Jobs in Germany
At Flix, we offer a tech-driven environment where innovation meets real-world impact, with competitive pay, strong growth opportunities, and a culture of collaboration and ownership.
B2B Sales & Distribution team in Demand Division builds and operates the backend platform powering Flix's partner-facing ecosystem — including a self-management platform for partners, a back office portal for internal users, and an AI agentic bot supporting partner operations. As a Senior Kotlin Backend Engineer (m/f/d), you can make an impact by supporting a significant modernization of backend architecture and working in an AI-native development environment.
About the Role
- Design and develop backend services in Kotlin and Spring Boot
- Build and maintain REST APIs used by internal and external partners
- Participate in architectural decisions and technical modernization initiatives
- Improve observability, performance, and reliability of backend systems using DataDog
- Contribute to CI/CD pipelines and cloud infrastructure on AWS and Kubernetes
- Work in and contribute to an AI-native development environment — including AI-integrated code review automation and an internal Claude Code plugin marketplace covering engineering standards: Kotlin/Spring Boot conventions, architectural patterns, testing practices, database guidelines, and team-specific conventions.
About You
- 5+ years of professional backend development experience with JVM languages with at least 2 years of commercial experience with Kotlin
- Hands-on experience with Spring Boot
- Experience building and maintaining REST APIs and distributed systems
- Solid SQL knowledge and relational database design, including MySQL and PostgreSQL
- Sound software engineering fundamentals, clean code practices, and familiarity with ORM and persistence layers
- Collaborative and pragmatic, comfortable working in cross-functional Agile teams
- Preferred: AWS, Kubernetes, GitLab CI/CD, Kafka, Terraform, LLM integrations, RAG systems, AI product development, or legacy system migration experience
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, we empower our teams to push boundaries and shape the future of mobility. As we continue to scale globally, we harness cutting-edge technology to make mobility smarter, more sustainable, and more affordable.
If you're looking for a place where you can drive change and redefine how millions of people travel, Flix is the place where you can lead your journey!
Jobs at Flix
Helpful information
- Read what is m/f/d in the job title
