Junior Backend Engineer
Summary
Junior backend engineer at a UK fintech startup building an AI-powered autonomous savings app; writes Java/Spring services on AWS, works with Kafka/event sourcing, and contributes to APIs and ledger systems.
A UK fintech building an AI-powered autonomous savings product - an app that automatically manages customers' money across accounts to help them earn a better return. The company is pre-launch, well-funded by seed investors, and building core financial infrastructure from the ground up.
The company is hiring a graduate/junior backend engineer to work alongside the CTO on the systems that power the product, the money-movement engine, ledger and APIs. The successful candidate will start on well-scoped, supervised backend work and grow into more responsibility as they prove themselves. Hands-on, with real mentorship and real impact: code reaches customers quickly.
What you'll do
- Build and test backend services in Java/Spring on AWS.
- Work with event-driven systems (Kafka, event sourcing) while learning the architecture.
- Write clean, well-tested code and take feedback through code review.
- Contribute to APIs, data and integration work across the stack.
What they're looking for
- Solid Java fundamentals (from a CS degree or equivalent self-taught experience).
- Evidence of building things and teaching yourself fast - a side project, dissertation, hackathon or open-source work.
- Care for clean, correct code and a willingness to learn payments/fintech.
- UK-based, with the right to work in the UK.
Nice to have (not essential)
- Any exposure to Spring, AWS, SQL, Python, Flutter/Dart or event-driven systems.
- Interest in fintech, open banking or AI agents.