Hilbi's core runs the money — payments, wallets, vouchers, affiliate, fee splitting and multi-level commission. There is no "roughly correct" here: every transaction has to reconcile. You're the human judgment between AI-generated code and production.
Research & DevelopmentOpen
Backend Engineer — Core & Transactions
"Money that has to be exactly right — with AI in the loop."
Why this role matters
What you'll work on
- Payments and wallets: balances, top-ups, payouts, refunds
- Fee splitting and multi-level commission logic
- Vouchers and affiliate flows
- Idempotent, reconcilable transactions with an audit event on every money movement
- Clean API contracts; reviewing AI-generated merge requests
Skills needed
- Solid backend + microservices, ideally with payments / ledger / marketplace experience
- You think in contracts, invariants and tests
- You design for idempotency, retries and reconciliation by default
- You spot the gap between "looks right" and "is right" in AI-generated code
Valuable extras
Event-driven patterns (Kafka)PSP integrationsFHIR
What we evaluate
- Correctness and idempotency of money logic
- Contract discipline
- Quality of your review of AI-generated code
- Audit and reconciliation thinking
The assignment
Commission split + AI MR review
Full brief is shared after a short intro call.