Software Engineer

.NET DEVELOPER – BRUSSELS – 12 MONTHS+

My client is looking for an experienced Freelance .NET Developer to support the delivery of modern digital platforms within the energy and utilities sector.

Responsibilities:

• Design, develop, and maintain robust applications and microservices using .NET (C#, .NET Core/.NET 6+)
• Build and enhance APIs and backend services supporting energy platforms (e.g., billing, metering, grid systems)
• Contribute to modernisation initiatives, including migration from legacy systems to cloud-native architectures
• Ensure high availability and performance of systems handling real-time or near real-time data
• Implement secure and maintainable code, adhering to industry best practices
• Collaborate with cross-functional teams including product, DevOps, and data engineers
• Support integration with third-party systems, IoT platforms, and external data providers

Experience:

• Strong commercial experience with C# and .NET Core / .NET 6+
• Proven track record building APIs and distributed systems
• Experience with microservices and/or service-oriented architectures
• Background in energy, utilities, or related industries (e.g., smart metering, renewables, grid systems) is a strong bonus
• Familiarity with cloud platforms (Azure preferred, AWS/GCP also considered)
• Experience with containerisation (Docker) and orchestration (Kubernetes is a plus)
• Strong understanding of data handling and integration patterns
• Experience with SQL and/or NoSQL databases (e.g., SQL Server, Cosmos DB)
• Knowledge of CI/CD pipelines (Azure DevOps, GitHub Actions, etc.)
• Fluent English speaking

Start date: ASAP

Duration: 12 months+

Location: BRUSSELS (3 days per week expected in office)

• If you’d like to be considered for this role please send your CV to [email protected] or call +3228083006. Please pass this advert along to anyone else who might be interested.