Backend Software Engineer - AI Neobank App (UK)
BJAKJobsCloseBy Editorial Insights
BJAK is seeking Backend Software Engineers to build the core systems behind its AI Neobank app in the UK, delivering APIs, workflows and financial product infrastructure that scale across markets and millions of users. You’ll own backend services across insurance, payments, wallet, savings and more, designing reliable accounts, transactions, partner integrations and operational tooling with a strong emphasis on security, observability and data quality. The ideal candidate has 3+ years of backend experience, solid API and database fundamentals, and a track record of integrating third party systems while managing production risk in regulated environments. The role is hybrid in the UK, with at least 3 days in the office; interviews move quickly from online assessment to technical interview to CEO final, with offers often within a week. Tips: highlight fintech or regulated experience, concrete ownership of production systems, real world edge cases and trade-offs, and clear examples of collaboration with product, mobile and operations teams.
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 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.
What You'll Own
Build backend services, APIs and workflows for the AI Neobank app.
Support products across insurance, payments, wallet, savings, investing, travel and financial services.
Design reliable systems for user accounts, transactions, partner integrations, reconciliation, notifications and operations.
Work with product and mobile teams to ship customer-facing journeys quickly.
Integrate with banks, payment gateways, insurers, data providers and other partners.
Improve system reliability, observability, security and performance.
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Build systems that are practical, auditable and ready for regulated financial products.
What We're Looking For
3+ years of backend engineering experience.
Strong fundamentals in APIs, databases, system design and production debugging.
Experience building scalable services and integrating third-party systems.
Good understanding of security, reliability, data quality and operational edge cases.
Able to make practical trade-offs between speed, quality and risk.
Comfortable working with product, mobile, operations and business teams.
Experience in fintech, payments, insurance, lending, banking or regulated products is a strong advantage.
The Kind of Builder We Want
Builds systems that work in the real world, not just on diagrams.
Thinks through edge cases, failure modes and operational impact.
Can move fast without creating fragile foundations.
Takes ownership of production issues and long-term reliability.
Explains clearly what they personally built versus what the team delivered.
This Role Is Not For
Engineers who only want isolated backend tasks.
People who ignore security, data consistency, monitoring or operational risk.
Developers who cannot work with fast-changing product requirements.
Candidates who talk about scale but have not handled production systems.
People who exaggerate impact without being clear on ownership.
Location
This role is based in UK. This is a hybrid role. You are expected to work from our UK 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.