Senior .Net Developer

General Info: US Citizens or GC Holders onlyMust be on our W2- no C2CMust be local to St Louis, MO- Onsite 5 days a week (63141)Overview: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.NETBuild, optimize, and tune SQL Server databases — T-SQL, stored procedures, views, performance tuningSupport and enhance existing web applications and internal toolsTranslate business requirements into clean, maintainable technical solutionsTroubleshoot, debug, and resolve production issues across the stackIntegrate with internal systems and third-party APIs as neededWhere applicable, support or extend Dynamics GP customizations, integrations, or reportingRequired: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 optimizationFull SDLC experience — requirements, design, development, testing, deploymentStrong communication skills; comfortable with technical and non-technical stakeholdersAble to work fully onsite in St. Louis, MOPreferred:Microsoft Dynamics GP (Great Plains) — customizations, integrations, or reportingASP.NET MVC, Web API, or .NET CoreFront-end familiarity (JavaScript, jQuery, Bootstrap, Razor)Source control with Git, TFS, or Azure DevOpsReporting tools — SSRS, Crystal Reports, or Power BI