Senior .Net Developer – Belgium
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Senior .Net Developer – Belgium (Hybrid)
Senior .Net Developer – Belgium (Hybrid)
About the Mission
As a Senior .NET Developer, you play a key role in the design, development and maintenance of robust software solutions based on Microsoft technologies. You bring your technical expertise to guarantee the quality of the code, the sustainability of the solutions and the performance of the systems. You are also a technical mentor to other team members.
Responsibilities
- Actively participate in the development of software components in .NET (Framework and Core)
- Design scalable technical solutions in collaboration with the architecture team
- Technically supervise team members and foster a culture of excellence
- Carry out code reviews and ensure compliance with good development practices
- Analyze functional needs with analysts and translate them into technical solutions
- Ensure the quality, performance, security and maintainability of applications
- Participate in optimizing system performance
- Integrate and evaluate new technologies in line with business objectives
Behavioral Skills
- Ability to critically analyze and integrate information
- Structured and solution-oriented thinking
- Ability to generate viable alternatives and draw relevant conclusions
- Technical leadership and collaborative spirit
- Resilience and adaptability in the face of technical or contextual changes
Language Skills
- Proficiency in one of the two national languages: FR or NL (level C2)
- Very good level of English (level C1)
We offer an interesting job in the provision of ICT and Data services which has an impact on society, with numerous advantages:
- A good balance between professional and private life
- Flexible schedule in the provision of 40 hours per week (7:30 a.m. to 8 p.m. with fixed times between 9 a.m. and 12 p.m. and 1 p.m. and 4 p.m.)
- Possibility of teleworking
- Workspaces organized according to activities
- Easy accessibility via public transport
- Car and bicycle parking in the building
- Individual locker
- Company restaurant
NL Versie
Als Senior .NET Developer speel je een sleutelrol bij het ontwerpen, ontwikkelen en onderhouden van robuuste softwareoplossingen op basis van Microsoft-technologieën. Je levert technische expertise, garandeert codekwaliteit en ondersteunt het technische mentor van je team.
Required Skills
- ASP .NET Web API
- Authentication/Authorization (JWT, OIDC, claims)
- Blazor
- C# / .NET (Core, 10)
- Entity Framework Core
- MVC
- REST API’s, REST
- Swagger/OpenAPI
- SQL Server
- Testing (unit + integration)
Practical Information
- Company: Confidential
- Location: Brussel – Hybrid
- Start Date: 29 June 2026
- End Date: 31 December 2026
- Duration: 7 months
- Contract Type: Freelance / Mission
- Application Deadline: 18 June 2026
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