Remote Asp Net Core Developer Jobs in Washington, DC

Opportunity Overview
Northramp is seeking a skilled Software Developer to support a suite of ASP.NET MVC web applications serving federal clients. You will work across the full stack - building features, maintaining existing functionality, and contributing to ongoing platform modernization efforts. This role sits within Northramp's Federal Practice and offers direct engagement with agency stakeholders throughout the development lifecycle.
We value developers who write clean, well-tested code and bring intellectual curiosity to complex problems. Familiarity with every technology listed below is not required - what matters most is a track record of learning quickly, delivering reliably, and caring about quality.
The Ideal Candidate
You embrace SOLID Object-Oriented design principles, vertical slice architecture, and Test-Driven Development. You are comfortable engaging directly with federal clients to gather requirements, provide demos, and offer support - and you can translate technical concepts clearly for non-technical stakeholders. You take ownership of your work, hold a high bar for quality, and thrive in a collaborative, client-facing consulting environment.
Key Responsibilities
• Design, develop, and maintain ASP.NET MVC and ASP.NET Core web applications supporting federal programs.
• Engage directly with federal clients to gather requirements, deliver demos, and provide ongoing technical support.
• Implement features and integrations using vertical slice architecture and TDD practices.
• Contribute to the migration of legacy .NET Framework applications to modern .NET.
• Configure and support CI/CD pipelines using GitHub Actions and Azure DevOps tooling.
• Participate in code reviews, uphold engineering standards, and mentor peers.
• Work with database systems (SQL Server / T-SQL) including schema changes and migration tooling.
• Support front-end development efforts, including Blazor migration work.
Technical Skills & Tools
The ideal candidate will have some experience across several of the following areas. Depth in every category is not expected.
Backend
• C# / ASP.NET MVC / ASP.NET Core
• .NET (modern) and .NET Framework migration experience
• LINQ, NHibernate / Entity Framework Core
• MediatR and vertical slice architecture
• FluentValidation
• Microsoft SQL Server / T-SQL
• Database migration tooling (e.g., RoundHousE, Flyway, EF Migrations)
• SignalR
Frontend
• Blazor (Server or WebAssembly) - priority given planned migration
• JavaScript / TypeScript
• Front-end frameworks (React, Angular, Vue)
• jQuery (legacy support)
• CSS / SASS, Twitter Bootstrap / Material Design
• AJAX
DevOps & Cloud
• Git / GitHub
• GitHub Actions (CI/CD)
• Azure (App Services, Application Insights, Easy Auth)
• CI/CD pipeline configuration
Practices & Methodology
• Agile Software Development
• Test Driven Development (TDD)
• SOLID / Object-Oriented design principles
• Automated testing with Playwright
Emerging Technologies
• AI coding agent experience (e.g., GitHub Copilot, Claude Code, Cursor)
• AI/ML integration experience (e.g., Azure OpenAI, Semantic Kernel)
Requirements
Required Qualifications
• U.S. Citizenship and the ability to successfully pass a federal background investigation.
• Bachelor's degree.
• 5+ years of .NET / SQL Server software development experience.
• Strong communication and interpersonal skills; comfortable engaging directly with clients and stakeholders.
Desired Qualifications
• Experience migrating legacy .NET Framework applications to modern .NET.
• Proficiency with Blazor or modern component-based frontend frameworks.
• Experience configuring CI/CD pipelines, particularly with GitHub Actions.
• Familiarity with StructureMap or similar IoC containers.
• Experience with SSRS or similar reporting tools.
• Experience writing automated tests using Playwright.
• Experience with UI/UX design.
• Comfort working alongside or directing AI coding agents to accelerate development.
• AI/ML development experience, particularly with Azure AI services or LLM integration.
• Experience working in a client-facing or consulting environment.
Clearance
A Public Trust clearance is required for this role. Applicants selected will be subject to a security investigation and may need to meet eligibility requirements for access to classified information.
About Northramp
Northramp is a federal consulting firm that helps agencies modernize and operate mission-critical systems with sound judgment, disciplined execution, and deep federal experience. We specialize in high-stakes digital transformation in highly regulated environments where failure is not an option. Our integrated delivery model brings engineers and advisors together as one team, combining technical depth with an operator's mindset to move organizations from strategy to execution with confidence.
We hold high standards because our clients' missions demand it, and we support our people in meeting them. Northramp is where you are challenged, trusted, and supported - a place for people who take pride in their work, value clarity and follow-through, and want to make a meaningful impact through technology.
Equal Opportunity
Northramp is an Equal Opportunity Employer. We are committed to creating an inclusive environment for all employees and applicants. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other characteristic protected by federal, state, or local law. Northramp participates in E-Verify.
Benefits

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k, IRA)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off (Vacation, Sick & Public Holidays)
• Family Leave (Maternity, Paternity)
• Short Term & Long Term Disability
• Training & Development
• Work From Home
• Wellness Resources
• Employee Bonus Programs