Software Engineer I (Remote) in Suffolk

We’re a fully regulated UK bank that powers the accounts and payments offerings of product-led fintechs and platforms like Uber, Yonder, Prosper, and Sidekick. We’ve grown rapidly since our launch in 2024, and today provide the banking backbone behind products in remittance, payroll, wealth, insurance, proptech, payments, neobanking and more. We've been remote-first since we were established in 2017 and we remain so today. Work here is asynchronous and fully flexible - because we want to be a part of your life in a way that helps you to get the most out of both your work and home life. Our strong culture has helped us to remain a mission-driven company as we have scaled, and gives our people a clear, explicit operating framework and the space to focus on delivering real value for our customers. When we start work, we explore multiple solutions before picking one. Once we commit to building something, we care about maintainability more than cleverness, observability more than hoping it works, and scalability more than premature optimisation. We ship quality code over hitting arbitrary deadlines. Once something goes live, we refactor the rough edges rather than polish what's already working Right now, we're building card issuing from scratch, going direct on Faster Payments, enabling cross-border payments, and building term deposit accounts. Day to day, this means: writing the reconciliation systems that process millions of FPS transactions, implementing double-entry accounting that tracks card spending and settlements, designing webhook infrastructure with message signing and replay protection, building API versioning that lets us evolve without breaking customers, or creating payment approval workflows that satisfy both user experience and compliance requirements. Success here is about impact beyond your own code: improving how we work, making other engineers more productive, and building systems that our customers (other developers) actually want to use. redesigning the transaction reconciliation service to handle 10x throughput before we hit FPS volume limits building a Bazel rule that cuts build times in half for the whole team writing an RFC that becomes the pattern we use for all event-driven services pairing with another engineer to help them reason through FoundationDB transaction semantics owning card issuing from initial RFC through to processing the first live transaction - making every architecture and implementation decision along the way. The technical decisions on your projects - you'll write the RFCs, choose the architecture, and decide when to extend existing systems versus rebuild them Delivery from customer problem to live feature - you'll work with PMs to shape what gets built, then own getting it into production Setting technical direction - your code reviews, implementation patterns, and architectural choices influence how the wider team builds software Production responsibility - the systems you build are yours to monitor, debug, and improve when issues arise Functional programming - you've shipped production Clojure, Elixir, Erlang, Haskell, Scala, or Scheme in a professional setting, or you've built substantial personal projects that demonstrate deep functional programming experience Fintech domain expertise - you've worked in payments, accounts, ledgers, or compliance where you've dealt with money movement, reconciliation, and regulatory requirements Strong software fundamentals and distributed systems knowledge - you understand consistency models, idempotency, and the failure modes that actually matter in production Comfort with startup pace and ambiguity - priorities shift, requirements evolve, and you adapt without needing perfect clarity upfront We are an early stage startup and we're working hard to expand our benefits package. Remote-first flexibility: Time off: 25 days’ holiday, bank holidays and a winter break (we shut down between Christmas and New Year) Own a part of what we’re building together Pension: Private medical with Bupa (including family cover) and life insurance with AIG Family leave: Enhanced parental leave with up to 6 months on full pay after two years’ service AI tools: We’ll support you in creating a comfortable and effective WFH environment. This would include verification of right to work, criminal record, credit history, social media and professional reference checks. Step 1: An initial phone call with our Talent Team for us to tell you more about Griffin and learn about your recent experience. Apply via the link below, if there's a match our Talent team will reach out to schedule an initial conversation and talk you through what happens next. We’re remote-first We hire across the UK and most of our team works remotely full-time. We have a small London office in Moorgate for those who want it, and about a third of the company is close enough to use it occasionally, but there's no expectation to be there. Griffin Bank Ltd request that recruitment agencies do not speculatively submit CVs to any employee or associate of our company unless explicitly asked to do so by a member of our Talent team.