Senior Dotnet Developer

Position: Senior Application Developer

Location: Harrisburg, PA (Remote)

#W2-CONTRACT ROLE only *********************(NO C2C or 1099)

#Need only local candidates to Pennsylvania.

Key Responsibilities:

• Develop and support large-scale, mission-critical enterprise applications
• Ensure a highly stable, scalable, and supportable system environment
• Assess and improve network, compute, and security operations
• Plan and manage system capacity based on evolving enterprise needs
• Identify risks, troubleshoot complex issues, and provide end-to-end solutions
• Develop standards, policies, and operational processes
• Maintain architecture, infrastructure, and troubleshooting documentation
• Build KPIs, dashboards, and executive-level reports
• Collaborate with internal teams, vendors, and external agencies

Technical Expertise Required:

• Strong experience with .NET Framework (1.1–4.6.x), .NET Core, ASP.NET, and C#
• Hands-on experience with WCF Web Services, Web API, and MS SQL Server
• Proficiency in Object-Oriented Design and Development
• Experience with Visual Studio and TFS (build & deployment processes)
• Solid understanding of enterprise architecture and solution management

NIEM / XML Expertise (Highly Preferred):

• Expert-level experience with XML Schema (XSD) and NIEM standards
• Strong knowledge of XSLT 2.0/3.0 and XPath for data transformation
• Experience using tools like Altova XMLSpy
• Experience in IEPD lifecycle management
• ESB migration and integration with SOAP/REST services
• XML namespace and versioning management

Required Experience:

• 4-year college degree
• 5 years: .NET, ASP.NET, C#, WCF, SQL Server, Visual Studio
• 2 years: .NET Core, Web API
• 3 years: NIEM/IEPD, ESB migration, namespace management
• 6 years: Full SDLC (development, testing, deployment, maintenance)
• 5 years: Technical documentation
• Willingness to provide after-hours support

Nice to Have:

• Experience with Microsoft Azure