Senior Full-Stack Kotlin Engineer (m/f/d) - Station Management & Inventory

We are looking for a motivated and curious Senior Full-Stack Engineer (Kotlin) to join our team in Supply Division and drive customer station experience to the next level!

In an ever growing network, Flix customers worldwide expect a comfortable and seamless experience at our stations as part of their travel experience. Our self-organized, cross-functional and distributed team builds products to enable Flix station managers to scale management of the station inventory, which a wide range of internal tech teams across Flix depend on, and overall serves to improve the experience at our stations for millions of passengers.

In this role, you will continue to shape the product by driving innovation, solving complex challenges, and creating a lasting impact on our organization.

About the Role

• You take ownership of roadmap epics as topic driver, aligning technical requirements and solutions across the team together with the product owner
• As part of the team you will work closely with business stakeholders on continuously developing and improving the product vision
• You always keep the business value in mind when making decisions
• You drive the development process using an agile environment
• As part of your daily work, you collaborate closely with your fellow team members, for example in pair and ensemble programming, doing code reviews, testing, and operations
• You frequently deliver new versions of the product, using continuous integration and delivery
• You work confidently with or learn how to use cutting‑edge technologies and tools including but not limited to:
  • Kotlin across server and browser (we use Kotlin a lot!)
  • JVM on server‑side (Ktor, Axon Framework)
  • Component‑based Frontend (Compose HTML, but we value experience with similar libraries and frameworks)
  • Distributed system architecture (Apache Kafka, HTTP/REST)
  • Infrastructure with CI/CD (AWS, Docker, Kubernetes, Terraform, Datadog, Gitlab)

About You

• 5+ years of software engineering experience, primarily backend development with a JVM language
• Willingness to work with Kotlin
• Solid front‑end skills with modern front‑end stack
• Experience with event‑driven architectures; exposure to event sourcing, CQRS, and domain‑driven design (DDD) is a plus
• Hands‑on experience with automation and deployment of applications into cloud infrastructure (e.g., AWS, Azure) using CI/CD pipelines and DevOps best practices
• Proficiency in system design and architecture
• You take responsibility for the product and technical decisions
• Clear written and spoken English communication skills

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.

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!