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Full-Stack Developer

Uni Systems · Brussels, Belgium
Location
Brussels, Belgium
Work mode
Remote
Type
Full-time
Seniority
Senior
Salary
Not stated
Department
International BU
Languages
EN
Posted
20 Oct 2026

Verified open 20 Oct 2026 · Source: Workable

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

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).

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