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

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. 

Community & Fun: Enjoy team events and connect with developers from around the globe!