Senior Backend Engineer

Back-End Engineer

We're looking for an experienced Back-End Engineer to help design, build, and scale the core services that power Umba's digital banking platform. You'll work on RESTful APIs built with Python, leveraging frameworks like Flask and FastAPI to deliver secure, reliable, and high-performance systems used by tens of thousands of customers across Africa.

You'll collaborate closely with our Front-End and Data teams to define new data models, business logic, and APIs — shaping the foundation for our mobile and web applications. We value autonomy and ownership: engineers at Umba ship their own code, monitor performance, and continuously improve reliability.

This is a highly technical, in-office role based at our Nairobi headquarters. You'll join a small, exceptional team operating in a fast-moving environment, where we deploy new machine learning models regularly and rely on data-driven decisions. You won't just be an implementer — you'll help define how we build the future of banking.

Design, build, and maintain robust and scalable software using Python (Flask, FastAPI).

Architect new services and contribute to the evolution of our system infrastructure.

Write clean, testable code with strong attention to performance and security.

Improve code quality through automation, testing, and code reviews.

Collaborate with Front-End and Data teams to integrate APIs into customer-facing apps.

Participate in technical discussions and product brainstorming sessions.

Debug complex issues and deliver reliable solutions on schedule.

6+ years of hands-on software engineering experience in production environments.

Degree in Computer Science, Engineering, or related field preferred — or equivalent, demonstrable experience.

Strong proficiency in Python and familiarity with frameworks such as Flask and FastAPI.

Experience with Linux/Unix systems and scripting languages.

Solid understanding of OOP and software architecture principles — building systems that are extensible, reusable, and maintainable.

Familiarity with modern development tools and workflows (Git, CI/CD, Docker).

Bonus: experience in blockchain or crypto-related development, particularly in financial applications.

Bonus: experience with Front end development (TypeScript/React/NextJS)

Proven track record of shipping production-ready code on time.

Collaborative, curious, and fun to work with — the kind of teammate others want to join on the weekend.

Valid work authorization for Kenya.

Umba is proud to be an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected veteran status, age, or any other characteristic protected by law. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. If you have a disability or special need that requires accommodation, please let us know.