Senior .NET Developer (C#) , Phoenix, AZ (Hybrid)

Location: Phoenix, AZ 85007 , Hybrid (local Phoenix only)

Type: Contract (18 months) | Start: Tentative, pending interviews/onboarding

About the Role

SunSoft Online is seeking a Senior .NET Developer for a contract opportunity with an Arizona state agency. You'll design, build, test, and debug web applications for business systems, working full life-cycle development with strong SQL and modern .NET/React front-end skills. This is a hybrid role: onsite as needed during the first 3 months for training/ramp-up, then typically once a week or less.

Key Responsibilities

Design, code, test, debug, and document web applications using full life-cycle development
Write and optimize complex SQL (T-SQL tuning, refactoring, performance)
Conduct unit testing and prepare test data to meet specifications
Analyze automation requests; create work plans, schedules, and time/cost estimates
Produce technical documents (technical specs, design docs)
Interface with users for enhancements, maintenance, and problem resolution
Prepare project status reports and attend technical meetings

Required

5+ years of .NET / C# experience
SQL expert (T-SQL optimization, refactoring, performance tuning)
Experience writing user stories

Preferred

EDI transactions, DevOps, GitHub, Agile, Bootstrap

Key Skills

Expert C#/.NET, Visual Studio, ASP.NET 4.0+, .NET Core, Entity Framework, Web Services, Expert SQL Server / T-SQL, SSIS, JavaScript, Bootstrap, React (hooks, Redux/Context API), TypeScript, RESTful API integration

Additional Details

Local to Phoenix only (current location must be on resume)
Available for an in-person interview within one week
Able to start within two weeks of an offer
HireRight background check and drug screening

To apply, submit your resume with your current city and state listed.

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