Java/Kotlin Tech Lead Amsterdam

Build a Cloud-Native mobility platform set to disrupt Public Transport in Europe | Kotlin, Spring Boot, Docker, Kubernetes, AWS (Serverless), MongoDB, Android | Permanent Contract

Amsterdam
€ 95.000

Java

Kotlin

Spring Boot

Docker

Kubernetes

AWS

MongoDB

Vacancy: Java/Kotlin Tech Lead Amsterdam

Do you want to take the lead on a promising mobility product that radically simplifies travel across Europe?
Do you get excited about building scalable cloud-native systems where you define the technical direction?
Would you love to guide a small, experienced team while also contributing hands-on to a complex software product?
And do you say yes to a salary up to €95.000, hybrid work, a modern stack and a product-focused role with societal relevance?

Then read on! This might just be your next opportunity.

Your Employer: In-house Engineering Team Building the Future of European Mobility

This engineering-first company recently launched a product with a clear mission: to make public transport smarter, more user-friendly, and accessible, for millions of travelers across Europe. The platform simplifies access to mobility by putting smart technology and intuitive interaction at the center removing traditional barriers.

What makes this moment unique: the product is live and on the verge of rolling out across Europe. That means major technical challenges in terms of scalability, security, and interoperability with transit partners. As Tech Lead, you’ll set the technical direction while directly influencing how millions of people move across borders.

You’ll join a small, close-knit team of senior engineers working fully in-house. No consultancy just building together toward a rock-solid platform. Here, content comes before hierarchy, and quality over speed. Expect autonomy, freedom in architecture decisions, and direct collaboration with product and UX.

Your Role: Java/Kotlin Tech Lead Amsterdam

As Java/Kotlin Tech Lead Amsterdam, you’ll drive the technical development of this mobility platform. You’ll collaborate with product management and UX, mentor a team of engineers, and shape the technical roadmap. At the same time, you’ll remain hands-on in backend and cloud component development.

How do you design a serverless, event-driven architecture that handles millions of check-ins per day? How do you build a secure, scalable backend with minimal latency and maximum reliability? These are the questions you’ll take the lead on.

You’ll work with the latest tools in the JVM stack, cloud-native services, and mobile integrations. You’ll have the freedom to evaluate new technologies, design refactoring strategies, and mentor teammates all to deliver a scalable, reliable and impactful product ready for European expansion.

What is asked?

At least 8 years of experience as a Backend developer
Experience with architectural decisions, scalable backends, and technical mentoring
Proficiency in Java and/or Kotlin & Spring Boot
Experience with Docker, Kubernetes, and cloud-native development is a big plus
Familiarity with MongoDB, CI/CD, and security best practices is a plus
Knowledge of mobile platform integration (Android) is a plus
Strong communication skills and ability to bridge product and engineering