Over de functie

## About the role As a Senior Java Developer, you will build reliable, scalable software that directly supports the quality and continuity of digital services. You will work on complex backend solutions, contribute to technical decision-making, and help the team deliver robust systems. This role combines hands-on development with senior-level collaboration, quality focus, and technical leadership. In this part-time position, you will have an impact on architecture, performance, and maintainability while supporting other developers in their growth. ## What we offer - Salary guidance aligned with seniority and part-time commitment; competitive employment conditions - Flexible part-time working week of 32 hours - Room for professional development and knowledge sharing - A challenging environment with complex technical issues - Competitive benefits package ## Responsibilities - Develop and maintain backend functionality in Java with a focus on scalability and reliability - Translate functional requirements into technical solutions and safeguard technical quality - Improve the performance, security, and maintainability of existing applications - Collaborate with product, QA, and other developers to deliver solutions on time and with care - Review colleagues’ code and coach team members on best practices - Identify technical risks and actively contribute to architectural decisions ## Requirements - At least 5 years of experience as a Java Developer or in a comparable backend role - Strong knowledge of Java and common backend principles - Experience with REST APIs, data modelling, and relational databases - Familiarity with software testing, code reviews, and CI/CD practices - Good command of the Dutch language, both spoken and written - HBO or WO level of thinking, preferably in Computer Science or a similar field ## Nice to have - Experience with Spring Boot - Knowledge of cloud environments such as AWS, Azure, or GCP - Experience with microservices architectures - Knowledge of containerisation with Docker or Kubernetes - Experience working in an Agile/Scrum environment