Senior Software Engineer with Accounting Experience

The salary range for this role is $5,000 - $9,500 per month (Gross in USD)

Hiring Manager: Matthew Sedlacek

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 Senior Software Engineer with accounting and financial experience. This role offers an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for leadership and innovation.

This position is ideal for professionals who began their careers in accounting or finance and later transitioned into software engineering — individuals who now want to leverage that domain expertise to architect and scale technical solutions that solve complex financial challenges in fintech.

As a Senior Software Engineer, you will design, develop, and optimize high-impact systems that power Sezzle's financial reporting, reconciliation, and automation workflows. You'll partner closely with cross-functional teams — including Accounting and Finance — to ensure data integrity, streamline financial processes, and build robust, auditable systems that meet enterprise-grade standards.

Your role will extend beyond development. You'll mentor engineers, shape technical direction, and bring a strong sense of ownership to every project you lead. You should be able to build high-quality, innovative, and fully performing software in compliance with coding standards, technical design, and regulatory best practices.

What You'll Do:

• Collaborate with cross-functional teams to enhance and maintain software solutions for financial processes.
• Participate fully in the software development lifecycle, from design through deployment.
• Build new features and products as part of an integrated engineering team.
• Leverage accounting background to identify gaps and improve automation and reconciliation workflows.
• Evaluate and deploy software tools, processes, and metrics.
• Provide support and consulting on software systems usage.
• Ensure compliance with project plans and industry standards.
• Design software applications and features in Golang
• Build reports and automations using Python and SQL.
• 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, testable features that meet reporting and compliance standards.
• Mentor other engineering teammates to help elevate their experience and knowledge

What We Look For:

• 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.
• BS in Accounting, Computer Science or similar degree, or equivalent work experience.

Preferred Knowledge and Skills:

• Prior experience as an accountant or financial analyst.
• Solid understanding of financial operations such as reconciliation, reporting, and compliance.
• Experience in banking or financial institutions is a plus
• Proficient in multiple programming languages (e.g., Python, Java, Go) and experience with database systems like MySQL or PostgreSQL.
• Familiarity with software engineering tools, software development methodology, and release processes.
• Comfortable using observability platforms like Prometheus, or vendor solutions like NewRelic or Datadog to instrument your code for production monitoring and alerting.
• Familiarity with containerized micro-service architecture deployed with Kubernetes on AWS
• Demonstrated history of delivering commercial APIs and web applications

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.

Equal Employment Opportunity: Sezzle Inc. is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, color, religion, sex, national origin, age, disability, genetic information, pregnancy, or any other legally protected status. Sezzle recognizes and values the importance of diversity and inclusion in enriching the employment experience of its employees and in supporting our mission.

Compensation:

For this senior development role, with 8+ years of experience, the compensation range is $5,000 - $9,500 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.