Senior.NET Developer – Blazor
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Our client, a leading organization in the public health sector, is looking for a Senior .NET Developer to drive the design and delivery of modern, accessible business applications. This role focuses on building high-impact digital services from the user interface down to the backend, ensuring a consistent and responsive experience for citizens and healthcare professionals.
- Provide technical direction for frontend development and promote consistent application architecture and coding standards.
- Develop features, reusable components, and technical improvements using modern .NET and Blazor.
- Design scalable and maintainable user interface structures that align with accessibility and design system standards.
- Collaborate with analysts, architects, and stakeholders to translate business requirements into robust technical solutions.
- Integrate web applications with secure APIs and implement robust authentication flows.
- Ensure high code quality through structured peer reviews, static analysis, and comprehensive testing strategies.
- Support the continuous improvement of engineering practices and coach other developers to foster technical excellence.
- You have 8+ years of backend development experience with C# and Agile methodologies.
- You possess 6+ years of experience with Modern .NET and ASP.NET Core .
- You bring 6+ years of experience in frontend development using HTML , CSS , and Responsive Design .
- You're experienced with 6+ years of Testing and quality practices, including unit testing , integration testing , and UI automation .
- You have 6+ years of experience managing delivery with Git , Azure DevOps , and CI/CD pipelines.
- You possess 5+ years of experience implementing Security and identity protocols via OAuth 2.0 , OpenID Connect , and JWT .
- You bring 5+ years of experience in Data and integration with Entity Framework Core and SQL .
- You've worked for 3+ years with Blazor and Razor components .
- You have 3+ years of experience delivering solutions that meet Web accessibility and WCAG 2.1 AA standards.
- You are fluent in English with mastery of either French or Dutch .
Nice to Haves
- 3+ years of experience with Cloud platforms specifically Microsoft Azure .
- 2+ years of experience with Distributed systems and messaging via Azure Service Bus or NServiceBus .
- 2+ years of experience with JavaScript or TypeScript and frontend interoperability.
- 1+ years of experience using AI-assisted development tools such as GitHub Copilot or Claude Code .
- Knowledge of .NET Framework maintenance and passive knowledge of Dutch or French .
- Start date: 23/11/2026
- Duration: Initial project through 31/12/2026
- Work regime: Full-time
- Location: Brussels
- Working model: Hybrid (minimum 2 days per week onsite)
- Contract: open to both permanent employees and freelancers
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