Senior Java Engineer

Nix

Bulgaria (Europe, Ukraine) Remote permanent

Posted: March 27, 2026

Job Description

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 Java 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 Java

• 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

• Java

• 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 (Java)

• Java Spring Boot еxperience

• Familiarity with event-driven architectures (Kafka)

• Hands-on experience with the Typelevel ecosystem

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

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