Java / Angular Developer / Front End

NTT DATA is looking for a freelance Java / Angular Developer (Hybrid - Brussels) Location & Working Model Brussels, BelgiumHybrid working modelRegular on-site presence may be required depending on project needsStart as soon as possibleFreelance contract until 31/12/2026Long-term modernization and migration project within a large enterprise environment. About the Opportunity We are looking for a Java / Angular Developer to join a large-scale modernization initiative focused on upgrading several business-critical web applications. The primary objective of this project is to migrate existing applications from Angular 15 to Angular 22 while ensuring application stability, quality, and maintainability throughout the transition. This position offers the opportunity to work in a complex enterprise environment with modern development practices and technologies. Key Responsibilities Lead and execute the migration of applications from Angular 15 to Angular 22.Analyze and implement necessary code changes to ensure compatibility with the target architecture.Design and execute non-regression testing activities.Create and maintain technical documentation related to migration changes.Communicate impacts and updates to relevant stakeholders and key users.Contribute to continuous improvement of development and testing practices.Collaborate closely with development, testing, and business teams in an Agile environment.Required Experience Minimum 3 years of professional experience in software development.Experience working in complex, multi-application environments.Strong experience maintaining and evolving existing applications.Experience in enterprise application modernization projects is highly desirable.Technical Skills Angular 22 (or recent Angular versions with migration experience)Java 21+Spring Framework (Core, JDBC, Data, Security, AOP)Spring BootJPA / HibernateRESTful APIsOpenAPI / SwaggerSOA, Backend-for-Frontend (BFF), CQRSTest-Driven DevelopmentJUnitMockitoSpring TestCypressMavenDockerOpenShift / KubernetesGit & GitLab CI/CDSonarQubeNPMOAuth 2.0Jira & ConfluenceSQLAgile / Scrum methodologiesCI/CD practicesNice-to-Have Skills Experience with JMSOracle databasesWebLogicPrevious experience with large-scale Angular migration projectsKnowledge of specific business applications within the target environmentSoft Skills Strong analytical and problem-solving abilities.Autonomous and proactive mindset.Ability to quickly understand and maintain existing codebases.Customer-focused and solution-oriented.Strong communication and teamwork skills.Commitment to quality and continuous improvement.Languages French: Native or fluent level required.NTT DATA - a part of NTT Group - is a trusted global innovator of IT and business services headquartered in Tokyo. We help clients transform through consulting, industry solutions, business process services, IT modernization and managed services. NTT DATA enables clients, as well as society, to move confidently into the digital future. We are committed to our clients' long-term success and combine global reach with local client attention to serve them in over 50 countries. Visit us at nttdata.com