Full-Stack Developer
- Level
- Senior
- Work type
- Remote · Belgium only
Not stated in the posting: salary, visa.
Open. First seen 21 October 2026.
About the role
At Uni Systems, we are working towards turning digital visions into reality. We are continuously growing and we are looking for a professional Full-Stack Developer to join our UniQue Brussels, Belgium team.
What will you be bringing to the team?
- Develop front-end applications using Angular as the primary responsibility, and back-end applications using Java as a secondary responsibility, preferably as a member of an Agile team.
- Apply data and security best practices, including input validation, authentication and authorization, secure storage, and compliant logging and monitoring.
- Ensure web applications are optimized for performance and functionality across different browsers and devices.
- Design and develop responsive applications.
- Develop and maintain features across the entire stack, from designing user interfaces and consuming APIs to implementing server-side business logic and database interactions.
- Participate in the design and creation of scalable software.
- Maintain code integrity, quality, and organization.
- Write clean, functional code for both front-end and back-end applications.
- Compile and analyze data, processes, and code to troubleshoot problems and identify areas for improvement.
- Perform unit and integration testing, debug applications, fix issues, and validate code changes.
- Deliver solutions that meet functional and non-functional requirements and align with user expectations.
- Write technical documentation.
- Deploy and manage applications on cloud platforms using CI/CD pipelines and containerization technologies.
- Bridge the gap between front-end and back-end development, facilitating communication and ensuring the cohesive integration of all system components.
Requirements
Uni Systems's standard text
What do you need to succeed in this position?
- Bachelor's degree + minimum of 12 years of professional IT experience, or a Master's degree + minimum of 10 years of professional IT experience.
- At least 5 years of experience with Angular and TypeScript.
- At least 3 years of experience writing unit tests using Karma/Jasmine and/or Vitest.
- At least 2 years of experience developing Java applications and designing APIs using Swagger.
- Proficiency in HTML5, CSS3, JavaScript, TypeScript, Angular v18 or later, and Bootstrap.
- Experience with front-end build tools, including Angular CLI, Webpack, and Vite.
- Experience with development and DevSecOps tools, including SonarQube, Git, JIRA, Confluence, and CI/CD pipelines.
- Experience developing applications in AWS and applying cloud security and secure coding best practices.
- Experience designing and documenting APIs using Swagger.
- Understanding of software design principles and web accessibility standards.
- Experience with front-end unit and integration testing using frameworks and tools such as Jest, Karma, and Vitest.
- Knowledge of modern front-end frameworks and their core principles, as well as integrating front-end and back-end builds into CI/CD pipelines.
- Self-study training completed through e-learning platforms such as LinkedIn Learning or Udemy, as well as any previous certifications in AWS Cloud, web applications, Java, or Angular will be consider an asset
- Very good command of English, both spoken and written, corresponding to Level B2 or higher of the Common European Framework of Reference for Languages (CEFR).
What this role asks for
Particular to this role
CSS · Git · Jira · OpenAPI · Webpack
Rare in Uni Systems's other 24 open postings.
Standard for full stack roles
AWS · CI/CD · JavaScript · TypeScript
Common in full stack postings at any company.
98% of this description is written for the role. The rest is Uni Systems's standard text, folded away below.
Compared with Uni Systems's other open jobs.
The team: International BU
This role is one of 9 open in International BU. 7 were posted in the last 30 days.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Java (5 of 9), JavaScript (5 of 9), Angular (4 of 9), CI/CD (4 of 9), HTML (4 of 9), Agile (3 of 9), AWS (3 of 9)
OTHER ROLES ON THIS TEAM
- UI/UX Designer posted Oct 21
- Full-Stack Developer posted Oct 20
- IAM & Cloud Security Architect posted Oct 16
- Automation Engineer posted Oct 16
- Full-Stack Java Developer posted Oct 12
- Data Scientist - AI and NLP posted Oct 9
- Senior Java Engineer (Documentum) posted Sep 18
- AI Enablement Lead posted Sep 11
From the team and dates on Uni Systems's own job board.
Posting history
Reposted 2 times since 9 April 2026: a posting for this role in Brussels was taken down and the role was posted again.
- 21 October 2026 – open (this posting)
- 20 October 2026 – open
- 9 April 2026 – closed 15 June 2026
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