.NET / C# Developer – Senior (Top Secret with agreement to obtain CI Poly)
- Level
- Senior
Not stated in the posting: salary, work type, visa.
Open. First seen 2 October 2026.
About the role
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
- Adhere to software development methods including Agile, SCRUM, and Lean
- Provide project status reports to the Government at all stages of the project lifecycle as required
- Utilize Azure DevOps to record and report bugs to Quality Assurance, project managers, and other stakeholders
- Ensure SOPs, "How To" guides, testing plans, and accreditation paperwork are complete for each application
- Individuals not performing at a Government facility and not TS/SCI cleared shall write code in an unclassified environment and provide the code to contractor developers working at a Government facility with TS/SCI clearance for integration into integration and production environments
Required Qualifications
- Eight years of experience in .NET Development (including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development)
- Five years of experience with Software Development Life Cycle Process (SDLC)
- Five years of experience with software development Unit Testing, System Testing, Functional Testing, User Acceptance Testing, or other development testing experience
- Five years of experience in SQL database development stored procedures
- Five years of experience mentoring junior personnel on proper practices and procedures
- Five years of experience documenting software defects using a bug tracking system and reporting defects to software developers and project managers
- TS/SCI clearance with SBI and ability to attain SI, TK, G, HCS, and NATO Secret clearance
- DoD 8140.03 IAT Level II / Intermediate certification
Preferred Qualifications
- Experience with Agile, SCRUM, and Lean software development methodologies
- Experience using Microsoft Visual Studio 2019 and later, and Azure DevOps
North Point Technology's standard text
North Point Technology is THE BEST place to work for curious-minded engineers motivated to support our country’s most crucial missions! We focus on long term projects, leveraging the latest technology in support of innovative solutions to solve our customer’s most difficult problems.
At North Point Technology, EMPLOYEES come first! We value our employees by providing excellent compensation, benefits, and a flexible work-life balance. We strive for a close-knit and open atmosphere where the owners are always directly available to our team members.
North Point Technology's standard text
Come join us! Apply with North Point Technology today!
For positions requiring a federal security clearance, your clearance level must be clearly identified on your resume.
What this role asks for
93% of this description is written for the role. The rest is North Point Technology's standard text, folded away below.
Read against North Point Technology's other open postings on this site.
The team: Project IO
This role is one of 6 open in Project IO.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Agile (4 of 6), .NET (3 of 6), SharePoint (3 of 6), Windows Server (3 of 6), Azure (2 of 6), Azure DevOps (2 of 6), SQL (2 of 6)
OTHER ROLES ON THIS TEAM
- SharePoint Developer – Senior (Top Secret with agreement to obtain CI Poly) posted May 12
- Business Analyst / Requirements Engineer – Senior (Top Secret with agreement to obtain CI Poly) posted May 12
- Software Engineer / Quality Assurance Analyst – Senior (Top Secret with agreement to obtain CI Poly) posted May 12
- Microsoft System Administrator- Senior / Junior(Top Secret with agreement to obtain CI Poly) posted May 12
- Mission Data Engineer (Top Secret with agreement to obtain CI Poly) posted May 6
From the team and dates on North Point Technology's own job board.
Similar jobs
- Software Support Engineer, C#/.NET & SQL. at Blueprint Technologies
Shares 6 skills: Windows Server, Azure DevOps, .NET… · same country - Sr. .NET Developer at Aretum
Shares 6 skills: Azure DevOps, .NET, C#… · Senior level · same country - Senior Software Engineer - .NET / C# / XAML Digital Experience at Fidelity Investments
Shares 4 skills: Azure DevOps, .NET, C#… · Senior level · same country - Sr. Software Developer III (6873) at MetroStar
Shares 8 skills: Windows Server, Azure DevOps, .NET… · Senior level - C# Developer at Veeam Software
Shares 5 skills: Azure DevOps, .NET, C#… · same country - Cloud Engineer - Serverless & Identity (Top Secret/SCI Required) at North Point Technology
Also at this company
Is this your posting and you want it taken down? Email info@careerholo.com.