Senior Software Engineer (m/f/d)

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 (for new ones)   Experience in making archi