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

S.i. Systems

📍 Ottawa, Ontario, Canada

Contract Computer Occupations Posted February 25, 2026
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Job Description

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)


    • Job Details

    Location
    Ottawa, Ontario, Canada
    Job Type
    Contract
    Category
    Computer Occupations
    Posted Date
    February 25, 2026
    Application Deadline
    April 06, 2026