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CornerStone Technology Talent Services Linkedin · Posted 13d ago

Software Engineer

Fort Worth, Texas, United States

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Senior .NET Application Modernization Developer — Hybrid in Fort Worth

CornerStone Technology Talent Services is seeking a senior, hands-on .NET developer to help assess and modernize a mature VB.NET application into a modern C#/.NET solution.

This is not a simple code-conversion project. We are looking for someone who can reverse-engineer a legacy application, uncover embedded business rules and dependencies, determine what functionality must be preserved, and design a secure, maintainable, and supportable modern replacement.

Key responsibilities include:

  • Analyze and document an existing VB.NET/.NET Framework application
  • Identify business-critical functionality, dependencies, integrations, and technical debt
  • Design a modern C#/.NET and ASP.NET Core architecture
  • Develop a phased modernization approach that protects ongoing production operations
  • Apply modern practices such as dependency injection, async programming, automated testing, modern logging, and secure configuration
  • Document technical findings, recommendations, risks, and migration plans
  • Collaborate with technical teams and business stakeholders to validate requirements and scope

Required experience:

  • Strong professional experience with C#, modern .NET, and ASP.NET Core
  • Ability to read, troubleshoot, and support legacy VB.NET applications
  • Demonstrated legacy application modernization, refactoring, or replacement experience
  • API and systems-integration development
  • Strong software engineering, testing, source-control, and CI/CD practices
  • Excellent technical documentation and analytical skills

Additional preferred experience:

  • SSRS and SSIS
  • RabbitMQ or similar messaging technology
  • HTML5 and jQuery
  • Mission-critical, government, public-safety, law-enforcement, or regulated environments
  • Computer-Aided Dispatch or CentralSquare applications

Position details:

  • Contract engagement from August 2026 through January 2027
  • Possibility of extension
  • Hybrid work schedule
  • Monday–Friday, 8:00 a.m.–5:00 p.m.
  • 40 hours per week
  • Virtual interview process


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