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Medior web developer React / Node

We are Onyx. We are looking for talent.

We are a Belgian scale up active in contractor management. We developed an online platform that allows companies to register, qualify and train their contractors, contractors and suppliers. The platform allows access to industrial sites and ensures that only qualified people go to work. It streamlines communication between contractors and manufacturers from different industries. Onyx One operates is 44 countries and includes more than 65,000 contractors.

Onyx One employs 15 people in Belgium, and has teams in several countries, inside and outside Europe. Team spirit, collaboration and co-creation are part of our DNA.


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

You do that by:

  • Getting to know Onyx One from A to Z
  • Working Agile
  • Analysing and developing new features
  • Maintaining existing features


You will work with:

  • Web technologies such as React, Typescript, GraphQL, MongoDB, Node /
    Express server, CSS, Docker, REST API’s
  • A SaaS platform hosted on AWS
  • Git versioning
  • Camunda, a process orchestration platform
  • The Atlassian stack (Jira, Confluence …)

What we expect from you:

  • You have at least 1 year of experience with React and/or Node
  • You have at least 1 year of experience with Typescript
  • 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 have a problem-solving attitude
  • You are fluent in English both spoken and written


  • An attractive salary in accordance with your experience and with fringe benefits
  • An intensive and focused training
  • The opportunity 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 teamsAre you our new Web Developer?

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

Send your resume and cover letter to Katrijn at
Do you still have a question? Feel free to contact us at the number +32 9 269 80 21