Over de functie

## About the role As a Senior Java Developer, you will build stable, scalable software that directly supports the quality and continuity of digital services. You will work on complex backend solutions, contribute to technical decisions, and help the team deliver robust systems. This role combines hands-on development with senior-level collaboration, quality focus, and technical guidance. In this part-time position, you will make an impact on architecture, performance, and maintainability while also supporting the growth of other developers. ## What we offer - A salary indication that matches 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 Java backend functionality with a strong focus on scalability and reliability - Translate functional requirements into technical solutions and safeguard technical quality - Improve the performance, security, and maintainability of existing applications - Work closely 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 similar backend role - Solid 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 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 in an Agile/Scrum environment