Senior Ontwerper

Freelance Solution Designer – .NET / C# / Azure Architecture    For one of our clients in the Brussels region, we are looking for an experienced   Freelance Solution Designer   with a strong technical background in   .NET, C# and Azure   .
Start:
September 2026
End:
August 2028

Location:

Brussels area
Remote:
50% remote / 50% onsite

The following information provides an overview of the skills, qualities, and qualifications needed for this role.
About the role
We are looking for a   hands-on Solution Designer   who can translate business requirements into solid technical solutions.
You will analyze functional needs, understand existing applications and define the right technical approach. You will work closely with developers and technical teams to ensure solutions are scalable, maintainable and aligned with the overall architecture.
This role requires someone who combines   software development knowledge, architecture skills and strong communication abilities   .

Technical background
You have a strong background in software engineering and solution design, with experience in:
.NET / C# development
Microsoft Azure cloud services
Azure Functions, Cosmos DB, Azure Service Bus and API Management
REST APIs and application integrations
Event-driven architectures and messaging solutions
Distributed systems and enterprise applications
Software architecture and technical solution design
Database design and data flows
Front-end technologies such as React or Blazor (plus)
Mobile applications and synchronization concepts (plus)
A previous experience as a   Software Developer, Technical Lead, Software Architect or Technical Analyst   is highly appreciated.

Your responsibilities
Translate business requirements into technical designs.
Define solution architecture and technical components.
Analyze impact on existing systems and integrations.
Make technical design decisions and document them clearly.
Support developers during implementation.
Review technical solutions and propose improvements.
Create architecture documentation, API specifications and technical flows.
Collaborate with analysts, developers, testers, architects and business teams.

Profile requirements
Minimum  2 years of experience   in a Solution Designer, Application Architect, Software Architect, Technical Lead or similar role.
Proven experience designing software solutions.

Experience with APIs, integrations, cloud platforms and distributed systems.
Experience working with development teams in a software delivery environment.
Strong analytical and problem-solving skills.
Ability to work independently and take ownership of solutions.
Fluent in   Dutch or French   (minimum C2 level).
Fluent in   English   (minimum C1 level).
Available for   at least 2 days onsite in Brussels   .

Interested?
Are you a freelance   Solution Designer with a strong .NET / C# / Azure background   and looking for a long-term assignment? xlxgzvr

Get in touch and let's discuss this opportunity.