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 architectural decisions, and writing clean, performant, well-tested code • Autonomy and ownership in solving technical challenges, as well as strong communication skills when working with a distributed team • A strong product mindset, with a passion for user experience and a data-driven approach to decision-making • Experience in coding with AI • Fluent in English (upper-intermediate or higher) Nice-to-haves: • Experience with DevOps and infrastructure: Kubernetes, Docker, Gitlab CI, AWS, Terraform • Familiarity with data engineering (ETL, Snowflake) • Ability to teach people, share knowledge and experience, explain complex things in plain language, mentor, and provide constructive feedback 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: Acce