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Full-stack .NET Developer

Apollo Solutions

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Location:
Belgium, Brussels

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided

Job Description:

We’re looking for a Freelance .NET Full Stack Developer (Medior) to join one of Belgium’s leading players in the energy sector. You’ll work on impactful projects that strengthen the country’s electricity infrastructure and accelerate the green energy transition. This is a long-term freelance opportunity within an innovative, international environment.

Job Responsibility:

  • Develop and maintain full stack applications using .NET 8, React, SQL Server, MongoDB and related tools
  • Deliver clean, maintainable code aligned with development standards
  • Collaborate closely with the teams and contingent workers to build scalable, reliable systems
  • Contribute to solutions that support Belgium’s energy transition and grid reliability

Requirements:

  • 3+ years’ hands-on experience with .NET 8 (backend focus)
  • 3+ years’ hands-on experience with React + JavaScript
  • 3+ years’ hands-on experience with SQL Server & MongoDB
  • 3+ years’ hands-on experience with RabbitMQ
  • Strong communication, accountability, and teamwork skills
  • Proficiency in French (with Flemish understanding) or Flemish (with French understanding), plus English

Nice to have:

  • Blazor experience
  • Python skills
What we offer:
  • Occasional travel to Germany (all costs covered)
  • Flexible hybrid working model with a strong focus on well-being at work

Additional Information:

Job Posted:
December 19, 2025

Work Type:
Hybrid work
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