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)
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
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
N-iX
1 700
N-iX is a European software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in six countries spanning Europe and the US. Today, we are a strong community of 1,700+ professionals and a reliable partner for global industry leaders and Fortune 500 companies. N-iX is actively hiring in Poland and has an office in Krakow.