Senior Backend Developer to work on Register of Voters (ROVER) upgrade from ASP.NET MVC 5 /.NET Framework 4.x to the latest.NET.

S.i. Systems

📍 Calgary, Alberta, Canada 💼 Contract 🕒 Posted March 23, 2026

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Job Description

Our public client is looking for a Senior Backend Developer to work on Register of Voters (ROVER) upgrade from ASP.NET MVC 5 / .NET Framework 4.x to the latest .NET.
Must-haves:
5+ years backend development with C#/.NET, including production experience on ASP.NET MVC 5 / .NET Framework 4.x and ASP.NET Core.
Hands‑on migration/modernization experience: upgrading .NET Framework apps to latest .NET with minimal disruption.
Strong EF6 → EF Core migration experience (LINQ/API differences, lazy/eager loading strategies, performance tuning).
Proven experience designing RESTful APIs (versioning, validation, error contracts, auth, rate/perf considerations).
Deep SQL and performance tuning skills on Microsoft SQL Server (indexes, query plans, batching, partitioning where applicable).
Experience building batch data processing and exception handling frameworks...
            

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Job Details

Location Calgary, Alberta
Job Type Contract
Category Computer Occupations
Posted Date March 23, 2026
Application Deadline May 02, 2026