Sr .NET Developer

Insight Global is seeking multiple Senior .NET Developers and a Lead for a large publicsector client in Phoenix, AZ. This role will support the design, enhancement, and optimization of critical enterprise applications used across the organization.
The ideal candidate is a handson developer with deep expertise in C#, .NET Core, SQL Server, and modern frontend technologies like React. This team is focused on modernization efforts, performance improvements, and building scalable, high-impact systems.
This is part of a broader hiring initiative that will also include a Lead-level resource and additional mainframe developers to support long-term system transformation efforts. Strong candidates will be highly autonomous, capable of owning workstreams, and comfortable working across the full stack.
This is a longterm hybrid opportunity offering stability, meaningful work, and the chance to contribute to highimpact systems serving the public sector.

We are a company committed to creating diverse and inclusive environments where people can bring their full, authentic selves to work every day. We are an equal opportunity/affirmative action employer that believes everyone matters. Qualified candidates will receive consideration for employment regardless of their race, color, ethnicity, religion, sex (including pregnancy), sexual orientation, gender identity and expression, marital status, national origin, ancestry, genetic factors, age, disability, protected veteran status, military or uniformed service member status, or any other status or characteristic protected by applicable laws, regulations, and ordinances. If you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send a request to View email address on click.appcast.io learn more about how we collect, keep, and process your private information, please review Insight Global's Workforce Privacy Policy:


Required Skills & Experience

10+ years of professional C# / .NET development experience (team prefers very senior profiles, ideally 10+ years mindset)
Experience with EDI, HL7, and FHIR
Strong SQL Server expertise, including advanced TSQL optimization, performance tuning, and refactoring
Experience with ASP.NET 4.0+ and .NET Core
Advanced Entity Framework experience
Strong experience building and consuming RESTful APIs
React experience with hooks and state management (Redux or Context API)
Proficiency with JavaScript and TypeScript
Ability to write User Stories and work within Agile teams
Experience with full SDLC development
Must pass HireRight background check and drug screening
Resume must clearly list current Phoenix, AZ location


Nice to Have Skills & Experience

Healthcare systems or healthcare development experience (HUGE plus)
Cybersecurity experience or security-focused development exposure
EDI Transactions experience
DevOps / CI-CD experience
GitHub version control experience
Agile/Scrum environment experience
Bootstrap frontend experience
Advanced SSIS knowledge
Performance tuning (concurrency & latency optimization)


Benefit packages for this role will start on the 1st day of employment and include medical, dental, and vision insurance, as well as HSA, FSA, and DCFSA account options, and 401k retirement account access with employer matching. Employees in this role are also entitled to paid sick leave and/or other paid time off as provided by applicable law.