Senior Developer – .NET & Java

Our client, a leading organization in the energy sector, is looking for an expert developer to support critical infrastructure initiatives. This role focuses on developing and integrating secure authentication and authorization services within a complex digital landscape.

• Develop, test, and document software components for user authentication and authorization services.
• Create sample applications and technical guides to demonstrate integration within legacy and new systems.
• Configure and extend off-the-shelf solutions such as access managers, API gateways, and directory services.
• Promote continuous integration and deployment through release automation and configuration management.
• Collaborate with technical stakeholders to translate requirements into robust security solutions.
• Take ownership of backlog items and participate actively in squad team sprints.

• 8+ years in backend development with C#, .NET, and Java.
• Professional experience with Vue.js, Blazor, and JavaScript.
• Deep knowledge of security standards including OAuth2, OIDC, SSO, and MFA.
• Practical experience with cloud platforms and container orchestration using Kubernetes and AKS.
• Hands-on experience with SQL Server, LDAP, REST, JSON, and YAML.
• Knowledge of Git and DevOps methodologies.
• Proactive, analytical, and able to work independently.
• You are fluent in English with a good level of Dutch and/or French.

Nice to Haves

• Experience with Typescript, PowerShell, or Bash.
• Knowledge of React or SAML2.
• Familiarity with identity platforms such as Keycloak, ADFS, Ping, Okta, or EntraID.
• Understanding of Micro-services architecture and PKI.

• Start date: Mid-October.
• Duration: project length.
• Work regime: Full-time.
• Location: Brussels.
• Working model: Hybrid (2 days per week onsite).
• Contract: open to both permanent employees and freelancers.