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Senior React Developer

  • Location:

    Brussels

  • Sector:

    Informationstechnologie

  • Job type:

    Permanent

  • Salary:

    Negotiable

  • Contact:

    Roberto Mason

  • Contact email:

    Roberto.Mason@oliverjames.com

  • Job ref:

    JOB-072025-282853_1751523259

  • Published:

    1 Tag her

  • Expiry date:

    2025-08-02

  • Startdate:

    ASAP

SENIOR REACT DEVELOPER - Digital Innovation

Join a major player in the digital services sector that's undergoing a full transformation of its user platforms. The company is investing in building a brand-new digital interface to better serve millions of users across Belgium. They operate with a modern and collaborative approach to software development, embracing cloud-native technologies, DevOps practices, and design system standardization. You'll be part of a highly skilled internal team based in Brussels, working in a hybrid setup (minimum 2 days onsite).

This position is open to BOTH FREELANCER & INTERNALS employees.

SENIOR REACT DEVELOPER - THE PROFILE :

We're looking for a Senior React Frontend Developer with a strong background in large-scale, production-grade web applications. You'll be responsible for designing and implementing features in a complex single-page application using the latest tools and frameworks.

Must-Have Skills:

  • 5+ years of professional experience with modern frontend development
  • Advanced expertise in React, TypeScript, and JavaScript
  • Hands-on experience with React Hooks, component architecture, and performance optimization
  • Solid understanding of state management patterns and RESTful APIs
  • Comfortable with modern tooling (e.g. Vite, Jest, Git)
  • Strong track record building scalable SPAs in a production setting
  • Experience working in Agile and CI/CD environments

Nice-to-Haves:

  • Familiarity with Web Components (Lit) and design systems
  • Exposure to micro frontends or BFF (Backend-for-Frontend) patterns
  • Understanding of Azure, Docker, and Kubernetes
  • Background in high-security or data-sensitive environments

SENIOR REACT DEVELOPER - THE OFFER :

  • Freelance mission with a long-term outlook
  • Brussels-based, hybrid mode (2 days/week onsite)
  • Work on a modern stack in a cloud-native ecosystem
  • Real technical ownership with room for improvement and architectural input
  • Integration into a dynamic and high-level internal team
  • Opportunity to contribute to the evolution of an ambitious platform used by millions
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