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

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!