Urgent - we are hiring senior Java profile / Solution Architect - experienced developerbr/ Happening is urgently looking for a Java expert to join one of our clients on strategic, high-impact projects.br/ br/ h2Your mission /h2 ul li Design, analyze, and develop Java / J2EE solutions aligned with functional and technical requirementsbr/ /li li Define and implement scalable, secure, and high-performing architectures (MicroServices, API-first, cloud)br/ /li li Ensure code quality through best practices (TDD, CI/CD, DevSecOps, code review)br/ /li li Collaborate with cross-functional teams in an Agile / Scrum environmentbr/ /li li Coach and mentor developers when neededbr/ /li li Contribute to both new application development and the maintenance/evolution of existing systemsbr/ /li /ul br/ h2Technical stack (non-exhaustive) /h2 ul li Languages / Frameworks: Java, JEE, Spring, Spring Boot, Hibernate / JPA, Node.js (TypeScript), GWTbr/ /li li API Integration: REST, SOAP, JSON, XML, API design, Kafka, event-driven architecturebr/ /li li Frontend: Angular, HTML, CSS, JavaScriptbr/ /li li Databases: PostgreSQL, Oracle, PostGIS, RDBMS, NoSQL, key-value storesbr/ /li li Testing Quality: JUnit, Assertj, Test Driven Developmentbr/ /li li Tools Methodologies: Maven, GIT, Jira, Confluence, Mirobr/ /li li Cloud DevOps: AWS, Azure, CI/CD pipelines, DevSecOpsbr/ /li li Security: solid knowledge of security standards and best practicesbr/ /li /ul br/ h2Profile we are looking for /h2 ul li 5-9+ years of proven experience in Java development and/or architecturebr/ /li li Strong expertise in Spring/Spring Boot, Hibernate, JPAbr/ /li li Proven experience in API design, integration, and distributed environmentsbr/ /li li Solid knowledge of cloud architectures (AWS/Azure) and/or hybrid solutionsbr/ /li li Experience in Agile / Scrum, ideally with a lead developer or Solution Architect rolebr/ /li li Strong analytical mindset, autonomy, and excellent communication skillsbr/ /li li Previous experience in public sector projects is a strong plusbr/ /li /ul Location setup: Hybrid mission: minimum 2 days per week on-site in Belgiumbr/ br/ If you are a seasoned Java expert with strong experience in development, architecture, and modern best practices, and want to join a challenging project with a rich technology stack: apply now!br/