Senior Scala + Java Engineer

About the client:

Our customer is the European online car market with over 30 million monthly users, with a market presence in 18 countries. As a Senior Scala Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities

• Design and implement scalable backend services in Scala


• Work extensively with Typelevel libraries (Cats, Cats Effect, FS2, Http4s, etc.)


• Model complex business domains using strong type systems


• Build and maintain event-driven and distributed systems


• Contribute to architectural decisions around concurrency, streaming, and data consistency


• Write clean, testable, and maintainable code


• Improve CI/CD pipelines, observability, and system reliability


• Collaborate closely with product and platform teams

Tech Stack

• Scala (2.13 / 3)


• Cats / Cats Effect / FS2 / Http4s

Kafka (event-driven architecture)

• PostgreSQL 


• Docker / Kubernetes


• AWS


• CI/CD (Github Actions)

Required Experience

• 4+ years of backend development experience (Scala)


• Strong production experience with Java


• Java Spring Boot knowledge 


• Hands-on experience with the Typelevel ecosystem


• Familiarity with event-driven architectures (Kafka)


• Deep understanding of: Effect systems (Cats Effect); Functional programming principles; Type classes, higher-kinded types; Pure vs impure boundaries


• Experience building distributed systems


• Strong understanding of concurrency and asynchronous programming


• At least upper-intermediate English level 

Nice to Have

• Experience with Scala 3


• Knowledge of tagless-final patterns


• Experience in fintech or high-integrity domains


• Experience contributing to open source

We offer*:

• Flexible working format - remote, office-based or flexible


• A competitive salary and good compensation package


• Personalized career growth


• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)


• Active tech communities with regular knowledge sharing


• Education reimbursement


• Memorable anniversary presents


• Corporate events and team buildings


• Other location-specific benefits

*not applicable for freelancers