Senior Software Engineer (C# / .NET) - Contractual Role
Tech Holding20 days ago
Responsibilities
- Design and develop secure backend services and APIs using C# / .NET.
- Implement authentication and authorization mechanisms (SSO, RBAC, OAuth, JWT).
- Integrate applications with Azure Active Directory (Entra ID).
- Remove hardcoded secrets and integrate with Azure Key Vault.
- Implement audit logging and monitoring hooks across services.
- Build and enforce secure API communication standards.
- Implement PII masking and secure data handling logic in applications.
- Secure and optimize third-party integrations (Stripe, SendGrid, Twilio, etc.).
- Support environment separation and deployment improvements.
- Collaborate with DevOps and DB teams on security, DR, and compliance initiatives.
- Participate in debugging, incident resolution, and root cause analysis.
Requirements
- 5+ years of experience in C# / .NET development.
- Strong experience with ASP.NET Core, Web APIs, and microservices architecture.
- Experience implementing authentication & authorization (OAuth, JWT, SSO).
- Hands-on experience with Azure services, especially Azure AD (Entra ID).
- Experience with secure coding practices and data protection.
- Familiarity with API integrations (Stripe, SendGrid, etc.).
- Experience with logging frameworks and monitoring tools.
- Understanding of CI/CD pipelines and cloud deployments.
- Strong debugging, problem-solving, and communication skills.