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# Senior Full Stack Java Developer

- **Company:** EngiFlex
- **Location:** Brussel, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** HTML, Java (Programming Language), Spring Security, Artificial Intelligence, Apache Tomcat, Application Performance Management, Unit Testing, Cascading Style Sheets (CSS), Software Quality, Continuous Integration, Elasticsearch, Java Persistence API, Junit, PostgreSQL, Nginx, OpenShift, E2e Testing, Mockito, Software Engineering, Software Systems, TypeScript, Web Applications, Test-Driven Development (TDD), Large Language Models, Prompt Engineering, Spring-boot, Backend, AngularJS, Gitlab-ci, Kubernetes, Docker, Jenkins
- **Published:** October 15, 2026
- **Apply:** https://www.careerjet.be/jobad/be8e8d43249885d754f4f447ba916debf8

## About the Role

* You have solid experience as a full-stack developer.
 * You have strong hands-on knowledge of Angular, Typescript, HTML, CSS, Java, Spring Boot, Spring Data JPA, PostgreSQL and Elasticsearch.
 * You are comfortable working with testing practices such as TDD and with unit testing frameworks such as JUnit.
 * You have knowledge of Spring Security, Flyway, QueryDSL, Mockito or similar tools.
 * You are familiar with hexagonal architecture and deployments on Kubernetes or OpenShift.
 * Experience with Docker, Tomcat, Nginx, GitLab CI/CD, Jenkins or GHCP is a plus.
 * You have a good understanding of modern AI topics such as the EU AI Act, LLMs, security, confidentiality, prompt engineering, agents and MCP.
 * You adapt easily to evolving standards and guidelines related to AI usage.
 * You communicate fluently in either Dutch or French and have a working understanding of the other language.
 * You work accurately, communicate clearly and can operate independently within a team environment.

## Description

As a Full Stack Developer, you contribute to the design, development and maintenance of web applications with a strong focus on quality, performance and maintainability. You work with stakeholders and development teams to translate functional needs into reliable software solutions.
Project Context:
You will contribute to applications in the healthcare domain, including web components that support patient referral prescriptions, Vitalink and related digital services.
️ Key Responsibilities:

 * Develop and maintain full-stack web applications using Java, Angular, Typescript, HTML and CSS.
 * Build back-end components with Spring Boot and Spring Data JPA, and work with PostgreSQL and Elasticsearch.
 * Collaborate with cross-functional teams to define, design and deliver new features.
 * Monitor application performance, resolve bottlenecks and fix defects.
 * Apply Test-Driven Development practices and contribute to code quality, structure and automation.
 * Write and execute unit, integration and end-to-end tests, including work with JUnit.
 * Provide technical guidance to less experienced developers.
 * Follow current development practices around CI/CD, containerization and secure software delivery.
 * Keep up with relevant evolutions in software engineering and apply them where useful.