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

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.