.NET Developer French or Dutch
First seen by Alion on Oct 6, 2026.
We are seeking a .NET Developer to join our team in Brussels. The role focuses on building and integrating authentication and authorization services for our Digital Identity Fabric. You will work closely with IT staff and product squads to deliver secure solutions.
Key responsibilities
Develop, test and document software components for authentication and authorization.
Configure and extend off-the-shelf solutions such as access managers, API gateways and directory services.
Promote and improve continuous integration and deployment pipelines using automation and configuration management.
Collaborate with IT staff and product squads to understand integration needs and resolve issues.
Participate in sprint planning, execution and backlog refinement within the squad.
Prepare and lead workshops or meetings, delivering technical documentation and solution proposals.
Required qualifications
Strong experience with C#, .NET, Java and RESTful APIs (JSON, YAML).
Proficiency in UI development using Vue.js, Blazor and JavaScript.
Solid knowledge of authentication standards (OAuth2, OIDC) and web security concepts (HTTPS, cookies, CORS, SSO, MFA).
Experience with Kubernetes/AKS, Git, and DevOps/CI-CD practices.
Familiarity with LDAP, SQL Server and cryptographic concepts (symmetric/asymmetric keys).
Excellent communication skills in Dutch and/or French and English.
Nice to have
Scripting in TypeScript, PowerShell or Bash.
UI development experience with React.
Hands-on experience with IDP platforms (Keycloak, Okta, ADFS, Ping, EntraID) or micro-services architecture.
Interested? Apply now at [email protected]