Backend Developer (Poland)

Build and operate the backend systems powering BJAK’s AI Neobank app. You’ll design reliable APIs and workflows for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC, and risk flows, integrating with partners, payment providers, AI services, and third-party platforms. Own backend quality across reliability, security, latency, observability, data integrity, and incident handling, while collaborating with product, frontend, mobile, and AI teams to ship quickly and safely.