Senior Scala + Java Engineer (#4814)

Overview

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
• Scala (2.13 / 3)

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
• 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

Benefits

• Flexible working format – remote, office‑based or flexible
• A competitive salary and good compensation package
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing

Project: N-iX is a global software solutions and engineering services company.