Backend Engineer (Java/Kotlin)

Reposted Yesterday
Be an Early Applicant
Valencia, Comunidad Valenciana, ESP
In-Office
Senior level
Fintech • Software • Financial Services
The Role
Lead and deliver complex backend features end-to-end, own core domain areas, mentor developers, improve processes and code quality, and collaborate with Product, QA, and DevOps to build reliable, scalable systems.
Summary Generated by Built In

Welcome to DKB Code Factory…. 

{ { … a_place_to_stay_yourself:

} } ; 

{ { … a_place_to_stay_curious:

Join DKB Code Factory as a Backend Engineer and take on a pivotal role driving the technical excellence and delivery of core backend services. This hybrid position in Valencia offers the chance to grow your leadership skills, own key system domains, and mentor peers within a collaborative, high-impact team.

} } ; 

{ your_responsibilities: [
  • Deliver complex backend features end-to-end with minimal supervision, ensuring high quality and timely completion.
  • Mentor and support other developers through code reviews, pairing, and knowledge sharing to boost team capability.
  • Take ownership of core functions or domain areas within the team and expand influence across multiple teams.
  • Lead efforts to improve team processes, including code quality, testing, and documentation standards.
  • Collaborate closely with Product Owners, QA, DevOps, and fellow engineers to deliver reliable, scalable solutions.
  • Serve as a technical expert and informal leader, fostering continuous improvement and technical excellence.

] } ;

{ following_qualifications_would_be_in_line_with_our_desired_profile_for_this_position: [

  • Strong proficiency in the Java/JVM ecosystem.
  • Clear motivation to learn and adopt Kotlin as a primary language, with motivation to grow into it quickly.
  • Proven ability to design and implement complex backend solutions simply and effectively.
  • Solid understanding of performance, security, and maintainability best practices.
  • Experience across full software development lifecycle and CI/CD workflows.
  • Excellent communication skills and a collaborative mindset.
  • Demonstrated willingness to mentor and support team members.
  • Curiosity and commitment to continuous learning and pragmatic problem-solving.
  • Familiarity with Postgres, Kafka, REST APIs, and monitoring tools like Grafana and Prometheus is a plus.
] } ;

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!

{ { … a_place_to_stay_together:

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... 

} } ;

Skills Required

  • Strong proficiency in Kotlin
  • Proven ability to design and implement complex backend solutions
  • Solid understanding of performance, security, and maintainability best practices
  • Experience across full software development lifecycle and CI/CD workflows
  • Excellent communication skills and a collaborative mindset
  • Demonstrated willingness to mentor and support team members
  • Curiosity and commitment to continuous learning and pragmatic problem-solving
  • Familiarity with Postgres
  • Familiarity with Kafka
  • Familiarity with REST APIs
  • Familiarity with Grafana
  • Familiarity with Prometheus
Am I A Good Fit?
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The Company
Berlin
153 Employees
Year Founded: 2018

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

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