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Full-time jobs › Germany

Senior Software Engineer (m/f/d)

flix · Berlin · Full-time

About this role

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.  

We’re looking for a skilled  Senior Software Engineer  to join our high-impact  team Orion – Supply Division  and help us shape the future of mobility operations. Our team owns a critical product at the heart of the Flix ecosystem — optimizing how Flix coordinates with Mobility Partners to keep millions of passengers moving across the globe.  

We maintain and continuously evolve a mature, stable product while simultaneously pushing it forward — tackling complex architectural challenges, reducing manual processes, and exploring AI-driven solutions. You'll take real ownership, contributing not just to code, but to product and technical decisions that directly impact the business.  

If you enjoy working in a collaborative, self-organized team where engineers have a genuine voice, and you're excited about solving complex problems at scale — this might be the right next step for you.  

Our tech stack:

Backend development:  Java, Spring / Spring Boot, Kafka   Databases:  MongoDB (DocumentDB), MySQL / Postgres (RDS), Redis (Elasticache)    Cloud services:  AWS, S3   DevOps / Infrastructure:  Kubernetes, Docker, Gitlab CI, Terraform   Additional tools and technologies:  Microservices architecture, Event-driven systems, Distributed systems design and implementation  

About the Role

• You’ll collaborate with a distributed, self-organized, cross-functional team, taking full ownership of the development process and technical decisions  

• You’ll have the opportunity to design new products from the ground up while continuously improving existing ones, with room to explore and implement cutting-edge technologies  

• Drive the development process in an Agile environment, placing our users at the center of each solution you and your team create  

• Lead technical decisions not just within your team, but across teams, improving technical excellence through collaboration and lateral leadership  

• Help define and deliver products that optimize the coordination between Flix and Mobility Partners, enhancing efficiency and reducing manual tasks  

• Be part of a team building a critical product within the Flix ecosystem—solving complex challenges due to product’s diverse user base and Flix’s global presence  

About You

• 6+ years of experience as a Software Java and/or Kotlin Engineer, with knowledge of distributed systems, including Spring/Spring Boot, Kafka, MySQL/Postgres, Redis, MongoDB and S3  

• Willingness to work with both Java (for existing products) and Kotlin (fo