Senior Backend Engineer — fintech & payments clients

Nilus Talent is a boutique sourcing agency. This is a pool posting: we're sourcing senior backend engineers for fintech and payments teams at client companies, and one application covers the family of roles we're actively filling — not a single seat.

The work: the foundational backend systems that move money — payment integrations and routing, ledgering, reconciliation, and banking flows. You'd design and build large-scale backend systems for money movement with strict correctness requirements, and own problems end to end — from technical architecture to production reliability to partner integrations. These are financial systems where doing things right matters more than moving fast, and your code will be used at scale.

What we look for: 5+ years of backend engineering experience in high-scale production environments; expertise in backend programming (Python, Go, Java, or Kotlin); familiarity with complex large-scale distributed systems; experience designing performant database models in PostgreSQL or other relational databases; working fluency with financial correctness — idempotency, reconciliation, failure-mode handling, auditability; and proven ownership of production reliability, including on-call. Experience in fintech, payments, or banking (ACH, card rails, ledgers) helps but isn't required — readiness is what we check.

Salary: $180,000–$243,000 a year. That's the band across the client teams we source for; where a given role lands in it depends on the client and your level.

The process has 4 steps. Apply below — it takes about 2 minutes, and there's no cover letter. We send you one link to a readiness check that adapts to what you already know. You choose whether to share your results with us. If you finish strong, we put you forward to hiring teams.

We're a sourcing agency, and we'd rather be plain about what that means: completing the readiness check places you in our submission pool. We don't guarantee interviews or placement. The preparation is free and yours to keep, whatever happens.