Medior .NET Developer

Mission Overview:

We are seeking a team to successfully execute a migration project for various essential information tools that support the business processes of the Compensation Service, aiming to modernize and enhance service continuity.

Role:

As a Medior .NET Developer, you are proficient in Microsoft technology solutions, specifically in .NET development. The Medior .NET Developer is responsible for the development and integration of various components.

Responsibilities:

• Take charge of development based on .NET technologies and the integration of various components;
• Document and customize the solution in close collaboration with the architecture group.

Behavioral Skills:

• Analyze information: Targeted analysis of data and critical assessment of information;
• Think analytically: Recognize structure in information, understand logical cause-and-effect links, and distinguish essential from accessory;
• Integrate information: Evaluate information - process information critically and assess available alternatives. Establish links between various data, design alternatives, and draw appropriate conclusions. Establish correct and relevant links between various data for integration into a coherent whole;
• Generate alternatives: Imagine and enumerate a series of alternatives;
• Draw conclusions: Develop an adequate conclusion based on the synthesis and generated alternatives.

As a consultant representing Keystone Solutions, you will work on-site, engaging with dynamic projects that offer diverse challenges across various client environments. This role promises turbo-charged learning opportunities and a commitment to your career growth within our framework. Being a

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.

Duration: 14/09/2026 - 31/12/2026 4 months • (full time)

Skills required:

• ASP .NET Web API - Level: Confirmed - 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: Confirmed - Most recent: Any time
• Entity Framework Core - Level: Confirmed - Most recent: Any time
• MVC - Level: Confirmed - Most recent: Any time
• REST API's - 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
• WCF - Level: Confirmed - Most recent: Any time

Language requirements:

Dutch
Level Active knowledge
English
Level Passive knowledge
French
Level Active knowledge