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Senior .NET Developer
Phoenix, AZ
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Title: Mid–Senior .NET Developer

Location: Phoenix, AZ (2–3 days onsite per week)

Engagement: Contract

Experience Level: Mid–Senior (approximately 6–7 years)


About the Role

We are seeking a Mid–Senior .NET Developer to play a key role in a multi-year modernization effort focused on migrating legacy applications to .NET Core. This position blends hands-on technical work with team leadership through influence, mentorship, and collaboration.

This is not a “lone wolf” role. The ideal candidate brings solid technical judgment, patience with legacy systems, and a willingness to help guide junior developers while adapting to the pace and structure of a large organization.


What You’ll Be Doing

  • Lead and execute the replatforming of legacy .NET applications into .NET Core
  • Design and implement modern backend services with AWS integration
  • Support frontend and backend integration across modernization and new development efforts
  • Collaborate with developers of varying experience levels, offering guidance and support
  • Work within Agile-style workflows, adapting as needed to organizational constraints
  • Partner with stakeholders to balance modernization goals with operational realities


What We’re Looking For

  • 5+ years of strong, hands-on experience with .NET Core and .NET
  • Proven experience modernizing or refactoring legacy applications
  • Comfort working in large, structured, or public-sector-style environments
  • Experience contributing to or leading work in Agile teams
  • Strong communication skills and a collaborative, adaptable mindset
  • Willingness to work onsite two to three days per week



Nice to Have

  • AWS experience supporting .NET Core applications
  • Prior work in public sector or large enterprise organizations
  • Exposure to AI-enabled or cloud-native modernization frameworks
  • Experience supporting both frontend and backend development


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