Backend Developer

The role

Backend engineers will build core systems for the BJAK AI Neobank app. This includes building backend services, APIs, and financial product infrastructure that scales across markets and millions of users.

What you will do

• 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, 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 qualifications

• 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.
• Must be based in United States.
• Strong English communication is required.

Nice to have

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

Before you apply

• Applicants should already be based in United States.
• Online assessment or practical task
• Technical interview
• CEO / final round

About the company

DOIT focuses on reinventing how people spend, save, invest, exchange, and travel. They built the leading insurance platform in Southeast Asia.