Full Stack .NET Developer

Full Stack .NET Developer – Blazor Location: Brussels, Belgium Work Model: Hybrid – minimum 2 days onsite per week Start Date: 12 October 2026 End Date: 31 December 2027 Languages • Dutch and/or French: Passive knowledge (an asset) • English: Professional proficiency Mission We are looking for a Senior Full Stack .NET Developer with strong hands-on expertise in Blazor to join an established Product Team working on Portals and Platform solutions . The consultant will contribute to ongoing development initiatives, working closely with product, functional and technical team members. The role requires a strong focus on software quality, maintainability and adherence to established development standards. The successful candidate will take ownership of assigned development activities and contribute to delivering robust, scalable and high-quality applications. Key Responsibilities • Design, develop and maintain full-stack applications using .NET 8 and Blazor WebAssembly . • Develop and enhance portal and platform solutions within the Product Team. • Build and maintain backend components and services using .NET and EF Core . • Work with relational and NoSQL databases, particularly SQL Server and MongoDB . • Develop and integrate asynchronous messaging solutions using RabbitMQ . • Apply Test-Driven Development (TDD) principles to ensure reliable and maintainable code. • Contribute to high-quality code delivery in accordance with established development standards. • Collaborate effectively with Product Team members and other technical and business stakeholders. • Take accountability and ownership of assigned development tasks. • Contribute to solutions based on microservices architecture where applicable. Technical Requirements Strong knowledge / hands-on experience required in: • .NET 8 • Blazor WebAssembly • Entity Framework Core (EF Core) • SQL Server • MongoDB • RabbitMQ • Test-Driven Development (TDD) • Full-stack application development Nice to Have: • Experience with microservices architecture • Experience developing enterprise portals and platform solutions Soft Skills • Strong communication and collaboration skills • Ability to take ownership and accountability for assigned tasks • Quality-focused development mindset • Ability to work effectively within an established multidisciplinary Product Team • Proactive and solution-oriented approach Interested? If you're an experienced Senior Full Stack .NET Developer with strong hands-on expertise in .NET 8, Blazor WebAssembly, EF Core, SQL Server, MongoDB, RabbitMQ and Test-Driven Development (TDD) , we'd love to hear from you. Apply now or send your CV to hr@onetechsolutions.be