Senior Developer / Application Architect (.NET & Angular) – Freelance
Antwerp, Belgium
Start: May 2026 | Duration: Until July 2027 (extension possible)
Full-time | Hybrid
About the Role
We are looking for a Senior Developer / Application Architect to join a dynamic development team working on business-critical applications.
In this role, you will act as the technical authority, shaping the architectural direction and elevating development standards. You will balance innovation with stability while contributing hands-on to the development of robust and scalable applications.
Your Responsibilities
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Define and guide architecture decisions across backend (.NET/C#) and frontend (Angular or Blazor)
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Act as a technical lead and mentor, coaching developers and promoting best practices
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Develop and maintain high-quality, business-critical applications
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Improve and optimize the software development lifecycle (tools, workflows, standards)
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Collaborate closely with analysts, testers, and project managers
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Drive adoption of modern technologies, including AI-assisted development
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Ensure clean code, performance, and scalability across solutions
Your Profile
Must-Have
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Minimum 5 years' experience in application development
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Strong expertise in .NET / C#
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Solid experience with Angular (or similar frontend frameworks)
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Experience as an Application Architect or technical lead
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Proven experience in Agile development environments
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Experience with Atlassian tools (Jira, Confluence)
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Strong hands-on experience in coding, testing, and debugging
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Dutch proficiency at CEFR level C2
Nice to Have
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Experience with Blazor
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Knowledge of API Gateway solutions (e.g. Kong)
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Experience with OpenShift or container platforms
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Familiarity with AI tools in development (e.g. Claude)
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Experience with SQL and database design
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Experience with Bitbucket
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Proven experience in team leadership and coaching
What's in It for You
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Take a leading role in architectural decision-making
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Work on impactful, business-critical applications
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Be part of a forward-thinking team embracing innovation and AI
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Opportunity to mentor and grow development teams
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Flexible hybrid working model
Additional Information
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Freelance assignment under framework agreement
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Full-time engagement
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Hybrid work setup
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Long-term opportunity with possible extensions
