Backend Software Engineer at Bjak
Berlin, Berlin, Germany -
Full Time


Start Date

Immediate

Expiry Date

23 Nov, 26

Salary

0.0

Posted On

25 Aug, 26

Experience

0 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Yes

Skills

Industry

Information Technology & Services

Description

The Role

We are looking for backend engineers to build the core systems behind BJAK's AI Finance Agent.


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.
  • 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.
Responsibilities
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