.NET / C# Developer
Posted 12 May 2026
Advertised as “.NET / C# Developer – Senior (Top Secret with agreement to obtain CI Poly)”
BranchFactor Summary
The original posting with the fluff stripped out
- Expected experience
- 8+ yrs
- Management level
- People management
No salary listed for this role.
CertificationsDoD 8140.03 IAT Level II
This job requires active TS/SCI clearance with a CI Polygraph. Please apply only if you have an active TS/SCI clearance with a CI Polygraph.
.NET / C# Developer – Senior
Position / LCAT: .NET / C# Developer Level: Senior Lead Designation: N/A Location: Fort Belvoir, VA
Role Summary
Provides application development for a Microsoft-oriented enterprise environment, including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development, in support of custom in-house developed web applications. Develops, tests, and deploys software within a DEVSECOPS operating environment across multiple supported networks, adhering to Agile, SCRUM, and Lean methodologies. Collaborates with peers to review code, ensures best practices and coding standards are followed, and uses Azure DevOps for code changes and version controls.
Responsibilities
- Provide application development for a Microsoft-oriented enterprise environment, including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development
- Collaborate with peers to review code to ensure best practices, team norms, and coding standards are followed
- Provide web development and version control for a Microsoft-oriented enterprise environment using Government-provided tools (Microsoft Visual Studio 2019 and later, Azure DevOps and later)
- Estimate the level of effort required for all design, development, deployment, and testing and provide information to the COR
- Participate in an iterative development team through all facets, including sprint planning, daily scrum meetings, reviews, and retrospectives
- Develop documentation including test plans, end-user documentation, wireframes, mockups, Use Case Diagrams, and flowcharts; store all documentation in identified Government document repositories
- Use Azure DevOps (ADO) for all code changes and version controls
- Create and update test plans and record results within developer documentation
- Collaborate with the Quality Assurance (QA) team to mitigate all findings identified during testing
- Build fully deployable packages for development, staging, integration, and production environments and submit deployment requests for approval
- Use all approved Government-provided templates for required documentation and ensure all development-related documents are stored in a single document repository
- Leverage advanced programming skills to develop and incorporate mandatory fields of the DNI Audit.XML specification in accordance with ICS-500-27 Collection and Sharing of Audit Data