Sr. Software Engineer - Core Team

Opp Fi is a leading tech-enabled digital finance platform that works with banks to provide financial products and services for everyday Americans. Through a transparent and responsible platform, which includes financial inclusion and excellent customer experience, the Company supports consumers who are turned away by mainstream options to build better financial health.

We are a team of caring, innovative, and inclusive individuals who thrive in being immersed in diverse talents, expertise, perspectives, and backgrounds. Our employees approach every new challenge with an unparalleled ability to see what could be rather than settle for what is. Our business principles guide us and create an open and collaborative culture where we improve 1% every day, and the best ideas always win!

We welcome individuals who want to make an impact in the financial system by facilitating credit access, expanding financial inclusion, promoting financial health, and delivering exceptional customer service.

A few other fun facts about us. Opp Fi is one of the top consumer-rated financial platforms online, maintaining a 4.5/5.0-star rating on Trustpilot. We are a 2025 Crain’s Fast 50™ company and were named on Built In's 2025 Best Places to Work in Chicago.

As a Senior Software Engineer on the Core Team, you will contribute to the development of Opp Fi’s software ecosystem that makes up our product portfolio. Specifically, this role’s function is to develop, maintain, and improve core libraries and documentation used by all of the Application Development teams. Knowing this, you will…

• Develop software using the latest Java, Spring Boot, Docker, Amazon Web Services, Postgre
  
  SQL, Event
  
  Store
  
  DB, Github, ArgoCD and more as the org continues to expand and improve.
• Enhance core libraries to implement cross-cutting concerns such as security, observability, data encryption, horizontal scaling, resiliency and other non-functional requirements
• Debug non-trivial issues requiring partnering with Application Developers, vendors and platform teams
• Collaborate with business and technology professionals across the company in an Agile fashion to ensure technical systems meet requirements.
• Perform code reviews, unit and integration testing; write high quality documentation, and implement other industry recognized best practices.
• Continue to learn new tools and patterns. We take development seriously! Our team develops and manages its own internal training courses, budgets for externally held classes and conferences, and covers books and other training related materials….we want you to grow your skills with us!
• Mentor junior engineers and new hires.

• A relevant undergraduate and/or graduate degree (e.g. Computer Science, Software Engineering, etc) or at least 5 years of professional software development experience.
• At least 5 years of experience with industry recognized automated testing standards (e.g. unit and integration testing) and methodologies (e.g. test or behavior driven development)
• At least 5 years of experience developing and maintaining internal APIs, and integrating with external APIs.
• At least 3 years of experience with Amazon Web Services.
• At least 1 years of experience maintaining internal libraries used by multiple teams
• Experience leading small to medium sized projects (e.g. Creating a new micro-service, major project refactoring, etc)
• Strong Experience with Java, Spring Boot, Docker, CI, Github
• Excellent written and verbal communication skills

• Familiarity with technologies existing in Opp Fi’s stack (, Docker, Amazon Web Services, Postgre
  
  SQL, Kubernetes, Github)
• Familiarity with methodologies existing within Opp Fi (Agile Development, Test Driven Development, Domain Driven Design, Event Sourcing)

Reports to:

Sr.Manager, Engineering

Job Level: Sr. Tech I

At Opp Fi, we are committed to fostering a fair and equitable workplace. The compensation range for this role reflects our good faith compensation estimate for this position. Final offers are determined based on a myriad of factors including, but not limited to experience, skills, qualifications, and other relevant business…