Senior Associate .NET Developer

Salary: $62,000 - 102,000 per year Requirements:

• 4–7+ years of experience in full-stack .NET development.
• Strong knowledge of C#, .NET Core, .NET Framework, Entity Framework, and .NET/MVC and object-oriented design.
• Front-end development experience with React, JavaScript or TypeScript, HTML, and CSS, with the ability to work across application layers.
• SQL Server experience, including stored procedures, query performance, and development, QA, staging, and production environments.
• Experience working with layered architecture, Git-based version control, and CI/CD pipelines such as GitHub Actions or Azure DevOps.
• Ability to diagnose and safely modify unfamiliar or partially documented code, with strong full-stack troubleshooting and root-cause analysis skills.
• Experience writing automated unit tests and developing, consuming, and troubleshooting RESTful APIs using C#/.NET.
• Ability to implement technical remediations for Section 508 and accessibility issues; familiarity with accessibility practices for federal web applications.
• Ability to work independently and collaborate with developers, QA, and database administrators; professional communication skills for client-facing work.
• Experience with Agile/Scrum methodologies.
• Eligibility for U.S. Government Public Trust clearance.
• U.S. citizenship is required.
• Experience with Active Directory group-based access control and authentication/authorization patterns.
• Experience maintaining and troubleshooting Sitecore-based .NET applications hosted in Azure, including supporting applications through decommissioning or transition.
• Exposure to Power Apps, Power Automate, or SharePoint Online.
• Experience integrating Azure OpenAI into a .NET or similar web application is a plus.
• Experience with Syncfusion or similar reporting and export component libraries.
• Experience with Serilog or other structured application logging and error-tracking practices.
• Familiarity with CQRS, Repository, and Dependency Injection patterns.
• Experience contributing to legacy modernization or decommissioning efforts and to test automation strategy or execution.
• Prior experience in federal or government contracting, particularly with NIH or HHS, and experience using Jira or a similar project management platform are valued.

• Partner with federal health clients on major digital engagement initiatives.
• Maintain mission-critical systems and support ongoing operations and maintenance.
• Design and build new capabilities that advance the mission of a large NIH institute.
• Investigate ambiguous, cross-cutting issues, diagnose root causes, and safely update existing code.
• Collaborate with developers, QA, database administrators, and clients as needed.

• .NET Framework
• Active Directory
• Azure
• C#
• CI/CD
• CQRS
• CSS
• DevOps
• Git
• GitHub
• Support
• JIRA
• JavaScript
• MVC
• React
• SQL
• SharePoint
• Sitecore
• TypeScript
• Web
• ASP.NET
• Cloud
• Backend
• Frontend

More:

We are hiring a Senior Associate .NET Developer for a full-time role in Arlington, Virginia, supporting federal health clients and a large NIH institute. We offer an inclusive, collaborative workplace, ongoing learning and development, competitive compensation and benefits, work-life flexibility, comprehensive health coverage for employees and their families, generous paid leave and holidays, and wellness and employee assistance programs.

last updated 40 week of 2026