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Backend DeveloperBJAK · United Kingdom
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BJAK

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Backend Developer

🗓️ Posted 2026-09-21 United Kingdom Fulltime Hybrid ICT
💰 Salary Not shared 📊 Market 3,333 GBP–6,667 GBP/mo

About the Company

We are focused on reinventing how people spend, save, invest, exchange, travel, and more. Our objective is to build tools that will help people get more from their money and and become an expert at ease. We believe AI will help make finance smart, assessible and safe. We have teams working around the world, with over 20 nationalities and growing from our offices and remotely. In 2019, we built the first mobile-first, insurance platform, enabling insurance to be accessible online by millions in the region. Today, it's the leading insurance platform in Southeast Asia.

About the Role

We are looking for backend engineers to build the core systems behind BJAK's AI Neobank app. This role is for engineers who can build reliable APIs, workflows and financial product infrastructure that can scale across markets, partners and millions of users.

Responsibilities

  • ● Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC and risk flows.
  • ● Design reliable systems that can 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.

Requirements

  • ● Strong backend engineering experience in production systems.
  • ● Good understanding of APIs, databases, authentication, authorization, queues, jobs, events and integrations.
  • ● 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.
  • ● Fintech, payments, banking, wallet, KYC, fraud or risk experience is a strong plus, but not required if fundamentals are strong.

Nice to Have

  • ● Fintech, payments, banking, wallet, KYC, fraud or risk experience

Application Notes

Join us and build a better future for our society. Our process is designed to move fast: online assessment or practical task, technical interview, CEO / final round. For strong candidates, we aim to complete the process and make an offer within 1 week from the start of the interview process. Candidates who complete assessments quickly will be prioritized. English is our main working language across global teams. Strong English communication is required.