Contract

.NET Core Developer - Mid-Senior Level

Posted on 29 December 25 by John Maher

  • Phoenix, Arizona
  • $45 - $60
Logo

Powered by Tracker

Job Description

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

Job Information

Rate / Salary

$45 - $60

Sector

IT

Category

Not Specified

Skills / Experience

Not Specified

Benefits

Not Specified

Our Reference

JOB-7136

Job Location