Backend Developer (Portugal)

Responsibilities

• ▹Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC and risk flows
• ▹Design reliable systems that support real customer transactions and operational workflows
• ▹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

Requirements

• ▹Strong backend engineering experience in production systems
• ▹Good understanding of APIs, databases, authentication, authorization, queues, jobs and events
• ▹Experience building services used by real customers or internal operations at meaningful scale
• ▹Strong debugging, reliability, security and data quality mindset
• ▹Able to make practical trade-offs between speed, correctness, scalability and maintainability

Nice to have

• ▹Fintech, payments, banking, wallet, KYC, fraud or risk experience (not required if fundamentals are strong)

Soft skills

About the company

BJAK started in 2019 as the first mobile-first insurance platform and is now the leading insurance platform in Southeast Asia. The company is now expanding into an AI-powered neobank app covering saving, investing, exchanging and travelling, with a team of over 20 nationalities working worldwide.