Backend Developer
Core
Build core backend systems, APIs, and financial product infrastructure for BJAK's AI Neobank app to support millions of users across Southeast Asia.
Role type
Senior Backend Engineer (Fintech/Neobank)
Builds
Scalable backend services for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC, and risk flows.
Domain
Fintech, Neobanking, Digital Payments
Deliverable
production ML models | product features
Required skills
Backend engineering in production systems, API design, database management, authentication/authorization, message queues, event-driven architecture, system integration, debugging, reliability engineering, security, data quality, scalability trade-offs
Preferred skills
Fintech, payments, banking, wallet, KYC, fraud, or risk experience
Technologies
None explicitly listed
Responsibilities
Build backend services and APIs for core financial flows; Design reliable systems for real customer transactions; Integrate with internal systems, financial partners, and third-party platforms; Own backend quality (reliability, security, latency, observability); Collaborate with product, frontend, mobile, and AI teams; Improve existing systems by automating processes
Seniority
Senior, hands-on IC