Software Engineer

THE OPPORTUNITY:

• Building card issuing from scratch, going direct on Faster Payments, enabling cross-border payments, and building term deposit accounts.
• 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.

WHAT SUCCESS LOOKS LIKE:

• Redesigning the transaction reconciliation service to handle 10x throughput before we hit FPS volume limits.
• Fixing the root cause of webhook delivery failures so we stop getting paged at 3am.
• Building a Bazel rule that cuts build times in half for the whole team, or writing an RFC that becomes the pattern for all event-driven services.

WHAT YOU'LL OWN:

• 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.