Senior Java Engineer; m​/f​/d - FlixTrain Fleet Management System

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.

As a Senior Java Backend Engineer you will be part of a team that focuses on automating and streamlining Flix Train’s operational processes, creating internal tools that help teams manage a growing and increasingly modern fleet. You’ll join a small, collaborative team (6 people) with a strong sense of ownership and a pragmatic, low‑bureaucracy way of working.

The team is part of the Flix Train Tech division
, which currently consists of three product teams and is set to grow significantly over the coming year, expanding to six teams as Flix Train continues to scale its operations, fleet, and supporting technology. The complexity of our operations grows and so does the need for reliable, well‑designed systems that reduce manual work, support regulatory requirements, and enable teams to operate efficiently at scale.

This role sits in a greenfield environment, where many systems are designed and built from scratch. Engineers are closely involved throughout the entire lifecycle: understanding operational challenges, contributing to architectural decisions, and ensuring high quality through solid testing practices. We value engineers who are curious about the business, eager to participate in discovery and problem framing, and comfortable navigating ambiguity.

Our Tech Stack:
Java, Spring/Spring Boot, Kafka, MySQL (RDS), MongoDB (Document DB), AWS, Docker, Gitlab CI, Kubernetes, Terraform, Datadog

• You will be part of a self‑organized, cross‑functional distributed team owning a set of products and will hence directly contribute to the success of the business
• You and your team will place our users at the center when developing solutions together
• You drive the development process using an Agile environment
• You will be able to design new products from scratch and frequently deliver new versions of existing products, using continuous integration and automation
• You will work with and learn how to use cutting‑edge technologies and tools
• Lead technical decisions inside and across teams to improve technical excellence through lateral leadership
• Be a mentor and coach for your colleagues

• 5+ years of professional experience with Java
• Strong experience developing distributed systems using Spring Boot
• Experience with relational (MySQL, PostgreSQL, RDS) and No‑SQL databases (MongoDB, Document DB)
• Experience with caching solutions such as Redis, Elasti Cache
• Experience with event‑driven architectures and messaging services like Kafka/SQS/SNS/RabbitMQ
• Hands‑on experience with AWS services (e.g. RDS, S3, EC2)
• Experience with Dev Ops and infrastructure technologies, including Docker, k8s, Git Lab CI, Terraform, and Datadog
• Upper‑intermediate level of English or higher
• Experience working within an Agile setup

• Data Engineering skills: ETL, Snowflake, etc.
• You've worked with distributed teams before
• Upper‑intermediate level of German or higher

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!

• 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

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!