Senior Backend Engineer — Payments & Reconciliation (Hybrid UK)

Aviy is seeking a senior backend engineer to own payments infrastructure in London. You will design and deliver payment integrations across providers, and own the systems that prove every transaction is accounted for.

With 8+ years in backend engineering and a strong payments background, you will champion idempotency, retries, and clear discrepancy communication with finance. This role combines autonomy with leadership in a hybrid, London-based team.

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