Full‑Stack .NET Developer

Full‑Stack .NET Developer – Gas Flow Management Platform

Duration: Immediate start; initial 3‑month contract with strong potential for extension

Setup: Freelance (Daily rate / Limited Company / Umbrella / Sole Trader)

Location: Brussels (3 days onsite, 2 days remote)

Join a cross‑functional, agile team designing and enhancing end‑to‑end digital solutions across the gas flow management lifecycle: customer onboarding, contracting, demand processing, flow planning, network balancing, billing, reporting and B2B messaging. You’ll shape a scalable, robust platform that underpins transmission, storage and terminalling for multiple European TSOs.

Key Responsibilities

• Design, develop and maintain high‑quality software components using .NET 8/.NET Framework with ASP.NET Web API and WCF
• Translate business requirements in collaboration with product owners and analysts into clean, testable code
• Contribute to architectural discussions around Domain‑Driven Design, Clean Architecture and established design patterns
• Implement and maintain automated tests (xUnit, NUnit) and integrate CI/CD pipelines via Azure DevOps
• Review peers’ code, mentor junior developers and uphold coding standards
• Support release activities: technical documentation, deployments, incident investigation and live‑environment troubleshooting
• Participate fully in Agile ceremonies: sprint planning, backlog refinement, reviews, retrospectives and daily stand‑ups

Technical Stack & Skills

• Backend: .NET 8/.NET Framework, ASP.NET Web API, WCF
• Data & Messaging: SQL Server, Oracle, RabbitMQ, NHibernate, Entity Framework
• Testing & CI/CD: xUnit/NUnit, Azure DevOps Pipelines
• Frontend: Blazor (advantageous)
• DevOps & Tools: Git, automated deployment and monitoring