Senior .NET Fullstack Developer Consultant – Talent Pool

Talent Pool Overview:

Our clients regularly look for experienced .NET developers for business-critical applications. We are building a pool of senior .NET fullstack developers we can propose quickly when a new mission opens. By joining, you will be among the first profiles we contact when a matching mission opens – as soon as a matching client request comes in.

About Keystone Solutions:

Keystone Solutions is a Brussels-based IT consultancy and recruitment company – Bridging Technology & Talent. Organised in five practices (Management Consulting, IT Analysis, IT Development, IT Security and IT Infrastructure), we place experienced IT professionals on missions with leading organisations in Belgium, mainly in banking & insurance, federal and regional public institutions, utilities and industry.

Typical Mission Contexts:

• Development and modernisation of business applications in .NET
• API and integration development
• Cloud-native development and migration to Azure
• Agile product teams with DevOps practices

Typical Responsibilities:

• Design and develop applications and REST APIs in .NET / C#
• Build front-end features with Angular or React
• Contribute to architecture, code reviews and technical best practices
• Work with Azure DevOps, CI/CD pipelines and automated testing
• Collaborate with analysts, testers and product owners in Agile teams

Must-Have:

• Minimum 5 years of hands-on experience with .NET (Core / .NET 6+) and C#
• Solid experience with SQL Server (or Oracle) and REST APIs
• Front-end experience with Angular or React
• Experience with Azure DevOps and CI/CD

Nice-to-Have:

• Azure cloud services; Docker / Kubernetes; microservices
• Terraform or other infrastructure-as-code
• Experience as technical lead or mentor
• Microsoft certifications (e.g. AZ-204)

Languages:

• Most of our clients operate in a bilingual environment: French and/or Dutch is required for the majority of missions, with a strong preference for bilingual FR/NL profiles
• Professional English is expected in most IT environments

Engagement Model:

Missions are typically medium to long term, full-time or part-time, on site or hybrid (usually 2–3 days on site). Depending on your preference, we work with you as a Keystone Solutions employee or as a freelance/subcontractor.

How This Talent Pool Works:

• Intake call with one of our recruiters to understand your expertise, preferred environments, languages and availability
• Keystone CV: we prepare with you a client-ready CV highlighting your most relevant experience
• Fast matching: when a client publishes a matching request, we contact you first and can submit your profile quickly – often before the market
• Transparency: we never submit your profile without your explicit consent for each mission
• Regular check-ins to keep your availability and preferences up to date

What We Offer:

• Priority access to missions matching your profile, with well-known Belgian organisations
• A dedicated recruiter who knows your profile and your career goals
• Feedback after client submissions and interviews
• Coaching, training opportunities and a community of IT professionals
• Competitive conditions aligned with your seniority and the market

Location: Belgium – mainly Brussels, also Flanders and Wallonia depending on the mission. Hybrid work is common.

Interested? Apply with your CV and mention your availability date, preferred working languages and employment preference (employee or freelance).