Senior .Net Developer

Keystone Solutions

Brussel, Belgium

12 days ago

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Role details

Contract type

Temporary contract

Employment type

Full-time (> 32 hours)

Experience level

Expert

Working hours

Regular working hours

Languages

English

Job source

www.careerjet.be

Tech stack

.NET Framework User Authentication C Sharp (Programming Language) Software Quality Code Review Data Integration Entity Framework Microsoft Software Microsoft SQL Server Model View Controller (MVC) OpenID Performance Tuning

+5 more

Swagger JSON Web Token Software Systems Blazor Web Api

Job description

As a Senior .NET Developer, you will play a key role in the design, development, and maintenance of robust software solutions based on Microsoft technologies. You will bring your technical expertise to ensure code quality, solution sustainability, and system performance. Additionally, you will serve as a technical mentor for 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;
Provide technical guidance to team members and foster a culture of excellence;
Conduct code reviews and ensure adherence to best development practices;
Analyze functional requirements 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.

Requirements

Critical analysis and information integration skills;
Structured and solution-oriented thinking;
Ability to generate viable alternatives and draw relevant conclusions;
Technical leadership and collaborative spirit;
Resilience and adaptability to technical or contextual changes.

Language Skills:

Fluency in one of the two national languages: FR or NL (level C2*);
Very good level of English (level C1*)., If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at . Duration: 14/09/2026 - 31/12/2026 4 months * (full time) Skills required:
ASP .NET Web API - Level: Expert - Most recent: Any time
Authentication/Authorization (JWT, OIDC, claims) - Level: Confirmed - Most recent: Any time
Blazor - Level: Confirmed - Most recent: Any time
C# / .NET (Core, 10) - Level: Expert - Most recent: Any time
Entity Framework Core - Level: Expert - Most recent: Any time
MVC - Level: Confirmed - Most recent: Any time
REST, Swagger/OpenAPI - Level: Confirmed - Most recent: Any time
SQL Server - Level: Confirmed - Most recent: Any time
Testing (unit + integration) - Level: Confirmed - Most recent: Any time