Senior .NET Security Engineer - Identity & APIs

Apollo Solutions; Brussel; On-site; EUR 65,000 - 90,000; Full time

Job summary

Apollo Solutions is seeking a Senior .NET Developer to join a technical team focused on authentication, authorisation and secure application integration. You will work on C#/.NET, REST APIs, and modern identity and cloud technologies, delivering secure software components and integrations.

Bring strong C#/.NET skills, knowledge of OAuth/OIDC/SAML2, and experience with Azure and Kubernetes to drive secure, scalable solutions in a DevOps-friendly environment.

Qualifications

• Proven C# / .NET development experience.
• Experience with REST / JSON / YAML APIs.
• Frontend frameworks: Vue.js, React or Blazor.
• LDAP and SQL Server experience.
• OAuth2 / OIDC / SAML2 knowledge.
• Git and DevOps practices.

Responsibilities

• Develop and maintain secure software components and services
• Build and integrate authentication and authorisation solutions
• Develop REST APIs and application integrations
• Work with identity and security standards across new and existing applications
• Support cloud-native development and DevOps practices
• Contribute to technical documentation, testing and code quality

Job description

Apollo Solutions is seeking a Senior .NET Developer to join a technical team focused on authentication, authorisation and secure application integration. You will work on C#/.NET, REST APIs, and modern identity and cloud technologies, delivering secure software components and integrations.

Bring strong C#/.NET skills, knowledge of OAuth/OIDC/SAML2, and experience with Azure and Kubernetes to drive secure, scalable solutions in a DevOps-friendly environment.