Contract

Senior Software Architect with experience designing and implementing web-based applications in a Microsoft environment

Posted by S.i. Systems • Ottawa, Ontario, Canada

📍 Ottawa, Ontario 🕒 March 02, 2026

About the Role

Our client is looking for a Senior Software/Application Architect with experience designing and implementing web-based applications in a Microsoft environment

Must Have:

  • 8+ years in .NET development
  • 4+ years architecture
  • Strong experience with YARP or similar reverse proxy architectures
  • Proven delivery of large system integrations
  • API-first design experience (REST, JSON, versioning)
  • Authentication integration (SSO, OAuth2/OIDC)
  • Strong debugging and system-analysis skills
  • Nice to Have:

  • Hands-on architecture for government or enterprise systems (preferred)


  • Ready to Apply?

    Submit your application today and take the next step in your career journey with S.i. Systems.

    Apply Now