Welcome at DKB Code Factory….
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Join our engineering team as a Senior Backend Engineer (x,f,m) and play a key role in designing and operating the core backend systems that power secure, scalable, and high-performance digital platforms in a highly regulated environment. You will take ownership of mission-critical backend services, drive technical excellence, and contribute to reliable, customer-centric solutions impacting thousands to millions of users. This role offers the opportunity to deepen your expertise, shape architecture decisions, mentor peers, and influence engineering standards within a collaborative, quality-driven organization.
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{ your_responsibilities: [- Design, build, and operate scalable, secure, and maintainable backend services with clean architecture and well-defined APIs.
- Deliver functional, well-tested code adhering to Clean Code principles, Test Driven Development, and Domain-Driven Design.
- Collaborate closely with frontend developers, product owners, QA, UX designer and other stakeholders to align API specifications and implementations.
- Proactively identify and reduce technical debt while implementing user-driven improvements.
- Lead and participate in technical deep dives and knowledge sharing to elevate engineering best practices.
- Mentor peers and contribute to cross-team problem solving and innovation.
{ following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [
- Proven experience in backend development using Kotlin and Spring Boot framework.
- Strong understanding of Domain Driven Design, Ports & Adapters (Hexagonal Architecture), and API design/validation.
- Experience with relational databases such as Postgres.
- Experience with container orchestration tools including Docker, Kubernetes and Helm.
- Prioritizing code quality and engineering excellence: You believe in the power of automated test suites and ideally embrace TDD as a core part of your development workflow to build scalable and bug-free solutions.
- Excellent communication and collaboration skills to work effectively across teams and stakeholders.
- Ability to take ownership, deliver under uncertainty, and maintain attention to detail.
- Bonus: You have a Startup and/or Finance background.
- You're passionate about your work, but also know how to enjoy your free time!
Got the feeling not to match every single requirement? Don’t worry! We encourage you to apply anyways, even if your qualifications do not align perfectly. You might still be just the right candidate for us!
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From Morning Daily to Afterwork Drink, team spirit is essential to us. The heart of our togetherness is that we truly are connected with each other: We not only share fun & laughter, but also honest opinions - because that's how we grow: We exchange ideas, give support in our personal development, and celebrate success together! Besides our great community, we also offer numerous other benefits...
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Skills Required
- Proven experience in backend development using Kotlin and Spring Boot framework
- Strong understanding of Domain Driven Design, Ports & Adapters (Hexagonal Architecture), and API design/validation
- Experience with relational databases such as Postgres
- Experience with container orchestration tools including Docker, Kubernetes and Helm
- Excellent communication and collaboration skills
- Ability to take ownership and deliver under uncertainty
What We Do
At Code Factory we believe that every big journey starts with a first step. Our destination: creating tomorrow's banking. Four million customers have already placed their faith in us. Their wind farms and schools depend on our code. We are forging the future of finance - today. As a subsidiary of DKB, we benefit from the financial backing and entrepreneurial expertise of an established company but enjoy the flexibility and agility of a startup. By encouraging unconventional ideas and working hand-in-hand with other fintech companies in the heart of Berlin, we are reshaping modern finance. Join us
