SENIOR Web Developer/System Architect


You focus on the further development of Onyx One. Your gaze is always future-oriented so we can deploy the latest technologies.

For this, you will have to:

  • Get to know Onyx One from A to Z.
  • Develop a system architecture that the entire team can follow. The code must be extendable, easy to test and easy to maintain.
  • Analyse and develop new requested functionalities with the product owner.
  • Guide junior developers and help take them forward to the next level.


You will work with:

  • Web technologies such as PHP, React, Node.js, JQuery, Javascript, HTML/CSS, Bootcamp, MySQL
  • Object oriented programming
  • Git en gitflow in a Linux based development environment
  • The Atlassian stack (Jira, Confluence…)

You have a proven record in the use of:

  • PHP (4+ years)
  • Design patterns
  • OOAD principles
  • Modern development architect/frameworks (eg. SOA, micro-services, serverless architecture, domain driven design…)
  • Knowledge of React, Node.js, Express… is a big advantage
  • You have a bachelor’s or master’s degree in IT or equivalent through experience
  • Your specialty is to develop user-friendly and intuitive software
  • You love creative work and like to come up with new ideas yourself
  • You take initiative and you are a strong communicator
  • You speak and write English fluently
  • You live in Belgium or abroad


  • An attractive salary in accordance with your experience and with fringe benefits
  • The possibility to further develop yourself through courses…
  • A lot of room for responsibility and initiative
  • A modern environment in which you work with enthusiastic colleagues in a relaxed atmosphere and with self-managing teams

Are you our new Senior Web Developer / System Architect?
Respond quickly, we are eager to meet you!



Katrijn Van den Hende
+32 9 269 80 21