Senior .NET Developer (C#) , Phoenix, AZ (Hybrid)
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
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.
Skills Required
- 5+ years .NET / C# experience
- SQL expert (T-SQL optimization, refactoring, performance tuning)
- Experience writing user stories
- Local to Phoenix (current city and state must be listed on resume)
- Available for an in-person interview within one week
- Able to start within two weeks of an offer
- Willing to undergo HireRight background check and drug screening
- Hybrid role: onsite as needed first 3 months for training, then typically once weekly or less
- EDI transactions
- DevOps
- GitHub
- Agile methodology experience
- Bootstrap
- React (hooks, Redux/Context API)
- TypeScript
- SSIS
- Visual Studio
- ASP.NET 4.0+ and .NET Core
- Entity Framework
- Web Services / RESTful API integration
- JavaScript
What We Do
SunSoft Online is a US-operated IT consulting and technology services company that has been delivering solutions since 2006. The firm specializes in IT consulting, project delivery, and workforce support, focusing on placing highly qualified IT professionals—such as security engineers and product managers—with Arizona state agencies, government clients, and enterprise organizations across the United States.
