Senior Full-Stack Engineer – .NET, Azure

We are looking for a motivated and autonomous
Senior Full-Stack Engineer
to join a dynamic engineering team. In this role, you'll design and develop cloud-native applications, APIs, and middleware solutions using
.NET Core, Azure, and React
. You'll collaborate with skilled developers, analysts, and architects, while also taking part in technical design and mentoring junior colleagues.

This role combines
deep backend expertise
with
React frontend development
, making it ideal for a seasoned engineer who thrives across the full stack.

What You'll Do

• Design and develop applications, APIs, and middleware solutions in .NET Core and React on Azure.
• Apply modern engineering patterns: DDD, microservices, CQRS, event-sourcing, SOLID.
• Build and secure cloud-native solutions with Azure services (Service Bus, Functions, App Services, Application Insights, Key Vault, Cosmos DB).
• Implement and test APIs with OAuth 2.0 authentication and Postman.
• Integrate with enterprise platforms such as Microsoft Dynamics 365.
• Contribute to technical design and architecture.
• Mentor junior developers and support knowledge sharing

What are we looking for?

• 10+ years of relevant professional experience in software development in:
• .NET Core 9 / C# 13 or higher
• React (frontend development)
• Azure Services (Service Bus, Application Insights, Key Vault, Cosmos DB, Functions, App Services)
• DDD, microservices, CQRS, event-sourcing, SOLID
• OAuth 2.0 and Postman
• Microsoft Dynamics 365 integration
• Containerization (Docker) and microservices architecture
• Additional plus: experience with Mathlab APIs, SharePoint (online/on-prem), MSMQ.
• Strong problem-solving skills and ability to work autonomously.
• Excellent communication skills in Dutch and English (French is a plus).
• Master's degree in Computer Science, Engineering, or equivalent.
• Valid .NET / .NET Core certification.

What do we offer?
Location: Brussels area (hybrid setup possible).

Start:

End:

Contract: Freelance or Permanent