Senior Backend Engineer – Payments Infrastructure (C# / .NET 8)
Rec2Tech LtdUnited States
Posted January 9, 2026
Full Time
About the Company
Rec2Tech Ltd specializes in connecting fintech startups and scale‑ups with top‑tier IT talent through a data‑driven, multi‑layered assessment process that delivers a 96 % retention rate within the first year. The firm offers end‑to‑end recruitment solutions—including AI/ML, blockchain, DevOps, cybersecurity, and executive search—tailored to the unique needs of fintech, regtech, and digital banking organizations. By shortening the hiring cycle with scientifically validated methods, Rec2Tech reduces commercial downtime and the costly impact of bad hires, which can cost 3.5 × an employee’s annual salary. Its culture of precision, cultural alignment, and continuous improvement positions it as a trusted partner for companies seeking to build high‑performing tech teams quickly and sustainably.
Job Description
Our client is building the core rails that power how money moves across borders. They're hiring a senior backend engineer to own and evolve backend services that move real money safely and predictably, even when upstream banks, partners, or internal systems misbehave.
Requirements
- experience building payment or banking systems from the inside
- designing transaction workflows that handle failure as a first-class case
- building high-availability APIs consumed by external partners and internal systems
- owning services end-to-end: design → build → deploy → monitor → incident → resolution → follow-up improvements
- making real decisions with incomplete information
Benefits
- direct ownership of mission-critical payment services
- real engineering problems: distributed failure, transactional state, reconciliation, settlement, partner breakage, production safety
- an environment where judgment matters and strong engineers are trusted to run toward hard problems