US Citizens or GC Holders only - Direct-Hire Local candidates only Onsite- 4-5 days per week
We're hiring a mid-to-senior .NET Developer for an onsite contract role in St. Louis. The right candidate is comfortable across the full Microsoft stack — .NET, SQL Server, and ASP.NET — and can plug into an existing environment and contribute quickly. Experience with Microsoft Dynamics GP (Great Plains) is a strong plus but not required.Responsibilities:
Design, develop, and maintain applications using .NET, C#, and ASP.NET
Build, optimize, and tune SQL Server databases — T-SQL, stored procedures, views, performance tuning
Support and enhance existing web applications and internal tools
Translate business requirements into clean, maintainable technical solutions
Troubleshoot, debug, and resolve production issues across the stack
Integrate with internal systems and third-party APIs as needed
Where applicable, support or extend Dynamics GP customizations, integrations, or reporting
Required:
5+ years of professional .NET development (.NET Framework and/or .NET Core)
Strong C# and ASP.NET (Web Forms and/or MVC)
Solid SQL Server experience — T-SQL, stored procedures, query optimization
Full SDLC experience — requirements, design, development, testing, deployment
Strong communication skills; comfortable with technical and non-technical stakeholders
Able to work fully onsite in St. Louis, MO
Preferred:
Microsoft Dynamics GP (Great Plains) — customizations, integrations, or reporting