Software Designer – Energy Industry

📍 Location: Gosselies (2 days/week onsite, hybrid possible)

🕒 Start date: January 2026

📅 Duration: 12 months (extendable)

💼 Engagement: Freelance / T&M – Full-time

About the Role

A leading organization in the energy sector is looking for a Software Designer / Senior Developer to strengthen its “Client Factory” team. This long-term assignment focuses on defining and designing technical solutions, ensuring code quality, and supporting development best practices in a collaborative Agile environment.

Key Responsibilities

As Software Designer

• Contribute to defining software solutions and project estimations.
• Design technical architectures for various software components.
• Support, monitor, and optimize team developments.
• Ensure adherence to best practices in maintainability, performance, and security.

As Senior Developer

• Translate functional specifications into technical designs (SAD).
• Implement and test applications (.NET, Blazor, VueJS).
• Write and maintain documentation.
• Debug and resolve issues, maintaining application reliability.
• Contribute to Agile ceremonies and continuous improvement initiatives.

Required Skills

• Languages & Frameworks: .NET 10, Blazor, VueJS2 & VueJS3.
• Tools: Visual Studio, Azure DevOps, Git/GitHub, CMS Umbraco.
• Methodologies: Agile (Scrum/Kanban).
• Testing: Unit, performance, and security testing.
• Cloud: Experience with Azure (preferred).
• Language: French C2, English B1.
• Soft Skills: Team player, autonomous, rigorous, communicative, and solution-oriented.

Experience

• 5+ years developing in VueJS and .NET environments.
• 5+ years applying secure development best practices.
• 3+ years migrating front-end applications (VueJS2 → VueJS3).
• Proven experience designing technical architectures and coaching developers.
• Experience in client communication within the energy sector.

Practical Details

• Location: Gosselies – car recommended due to limited public transport access.
• Onsite presence: Minimum 2 days/week.
• Assignment type: Freelance (T&M individual).
• Department: Factory Web (FACWEB).