Kotlin/Java Back-end Engineer (Candidates based in the Netherlands)

About this role

Key Responsibilities Develop scalable back-end services in Kotlin, using frameworks like Ktor or Spring Boot (Kotlin DSL). Design, build, and maintain event-driven microservices and APIs (REST or GraphQL). Write clean, maintainable, and well-tested code, applying TDD/BDD principles with tools like JUnit or MockK. Contribute to distributed architectures using Kafka, Cassandra, or similar technologies. Define infrastructure using Infrastructure-as-Code tools like Terraform or Bicep.

Collaborate in Agile DevOps teams to ship and run production-ready software. Participate in code reviews, architecture discussions, and documentation writing. Requirements A minimum of 5 years of professional experience. Advanced proficiency in the English Language (at least B2 in speaking, writing, listening, and reading). A minimum of a bachelor's degree in computer science, Software Engineering, or a related field.

Solid background in Java, comfortable working in mixed Kotlin/Java codebases. Strong experience with Spring Boot (Kotlin DSL) or Kotlin-first frameworks like Ktor. Experience designing and scaling microservices, with a focus on performance and maintainability. Strong experience with distributed systems and event-driven architectures, ideally in high-traffic or mission-critical environments where scalability and reliability are essential.

Familiarity with messaging systems (Kafka, RabbitMQ) and databases (Cassandra, PostgreSQL). Proficiency in API design patterns (REST, GraphQL) and secure coding. Hands-on knowledge of Docker, Kubernetes, and cloud platforms (AWS, Azure, or GCP). Experience with CI/CD pipelines and Git-based workflows. Agile mindset What We Offer Competitive Compensation : Salary tailored to your skills and experience. Generous Time Off : 25 paid vacation days (based on a 40-hour work week).

Relocation Support : A relocation and travel budget to ease your transition. Tax Benefits : Eligibility for the 30% ruling. Travel Reimbursement : We've got your daily commute covered. Top-Notch Equipment : A high-quality device to ensure you work efficiently. Professional Development : Financial support for certifications, technical training, and language courses—because we value your long-term career growth. Comprehensive Relocation Assistance : Extensive support to help you settle in smoothly.