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Senior.NET Developer leading upgrade critical voter registry system from ASP.NET MVC (.NET

Job in Mission, BC, Canada
Listing for: S.i. Systems
Contract position
Listed on 2026-06-04
Job specializations:
  • Software Development
    .NET Developer, ASP.NET Developer, C# / Unity Developer, Senior Developer
Job Description & How to Apply Below
Position: Senior.NET Developer responsible for leading the upgrade critical voter registry system from ASP.NET MVC (.NET

Our client is looking for a Senior .NET Developer responsible for leading the upgrade of a mission‑critical voter registry system from ASP.NET MVC (.NET Framework 4.x) to a modern, supported .NET platform.

Must-haves:

  • 10+ years .NET development experience using C#, ASP.NET MVC, Razor
    , and SQL Server
  • Proven delivery of multiple legacy .NET modernizations (.NET Framework 4.x → .NET 6+ / .NET 7+)
  • Strong hands-on experience with Entity Framework (EF6 and/or EF Core) and Auto Mapper
  • Expertise refactoring tightly coupled MVC applications with complex business rules
  • Experience building and maintaining RESTful APIs
  • Working knowledge of .NET Core / modern .NET architecture
  • Experience using CI/CD pipelines and Dev Ops practices for deployment
  • Demonstrated ability to mentor and upskill developers for long-term application support
  • Strong skills in technical documentation
    , communication
    , and stakeholder collaboration
  • Comfortable working with large, data-intensive systems (1M+ records)

    • Responsibilities:

  • Collaborate with business analysts, solution architects, and project management to define a realistic modernization roadmap
  • Lead the design and development of ROVER 2.0, aligning with modern .NET standards and best practices
  • Execute the migration and refactoring of legacy ASP.NET MVC components, data access layers, and business logic
  • Improve application maintainability, performance, and scalability while preserving data integrity
  • Support and guide internal developers through pairing, code reviews, and knowledge transfer
  • Contribute to architecture decisions
    , testing strategies, and deployment approaches
  • Produce clear technical documentation to support long-term maintenance and enhancements
    • Position Requirements
    10+ Years work experience
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