang, Typescript, Python
• Frontend:Typescript - React and React Native
• Backend:Golang
• Database:MySQL, Postgres, Elasticsearch
• DevOps & Cloud:AWS, Kubernetes
• Version Control:Git
• CI/CD:Gitlab
• Testing:Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

#Li-remote

Company Overview: 

At Praetorian, we are bringing together the world's brightest minds in pursuit of solving the cybersecurity problem by reducing the friction of security and enabling the next wave of technological innovation. From projects that range from cryptocurrency exchanges to autonomous vehicles and from medical device platforms to space telescopes, we apply expertise and engineering to help secure our customers.

Explore our exciting New Hire Survival Guide to dive into Praetorian's mission, vision, values, and culture! Discover our competitive benefits and perks we offer.

Career Opportunity:

• Join an industry with massive socio, economic, and political importance in the 21st century
• Work alongside some of the best and the brightest minds in the security industry
• Work with prominent clients and help them solve hard security problems
• Leave an indelible mark on a company where individual input has real impact
• Align your career trajectory with a hyper-growth company that is on the move

Core Responsibilities:

• Provide technical execution on challenging offensive security projects for our customers
• Identify nuanced vulnerabilities in advanced systems
• Develop custom methodologies, payloads, exploits, and tools to ensure project success
• Develop documentation for novel mitigation strategies to emerging or undocumented security risks identified in client environments
• Develop comprehensive reports and presentations for our customers
• Serve as a mentor to other engineers in their technical and professional development
• Collaborate with the security community to develop novel attack techniques, tactics, and procedures (TTPs) through Praetorian’s Security Blog and other forms of community engagement

Desired Qualifications:

• Demonstrated passion for offensive security and adversarial engineering
• 2+ years of experience in one or more of the following offsec domains: software, hardware, network, or cloud penetration testing
• Ability to write technical reports and present technical findings both internally and externally
• Experience with startup and/or high-tech companies

+1 Qualifications:

• Prior security consulting experience a major plus
• Software development experience in core offsec languages such as golang or python
• Capture-the-flag, CCDC, CPTC or other security related competitions
• Ranked achievements on testing platforms such as Hack the Box, Tryhackme, Portswigger and similar 
• Track record in vulnerability research, exploit development, and CVE assignments
• Demonstrated open source contribution with git commits to popular offsec projects
• Security community experience via presentations, conference attendance, blogs, white papers and similar 
• PNPT, BSCP, OSCP, OSWE, OSCE, OSEP, OSED, CRTO, cloud certifications and similar 
• Bachelors degree in computer science, computer engineering, mathematics, or physics

Desired Behaviors:

• Fanatical passion for cybersecurity and the challenges it presents
• Customer centric focus with an obsessive need to wow and delight each client
• Ability to maintain high levels of output and work ethic
• Personable individual who enjoys working in a team-oriented environment
• Self-starter and independent learner that is able to spin up quickly

Compensation & Benefits:

• Competitive salary
• Equity Incentive Plan, offering ownership stakes in the company
• Continuous learning opportunities through our internal Learning & Development (L&D) program, including training, certifications, and conferences to support your career growth
• Recognition and rewards for speaking engagements at industry events and conferences
• Comprehensive health and dental insurance coverage
• Immediate 401(k) matching
• Paid maternity and paternity leave

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.

We are committed to an inclusive and diverse Praetorian.  We are an equal opportunity employer.  We do not discriminate based on race, ethnicity, color, ancestry, national origin, religion, sex, sexual orientation, gender identity, disability, veteran status, genetic information, marital status, or any other legally protected status.

We believe in clarity and fairness from the start. For candidates based in California, Colorado, Washington, and New York, the estimated base salary range for this role is $120,000-$175,000. The final offer will be thoughtfully determined based on various factors, including your unique skills, experience, and location. At Praetorian, we recognize that great talent comes with diverse backgrounds—and we’re committed to ensuring each offer reflects the value you bring to our team.

The salary range for this role is $50,000 - $95,000 per year (Gross in USD) 

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Principal Machine Learning Engineerwho is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

You will be responsible for overseeing the design, development, and deployment of machine learning models that power and enhance our financial platform. In this role, you will drive the creation of scalable machine learning solutions for personalized recommendations in the Sezzle marketplace, fraud detection, and credit risk assessment, utilizing a combination of cloud services, open-source tools, and proprietary algorithms.

Your leadership will be key in blending machine learning development and operations (MLOps) to automate and optimize the full lifecycle of our ML models. You will collaborate with a team of engineers and data scientists to build large-scale, high-quality solutions that address diverse challenges in the shopping and fintech space. You’ll ensure our AI-driven features are robust, efficient, and scalable as we continue to grow.

Responsibilities:

• Design, Build, and Maintain Scalable ML Infrastructure: Lead the design and development of scalable machine learning infrastructure on AWS, utilizing services like AWS Sagemaker for efficient model training and deployment.
• Collaborate with Product Teams: Work closely with product teams to develop MVPs for AI-driven features, ensuring quick iterations and market testing to refine solutions effectively.
• Develop Monitoring & Alerting Frameworks: Create and enhance monitoring and alerting systems for machine learning models to ensure high performance, reliability, and minimal downtime.
• Support Cross-Departmental AI Utilization: Enable various departments within the organization to leverage AI/ML models, including cutting-edge Generative AI solutions, for different use cases.
• Provide Production Support: Offer expertise in debugging and resolving issues related to machine learning models in production, participating in on-call rotations for operational troubleshooting and incident resolution.
• Scale ML Architecture: Design and scale machine learning architecture to support rapid user growth, leveraging deep knowledge of AWS and ML best practices to ensure robustness and efficiency.
• Mentor and Elevate Team Skills: Conduct code reviews, mentor team members, and elevate overall team capabilities through knowledge sharing and collaboration.
• Stay Ahead of the Curve: Stay updated with the latest advancements in machine learning technologies and AWS services, driving the adoption of cutting-edge solutions to maintain a competitive edge.

Minimum Requirements:

• Bachelor's degree in Computer Science, Computer Engineering, Machine Learning, Statistics, Physics, or a relevant technical field, or equivalent practical experience.
• At least 6+ years of experience in machine learning engineering, with demonstrated success in deploying scalable ML models in a production environment.

Ideal Skills & Experience:

• Deep expertise in one or more of the following areas: machine learning, recommendation systems, pattern recognition, data mining, artificial intelligence, or related technical fields.
• Proven track record of developing machine learning models from inception to business impact, demonstrating the ability to solve complex challenges with innovative solutions.
• Proficiency with Python is required, and experience with Golang is a plus.
• Demonstrated technical leadership in guiding teams, owning end-to-end projects, and setting the technical direction to achieve project goals efficiently.
• Experience working with relational databases, data warehouses, and using SQL to explore them.
• Strong familiarity with AWS cloud services, especially in deploying and managing machine learning solutions and scaling them in a cost-effective manner.
• Knowledgeable in Kubernetes, Docker, and CI/CD pipelines for efficient deployment and management of ML models.
• Comfortable with monitoring and observability tools tailored for machine learning models (e.g., Prometheus, Grafana, AWS CloudWatch) and experienced in developing recommender systems or enhancing user experiences through personalized recommendations.
• Solid foundation in data processing and pipeline frameworks (e.g., Apache Spark, Kafka) for handling real-time data streams.

About You:

• • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
  • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
  • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
  • You earn trust - you listen attentively, speak candidly, and treat others respectfully.

What Makes Working at Sezzle Awesome:

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators. We believe in surrounding ourselves with only the best and the brightest individuals. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-Remote

Company Overview: 

At Praetorian, we are bringing together the world's brightest minds in pursuit of solving the cybersecurity problem by reducing the friction of security and enabling the next wave of technological innovation. From projects that range from cryptocurrency exchanges to autonomous vehicles and from medical device platforms to space telescopes, we apply expertise and engineering to help secure our customers.

Explore our exciting New Hire Survival Guide to dive into Praetorian's mission, vision, values, and culture! Discover our competitive benefits and perks we offer.

Career Opportunity:

• Join an industry with massive socio, economic, and political importance in the 21st century
• Work alongside some of the best and the brightest minds in the security industry
• Work with prominent clients and help them solve hard security problems
• Leave an indelible mark on a company where individual input has real impact
• Align your career trajectory with a hyper-growth company that is on the move

Core Responsibilities:

• Provide technical execution on challenging offensive security projects for our customers
• Identify nuanced vulnerabilities in advanced systems
• Develop custom methodologies, payloads, exploits, and tools to ensure project success
• Develop documentation for novel mitigation strategies to emerging or undocumented security risks identified in client environments
• Develop comprehensive reports and presentations for our customers
• Serve as a mentor to other engineers in their technical and professional development
• Collaborate with the security community to develop novel attack techniques, tactics, and procedures (TTPs) through Praetorian’s Security Blog and other forms of community engagement

Desired Qualifications:

• Demonstrated passion for offensive security and adversarial engineering
• 2+ years of experience in one or more of the following offsec domains: software, hardware, network, or cloud penetration testing
• Familiarity with exploit development beyond Windows and for MacOS X or Linux environments
• Familiarity with command and control channel frameworks and deployment
• Familiarity with cloud technology and deployments (AWS, Azure, GCP)
• Familiarity with reverse engineering malware, data obfuscators, or ciphers
• Ability to write technical reports and present technical findings both internally and externally
• Experience with startup and/or high-tech companies

+1 Qualifications:

• Prior security consulting experience a major plus
• Software development experience in core offsec languages such as golang or python
• Capture-the-flag, CCDC, CPTC or other security related competitions
• Ranked achievements on testing platforms such as Hack the Box, Tryhackme, Portswigger and similar 
• Track record in vulnerability research, exploit development, and CVE assignments
• Demonstrated open source contribution with git commits to popular offsec projects
• Security community experience via presentations, conference attendance, blogs, white papers and similar 
• PNPT, BSCP, OSCP, OSWE, OSCE, OSEP, OSED, CRTO, cloud certifications and similar 
• Bachelors degree in computer science, computer engineering, mathematics, or physics

Desired Behaviors:

• Fanatical passion for cybersecurity and the challenges it presents
• Customer centric focus with an obsessive need to wow and delight each client
• Ability to maintain high levels of output and work ethic
• Personable individual who enjoys working in a team-oriented environment
• Self-starter and independent learner that is able to spin up quickly

Compensation & Benefits:

• Competitive salary
• Equity Incentive Plan, offering ownership stakes in the company
• Continuous learning opportunities through our internal Learning & Development (L&D) program, including training, certifications, and conferences to support your career growth
• Recognition and rewards for speaking engagements at industry events and conferences
• Comprehensive health and dental insurance coverage
• Immediate 401(k) matching
• Paid maternity and paternity leave

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.

We are committed to an inclusive and diverse Praetorian.  We are an equal opportunity employer.  We do not discriminate based on race, ethnicity, color, ancestry, national origin, religion, sex, sexual orientation, gender identity, disability, veteran status, genetic information, marital status, or any other legally protected status.

We believe in clarity and fairness from the start. For candidates based in California, Colorado, Washington, and New York, the estimated base salary range for this role is $120,000-$175,000. The final offer will be thoughtfully determined based on various factors, including your unique skills, experience, and location. At Praetorian, we recognize that great talent comes with diverse backgrounds—and we’re committed to ensuring each offer reflects the value you bring to our team.

Company Overview: 

At Praetorian, we are bringing together the world's brightest minds in pursuit of solving the cybersecurity problem by reducing the friction of security and enabling the next wave of technological innovation. From projects that range from cryptocurrency exchanges to autonomous vehicles and from medical device platforms to space telescopes, we apply expertise and engineering to help secure our customers.

Explore our exciting New Hire Survival Guide to dive into Praetorian's mission, vision, values, and culture! Discover our competitive benefits and perks we offer.

Career Opportunity:

• Join an industry with massive socio, economic, and political importance in the 21st century
• Work alongside some of the best and the brightest minds in the security industry
• Work with prominent clients and help them solve hard security problems
• Leave an indelible mark on a company where individual input has real impact
• Align your career trajectory with a hyper-growth company that is on the move

Core Responsibilities:

• Provide technical execution on challenging offensive security projects for our customers
• Identify nuanced vulnerabilities in advanced systems
• Develop custom methodologies, payloads, exploits, and tools to ensure project success
• Develop documentation for novel mitigation strategies to emerging or undocumented security risks identified in client environments
• Develop comprehensive reports and presentations for our customers
• Serve as a mentor to other engineers in their technical and professional development
• Collaborate with the security community to develop novel attack techniques, tactics, and procedures (TTPs) through Praetorian’s Security Blog and other forms of community engagement

Desired Qualifications:

• Demonstrated passion for offensive security and adversarial engineering
• 5+ years of experience in one or more of the following offsec domains: software, hardware, network, or cloud penetration testing
• Familiarity with exploit development beyond Windows and for MacOS X or Linux environments
• Familiarity with command and control channel frameworks and deployment
• Familiarity with cloud technology and deployments (AWS, Azure, GCP)
• Familiarity with reverse engineering malware, data obfuscators, or ciphers
• Ability to write technical reports and present technical findings both internally and externally
• Experience with startup and/or high-tech companies

+1 Qualifications:

• Prior security consulting experience a major plus
• Software development experience in core offsec languages such as golang or python
• Capture-the-flag, CCDC, CPTC or other security related competitions
• Ranked achievements on testing platforms such as Hack the Box, Tryhackme, Portswigger and similar 
• Track record in vulnerability research, exploit development, and CVE assignments
• Demonstrated open source contribution with git commits to popular offsec projects
• Security community experience via presentations, conference attendance, blogs, white papers and similar 
• PNPT, BSCP, OSCP, OSWE, OSCE, OSEP, OSED, CRTO, cloud certifications and similar 
• Bachelors degree in computer science, computer engineering, mathematics, or physics

Desired Behaviors:

• Fanatical passion for cybersecurity and the challenges it presents
• Customer centric focus with an obsessive need to wow and delight each client
• Ability to maintain high levels of output and work ethic
• Personable individual who enjoys working in a team-oriented environment
• Self-starter and independent learner that is able to spin up quickly

Compensation & Benefits:

• Competitive salary
• Equity Incentive Plan, offering ownership stakes in the company
• Continuous learning opportunities through our internal Learning & Development (L&D) program, including training, certifications, and conferences to support your career growth
• Recognition and rewards for speaking engagements at industry events and conferences
• Comprehensive health and dental insurance coverage
• Immediate 401(k) matching
• Paid maternity and paternity leave

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification document form upon hire.

We are committed to an inclusive and diverse Praetorian.  We are an equal opportunity employer.  We do not discriminate based on race, ethnicity, color, ancestry, national origin, religion, sex, sexual orientation, gender identity, disability, veteran status, genetic information, marital status, or any other legally protected status.

We believe in clarity and fairness from the start. For candidates based in California, Colorado, Washington, and New York, the estimated base salary range for this role is $135,000-$200,000. The final offer will be thoughtfully determined based on various factors, including your unique skills, experience, and location. At Praetorian, we recognize that great talent comes with diverse backgrounds—and we’re committed to ensuring each offer reflects the value you bring to our team.

The Flow Builder team is responsible for designing, developing, and supporting Postscript’s message orchestration platform. We are constantly improving on the current platform and adding new features that empower merchants to run their entire SMS business through Postscript. The Flow Builder product is experiencing fast growth and adoption leading to a number of new and exciting challenges to solve. We are looking for a motivated software engineer with an interest in building scalable and extensible products to join our growing team.  

As a Senior Backend Engineer on the Flow Builder team you will use your expertise and passion for building scalable and extensible distributed systems to help enhance our message orchestration platform, enabling our customers to engage their subscribers through conversational messaging. As a technical leader you will set the bar for the maintainability and performance of our systems. You will be given the autonomy to grow to your full potential and your work will directly impact our customers and Postscript’s bottom line.

Senior Backend Engineers at Postscript have a high impact on their team and on the wider engineering org through project leadership, technical expertise, and decision-making. As a Senior engineer you will guide your team in weighing technical constraints and business priorities to make the necessary trade-offs to deliver customer value. Our stack is currently React, Go, Python (Flask), within a mostly monolithic, AWS-managed architecture.

Your passion for building great products, especially in early-stage companies, will lead you to have a  significant impact on both our customers and business. In addition, you will have the opportunity to solve challenging problems and build out architecture and processes as we scale. 

This position is fully remote.

Primary duties

• Architect and build highly available, extensible, and scalable platform primitives and REST APIs for external and internal customers
• Take ownership and be creative with your solutions as you help deliver excellent products to our customers
• Contribute to the health of the team through honest and direct feedback as we iterate and improve on our processes
• Guide your team to make optimal technical and product design decisions
• Identify and execute on points of scale in order to maximize throughput and efficiency
• Mentor other engineers on best practices and growth opportunities
• Be accountable for communicating transparently and proactively, defining scope, breaking down and estimating tasks, risk and change management

Requirements

• A proven career as a software engineer developing backend applications and APIs, hands-on experience using Golang and Python. SaaS experience preferred
• Experience with or exposure to migration off a monolithic architecture a plus
• Familiarity with building, deploying, and maintaining applications on AWS services using Terraform
• Expertise in NoSQL and SQL, and experience with database modeling (Postgres)
• Experience building modular, flexible architectures (maximizing readability and extensibility)
• Excellent verbal and written communication skills
• Experience building great products (high growth, early stage tech preferred)
• Experience coaching and mentoring engineers

What We’ll Love About You

• Minimum 6-8 years professional software development experience
• Experience establishing best practices in development processes 
• Passion for early stage companies and the opportunity to be responsible for owning and improving a new, fast-growing code base
• Great communicator and love helping others 
• Experience establishing best practices in development processes 
• Empathy for users 
• Strong attention to detail
• Fearless in your pursuit of excellent results
• Remote work experience is a plus 

What You’ll Love About Us

• Salary range of USD $170,000-$200,000 base plus significant equity (we do not have geo based salaries)
• High growth startup - plenty of room for you to directly impact the company and grow your career!
• Work from home (or wherever)
• Fun - We’re passionate and enjoy what we do
• Competitive compensation and opportunity for equity
• Flexible paid time off
• Health, dental, vision insurance

For information about how we use your personal data, please see our U.S. Job Applicant Privacy Notice