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Robert Half Logo Robert Half · IT - Software Development

Senior .NET Software Developer

United States, South Jordan · Job Posted April 23, 2026
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Job Description

We are looking for an experienced Senior .NET Software Developer to join a Long-term Contract opportunity based in Utah. This role will partner closely with a senior technical lead to evaluate legacy application customizations and help shape how essential functionality is incorporated into a modern .NET Core platform. The ideal candidate brings strong engineering judgment, enjoys working through complex application behavior, and can contribute effectively in a collaborative, low-ego team environment.

Job Responsibility

  • Assess legacy Web Forms application components and identify business-critical functionality that should be incorporated into the modern .NET Core solution
  • Work closely with the lead developer to review customized code paths, clarify system behavior, and recommend practical implementation approaches
  • Translate older application logic into scalable configuration patterns and maintainable features within the current platform architecture
  • Build, enhance, and support backend services using C#, ASP.NET, and related .NET technologies aligned with modern development standards
  • Develop and optimize data access layers using Entity Framework, with awareness of environments that may also include NHibernate
  • Contribute to cloud-based application delivery using Azure services, including hosted applications, database services, and containerized workloads
  • Support migration-related development efforts by helping move functionality from legacy frameworks into a more modern, service-oriented architecture
  • Partner with teammates to troubleshoot issues, improve application performance, and deliver reliable solutions that meet long-term business needs

Requirements

  • 10+ years of software development experience with strong depth in C# and the .NET ecosystem
  • Hands-on experience building applications with ASP.NET, including work in both Web Forms and modern .NET Core environments
  • Proven background supporting or executing migrations from legacy Web Forms applications to newer .NET-based architectures
  • Solid experience with Entity Framework
  • familiarity with NHibernate is beneficial
  • Practical knowledge of Azure services such as App Services, Azure SQL Database, and cloud-based application deployment patterns
  • Experience working with Docker and containerized development or deployment workflows
  • Ability to analyze existing codebases to understand both technical implementation and underlying business intent
  • Strong collaboration skills with a proactive approach to asking questions, aligning with team members, and delivering work responsibly

What we offer

  • medical insurance
  • vision insurance
  • dental insurance
  • life insurance
  • disability insurance
  • 401(k) plan
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