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Senior Full Stack Developer to develop and enhance web-based applications for a large public sector client.

Company: S.i. Systems

Location: Calgary, London

Posted: June 08, 2026

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Position Details

Our client is looking for a Senior Software Developer (C#.net/JavaScript(react)) to work on the development and enhancement of web-based applications.

**The successful candidate will need to obtain or hold an enhanced reliability clearance (requires 5+ years in Canada)**

Must Haves:

  • 8+ years' experience as a Software Developer (Back-end, Front-end or full stack)
  • C#.Net Development experience including .net/asp.net/MVC
  • Javascript (react) experience 
  • Experience developing Web APIs
  • MS SQL Server experience 

    • Nice to have:

  • Azure B2C integration experience