We’re supporting a major Belgian organisation on a business-critical digital initiative. To strengthen existing delivery teams, we’re looking for a Medior .NET & Python Developer who wants to contribute to building a sustainable, reliable, and future-proof infrastructure. Logistics Role: Freelance .NET & Python Developer (Medior) Contract: Long-term assignment Location: Brussels (Hybrid – up to 3 days/week remote) Languages: English + French or Dutch (with passive understanding of the other) Start Date: ASAP / No later than end of February Rate: Competitive & negotiable Responsibilities Develop and maintain high-quality solutions following established development standards Work within existing Agile teams alongside internal staff and other contingent workers Deliver clean, reliable, and scalable code using modern technologies Take ownership of tasks and contribute proactively to team collaboration Participate in code reviews and day-to-day team ceremonies Required Skills Solid experience with .NET 8 and Python Strong knowledge of SQL Server and MongoDB Experience with messaging systems such as RabbitMQ Good communication skills and a strong sense of accountability Comfortable working in collaborative, fast-moving environments Why This Mission? Contribute directly to large-scale, impactful projects driving the energy transition Join diverse, collaborative teams focused on innovation and sustainability Work in an environment where well-being, inclusion, and knowledge-sharing matter Interested? Get in touch to discuss the project, team context, and next steps.