Senior Software Engineer, Arnhem

Senior Software Engineer, Arnhem

All About Work – Senior Software Engineer (Back‑end) located in Arnhem, Netherlands.

€Tot €5.313,00 per maand bruto fulltime – full‑time, permanent.

Responsibilities

• Build, test and document software for the KOERS system – a Spring Boot microservice architecture written in Java/Kotlin.
• Maintain and develop backend services that register property and vehicle transactions for the Dutch Cadastre.
• Implement and update API contracts (REST, SOAP, XML, JSON) and manage event‑sourced data flows with Axon Framework.
• Design, create and maintain unit, integration and system tests (JUnit, Mockito, Wiremock, Kluent, AssertJ).
• Automate deployments with Tekton, Docker and Kubernetes; participate in continuous delivery pipelines.
• Collaborate with Scrum teams (Agile/Scrum/DevOps), provide technical guidance and support cross‑team initiatives.
• Operate production environments – monitor, troubleshoot, and resolve incidents.
• Leverage AI tooling (Github Copilot) to accelerate development activities.

Qualifications

• Fluently Dutch in written and spoken form.
• Bachelor or Master level (HBO/WO) in IT, Engineering or related field.
• Minimum 5 years of experience in a modern Java / Spring Boot environment.
• Minimum 3 years of Kotlin experience.
• Extensive experience with unit & integration testing, and with relational databases (PostgreSQL).
• Hands‑on experience building, deploying and operating microservices using Docker, Kubernetes and OpenShift.
• Knowledge of Tekton, GitLab CI, GitHub Actions or equivalent CI/CD tools.
• Experience with continuous delivery, monitoring (Grafana, Prometheus, Loki) and incident response.
• Understanding of Axon Framework, event sourcing and CQRS.

Key Technologies & Tools

• Languages: Java (21+), Kotlin, Bash.
• Frameworks: Spring Boot, Spring MVC, Spring Cloud Gateway, Javalin, Axon.
• Databases & Integration: PostgreSQL, Hibernate, JDBC, CQRS, event sourcing.
• Web services: REST, SOAP, XML, JSON.
• DevOps: Docker, Kubernetes, Azure, OpenShift, Helm, Tekton, ArgoCD, SonarQube, Git, Trivy.
• Testing: Spring Test, JUnit, Mockito, Wiremock, Kluent, AssertJ.
• Messaging: Axon Server.
• Monitoring & Logging: Grafana, Prometheus, Loki.
• Project Management & Collaboration: Agile/Scrum, Jira, Git, Gitea, Artifactory, Slack, Microsoft Teams.
• AI Tooling: Github Copilot.

Benefits for Detacheerders (temporary contract)

• Application processing within 24 hours and rapid feedback.
• No relationship or competition clause.
• Immediate pension contributions via Stipp from Day 1.
• Flexible payroll options – weekly or every four weeks.
• Applicable CAO of the client.

Additional Information

• Start date is planned for Monday 10 November 2025.
• Applicant must be able to work from the Arnhem office at least 2 days per week.
• A declaration of good conduct (VOG) will be required.

All applications must be submitted via the supplied screening questions to ensure accurate processing.