Senior C# .NET / VueJS Developer

Industry: Energy & Utilities

Location: Gosselies (Hybrid – 2 days onsite minimum)

Start Date: January 2026

Duration: 12 months (renewable)

Engagement: Freelance / Consultant (Full-time)

About the Role

We are looking for two experienced C# .NET and VueJS Developers to strengthen the web application development team within the customer domain of a leading organization in the energy sector. The role involves full-stack development, maintenance, and enhancement of enterprise applications while contributing to technical design and mentoring junior developers.

Key Responsibilities

• Contribute to technical designs (SAD) based on functional specifications and user stories.
• Develop, test, and secure applications following internal standards and best practices.
• Maintain and document applications to ensure long-term reliability and scalability.
• Fix and resolve identified bugs and production incidents.
• Coach junior developers and support their technical growth.

Technical Requirements

• Proven experience: 5+ years in full-stack development (.NET & VueJS2/VueJS3).
• Strong knowledge of C#, .NET, JavaScript, VueJS, and Blazor.
• Experience with Azure Cloud (Functions, Web Apps, Service Bus).
• Familiarity with Azure DevOps, Git/TFS, and Agile/Scrum methodologies.
• Expertise in secure coding practices and modern development standards.
• Testing experience (unit, performance, and security tests).

Profile & Soft Skills

• Autonomous, rigorous, and proactive.
• Excellent communication and teamwork skills.
• Solution-oriented and adaptable to evolving project needs.
• Fluent in French (C2), good knowledge of English (B1).
• Driver’s license and car recommended (limited public transport access).