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Flix
Senior Kotlin Backend Engineer (m/f/d)Flix • Berlin, Berlin, Germany
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Flix

Senior Kotlin Backend Engineer (m/f/d)

Flix
  • DE
    Berlin, Berlin, Germany
  • DE
    Berlin, Berlin, Germany
Jetzt Bewerben

Über

Senior Kotlin Backend Engineer (m/f/d)

We’re looking for a talented Senior Kotlin Engineer (m/f/d) to join us in Berlin or Munich.

In the Foundation Division of FlixTech, our Finance Technology Stream helps the business grow efficiently by delivering smart, compliant, and automated finance solutions. We keep things simple for our internal users so they can spend less time on manual tasks and more time on what matters. The team you will join is not focused on user-facing experiences or polished UIs. Our success is measured by data correctness, consistency, and trustworthiness, even in complex and evolving business scenarios. You’ll be part of a self-managed, cross-functional team with a Product Owner and fellow Software Engineers, directly supporting new country launches, new business models, and the continuous evolution of Flix’s financial backbone.

This role is well-suited for someone who enjoys ownership, working close to real business problems, and contributing to the long-term foundations of an international company. If you value collaboration, thoughtful engineering, and building systems that need to be right, not just fast, we’d love to meet you.

About the Role
  • Design, develop, and maintain backend services using Kotlin
  • Build and evolve scalable, event-driven systems that process, validate, and expose financial data
  • Own features end-to-end: from technical design and implementation to testing, deployment, monitoring, and ongoing maintenance
  • Collaborate closely with the Product Owner and Finance stakeholders to translate business requirements into robust technical solutions
  • Ensure data accuracy, traceability, and auditability across financial and accounting flows
  • Improve system reliability, observability, and performance for business-critical processes
  • Contribute to clean code, architectural discussions, and continuous improvement of engineering practices
About You
  • 5 years of experience as a Software Engineer working with Kotlin
  • Hands-on experience building backend services using the Spring ecosystem (e.g. Spring Boot, Spring Data)
  • Experience with event-driven design (e.g. asynchronous processing, messaging, domain events)
  • Practical experience with cloud platforms (preferably AWS, or similar)
  • Solid understanding of databases, both NoSQL (e.g. DynamoDB) and/or relational systems
  • Comfortable working in complex, data-heavy domains (ideally Finance), where investigation, analysis, and precision are key
  • Communicate clearly in English, open-minded, curious, and motivated to continuously improve both yourself and the systems you work on

We recognize that everyone carries a unique set of valuable skills and experiences. If you think you could have an impact even though you don't meet 100% of the requirements, we still encourage you to apply. We want to hear from you!

What We Offer
  • Travel perks: 12 free Flix vouchers + 12 discount vouchers for friends & family.
  • Work from (M)Anywhere: Depending on your role, work from another location for up to 60 days per year.
  • Hybrid work model: We are an office-first company, but we offer flexibility to balance work and life.
  • Wellbeing support: Access confidential 1:1 counselling, courses, and stress management for yourself and up to four family members.
  • Learning & Development: Take advantage of language classes, training courses, and expert-led sessions to grow your skills.
  • Mentoring Program: Connect with experienced colleagues to gain insights and accelerate your career.

To view more local benefits specific to each office location, please check out this link: Locations - Flix Career

Why Join Flix?

At Flix, you’ll find teams that rally together to overcome challenges and spark creativity. We believe in ownership culture - giving you the freedom to take initiative, make an impact, and shape your own career path.

As we continue to expand across the globe, you can make a real difference in how we work.

If you’re ready to grow and lead your journey, Flix is the place for you!

  • Berlin, Berlin, Germany

Sprachkenntnisse

  • English
Hinweis für Nutzer

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