Expert Full-Stack Developer / Technical Lead Job ID: JP055097

ITproposal; Brussel Hoofdstad; Sur place; EUR 90 000 - 110 000; Plein temps

Résumé du poste

ITproposal is seeking an Expert Full-Stack Developer / Technical Lead to provide hands-on technical leadership for application development, maintenance and modernisation in a Belgian context. You will design, implement and supervise REST APIs using C# / .NET, ASP.NET Web API and Blazor, while aligning with security and DevOps practices.

The role requires strong leadership, architecture vision and mentoring of developers, with experience in Azure, Swagger/OpenAPI, JWT/OIDC and SQL Server.

Qualifications

• Expert-level experience with .NET Development and ASP.NET Web API.
• Strong C# / .NET Core development experience.
• Experience with Blazor, Azure Bus, Microsoft Azure and SQL Server.
• Knowledge of authentication/authorization and security best practices.

Responsabilités

• Lead and guide developers on technical design and implementation.
• Develop and maintain applications and modernisation efforts.
• Design scalable, reliable and maintainable solutions.
• Prepare technical documentation and support deployment activities.
• Mentor developers and promote development best practices and design patterns.

Connaissances

C# / .NET Core

ASP.NET Web API

Blazor

Azure

JWT / OAuth

REST APIs

Unit/Integration testing

Leadership

Dutch

French

English

Outils

Swagger/OpenAPI

Azure DevOps

Git

SQL Server

Azure

Description du poste

About the job Expert Full-Stack Developer / Technical Lead Job ID: JP055097

Expert Full-Stack Developer / Technical Lead

We are looking for an Expert Full-Stack Developer / Technical Lead to provide hands‑on technical leadership for application development, maintenance and modernisation.

Key Responsibilities

• Lead and guide developers on technical design and implementation.
• Develop and maintain applications using C# / .NET, ASP.NET Web API and Blazor.
• Design scalable, reliable and maintainable solutions.
• Develop REST APIs and integrations using Swagger/OpenAPI and Azure Bus.
• Implement secure authentication and authorization using JWT, OIDC and claims.
• Perform code reviews, unit testing and integration testing.
• Troubleshoot complex technical issues and optimise application performance.
• Work with Microsoft Azure, DevOps and Git environments.
• Apply security best practices, including OWASP/OAuth/OpenID.
• Collaborate with architects, analysts and infrastructure teams.
• Prepare technical documentation and support deployment activities.
• Mentor developers and promote development best practices and design patterns.

Required Skills

• Expert-level experience with .NET Development and ASP.NET Web API.
• Strong C# / .NET Core development experience.
• Strong knowledge of authentication/authorization.
• Experience with Blazor, Azure Bus, Microsoft Azure and SQL Server.
• Good understanding of networking concepts and DevOps/server management.
• Experience with REST, Swagger/OpenAPI and secure application development.
• Knowledge of unit and integration testing.
• Strong leadership, communication and problem‑solving skills.

Languages

• Dutch: Active knowledge
• French: Active knowledge
• English: Active knowledge

Level: Expert

Profile: Full-Stack Developer / Technical Lead