Full-Stack .NET/React Developer - Brussels - 12-month contract - Hybrid (2 days/week on-site)

Full-Stack .NET/React Developer - Brussels - 12-month contract - Hybrid (2 days/week on-site), Our client based in Brussels is currently looking for a full-stack developer with deep .NET and React expertise ready to bring modern engineering practices to a complex and impactful environment We’re looking for an experienced Full-Stack Developer to join a development team in Brussels, working on scalable, cloud-native applications built on Microsoft Azure.

This is an opportunity to work with a team that values clean architecture, DevOps maturity and continuous improvement where your technical depth will directly shape the quality and performance of critical applications.

Missions

• Translating application storyboards and use cases into robust, functional applications
• Designing, building, and maintaining efficient, reusable and reliable code
• Integrating data storage solutions (databases, key-value stores, blob stores, etc.)
• Ensuring optimal performance, quality and responsiveness across applications
• Identifying bottlenecks and bugs and devising effective solutions
• Maintaining code quality, organization and automation
• Collaborating with central teams to strengthen DevOps capability across development teams

• 5+ years of professional .NET development experience, including recent work with .NET Core/.NET 8-10 (or equivalent) and REST API development
• 3+ years of professional React development experience
• 2+ years of hands-on experience with Microsoft Azure in a professional context
• 2+ years of experience with DevOps practices, including CI/CD pipelines (YAML) and deployment strategies such as blue/green deployment
• Fluent English (spoken and written), minimum B2 level
• Willingness to work on-site at least 2 days/week in Brussels

You’ll stand out with demonstrated experience in:

• Modern .NET practices (microservices architecture, feature flags, clean architecture)
• Software architecture and design patterns
• SQL and NoSQL databases in transactional or distributed systems
• Unit testing frameworks and coverage practices
• Git in collaborative environments
• Atlassian tools (Jira, Confluence) within Agile/DevOps workflows
• Agile methodologies (Scrum, SAFe)
• Adoption of new technologies, frameworks or modernisation initiatives
• AI-assisted development tools/IDEs (a plus)