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

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