Backend Developer (Spain)
BJAK
Spain
Workplace: RemoteFull timeFunction: Software EngineeringSkills: ["Reliability","Security mindset","Debugging","Data quality","Trade-off decision making"]Build core backend systems behind an AI neobank app, creating reliable APIs and workflows for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC, and risk. Design scalable, production-ready services and ensure backend quality across reliability, security, latency, observability, data integrity, and incident handling. Integrate with internal systems, partners, payment providers, AI services, and third-party platforms while partnering with product, frontend, mobile, and AI teams to ship safely.

