Backend Developer - AI Neobank App

About the role

BJAK, the leading insurance platform in Southeast Asia, is hiring backend engineers to build the core systems behind its AI Neobank app. The role covers reliable APIs, workflows and financial product infrastructure that can scale across markets, partners and millions of users. It is based in Taiwan and is hybrid, with at least three days per week in the office; English is the main working language.

Key responsibilities

• Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC and risk flows.
• Design systems that support real customer transactions, operational workflows and future financial products.
• Integrate with internal systems, financial partners, payment providers, AI services and third-party platforms.
• Own backend quality across reliability, security, latency, observability, data integrity and incident handling.
• Work with product, frontend, mobile and AI teams to launch features quickly and safely.
• Improve existing systems by simplifying flows, removing manual work and automating repeatable processes.

Required profile

• Strong backend engineering experience in production systems.
• Experience building services used by real customers or internal operations at meaningful scale.
• A practical approach to trade-offs between speed, correctness, scalability and maintainability.
• Ability to handle fast-changing product requirements and to own your work clearly.
• Fintech, payments, banking, wallet, KYC, fraud or risk experience is a strong plus.

Required skills

• Good understanding of APIs, databases, authentication, authorization, queues, jobs, events and integrations.
• Strong debugging, reliability, security and data quality mindset.
• Strong English communication.

The interview process is fast: online assessment or practical task, technical interview, then CEO/final round, with offers aimed within a week of starting interviews.