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Expert Full-Stack Developer Technical Lead Job ID JP055097

ITProposal


Job Location:

Brussels - Belgium

Monthly Salary: Not provided by the employer
Posted: 20 August 2026 (Yesterday)
Application Deadline: 17 November 2026
Vacancies: 1 Vacancy

Job Summary

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 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 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