Full Stack Software Engineer - AI Neobank App (Japan)

About BJAK

The original mission of BJAK is we believe people deserve smarter ways to plan, save and grow their money. This is the origin of our name.

Started in 2019, we built the first mobile-first, insurance platform, enabling insurance to be accessible online by millions in the region. Today, its the leading insurance platform in Southeast Asia.

Today, we are expanding ways to help people in the region — this includes spending, saving, investing, exchanging, travelling, and more. Our mission is help people get more from their money every day.

We have teams working around the world, with over 20 nationalities from our offices and remotely, who truly enjoys their work. We are looking for the most talented and driven people we can find. We are looking for people who work for their passion, not counting hours. Who loves building great next-generation products, not status quo. Who cares about redefining how everyone around us can get the best financial applications, not for an exclusive few.

If you're this person, we'd love to talk to you.

The Role

We are looking for full stack engineers to build fast across BJAK's AI Neobank app.

This role is for product-minded engineers who can move across frontend, backend, internal tools and customer journeys to turn ideas into working products quickly.

What You'll Own

• Build customer-facing and internal product features end to end.

• Develop web flows, backend APIs, admin tools, dashboards and operational systems.

• Support products across insurance, payments, savings, investing, travel and financial services.

• Work with product, design, mobile and operations teams to launch fast.

• Integrate APIs, handle data flows and improve production reliability.

• Use analytics, feedback and production issues to improve features after launch.

• Help build tools that reduce manual work and improve speed across the business.

What We're Looking For

• 3+ years of full stack software engineering experience.

• Strong frontend and backend fundamentals.

• Experience with modern web frameworks, APIs, databases and production systems.

• Able to build useful products quickly without needing perfect specs.

• Good product sense, UX awareness and attention to detail.

• Comfortable debugging across the stack.

• Experience in fintech, insurtech, marketplace, consumer apps or high-volume platforms is a strong advantage.

The Kind of Builder We Want

• Can turn rough requirements into working product.

• Thinks about user flow, backend logic and business process together.

• Moves fast while keeping systems maintainable.

• Takes ownership from build to launch to post-launch fixes.

• Clear about what they personally built and what was team-owned.

This Role Is Not For

• Engineers who only want to work on one narrow layer.

• People who need complete specs before starting.

• Developers who ship UI without understanding backend or operations impact.

• Candidates who avoid production support.

• People who make vague claims without showing real shipped work.

Location

This role is based in Japan. This is a hybrid role. You are expected to work from our Japan office at least 3 days per week.

Language

English is our main working language across global teams. Strong English communication is required.

Interview Process

Our process is designed to move fast:

1. Online assessment or practical task

2. Technical interview

3. 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.