Full-Stack Engineer (Java)

Uni Systems

Brussels, Brussels, Belgium Remote permanent

Posted: February 12, 2026

Required Skills

Job Description

At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a Full-Stack Engineer (Java) to join our UniQue team.

What will you be doing in this role?

• Design and development of software components and building blocks using suitable back-end components and frameworks (Java Spring, JPA).
• Design of application APIs using suitable frameworks (REST, Swagger).
• Design and implementation of application integration with corporate IAM services for authentication and authorization purposes.
• Delivery through a CI/CD pipeline.
• Implementation of code according to a technical analysis.

Requirements:
What will you be bringing to the team?

• Master’s degree in IT with minimum 13 years of relevant experience, including proven and recent coding experience in Java web application development (Java Spring, Hibernate).
• At least 6 years of experience with Java web application development, including 3 years with Java Spring and REST API development.
• Minimum 3 years of experience in developing complex information systems.
• Minimum 3 years of frontend development using Angular or Kendo UI.
• Good knowledge of UI/UX for web applications, including responsive design.
• At least 2 years of experience with Agile software development practices (refactoring, test-driven development, user story modeling).
• Very good knowledge of web application design, in particular Java back-end components and frameworks (Spring Framework, Spring Data, Spring for Web Services, JPA, Spring Security).
• Experience with JEE applications.
• Experience with CI/CD pipelines, containerization (Docker), Git, Maven, Jenkins.
• Familiarity with Atlassian tools (Bitbucket, Jira, Confluence) and development IDEs (VS Code or JetBrains IDEs).
• Good knowledge of JUnit.
• Good knowledge of Enterprise Architecture, Java application servers (Oracle WebLogic), relational DBMS (Oracle DB), SQL, and UML modeling methods.
• Knowledge of interoperability technologies (web services, REST APIs) and security concepts, including OAuth.
• Knowledge of SCRUM methodology is an advantage.
• Fluent in English (at least B2).

At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.

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