Join our community

Westminster • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Westminster • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Westminster • 50 milesRemote · Hybrid · Onsite · Field · All Environments

Westminster • 50 milesRemote · Hybrid · Onsite · Field · All Environments

270 net c developer jobs at 137 companies in Westminster, MD

1mo

Save

Mark Applied

Hide

1mo

C#/.NET Developer

Washington, District of Columbia, United States

$151k-$156k/yr OnsiteFull Time

E-INFOSOL

E-INFOSOL: Provides secure cloud and cybersecurity solutions for government agencies.

8+ YOEActive Top-Secret clearance, Bachelor’s in IT, minimum 8 years experience with 3–5 years using C#/.NET; experience with ASP.NET, Entity Framework, Microsoft SQL Server, REST/RPC, Git/GitLab, unit/integration testing, and secure coding practices.

C#, .NET, ASP.NET, Entity Framework, Microsoft SQL Server, REST, RPC, Git, GitLab, AWS, Azure, Docker, CI/CD

Job Posting View all

1mo

Save

Mark Applied

Hide

1mo

C# / .Net Developer

Washington, District of Columbia, United States

$125k-$155k/yr OnsiteFull Time

Synergy ECP

Synergy ECP: Provides cybersecurity and systems engineering for defense agencies.

8+ YOEBachelor's degree and 8+ years software engineering experience; 3–5 years with C#/.NET, ASP.NET, Entity Framework, and Microsoft SQL Server; experience with REST/RPC, unit/integration testing, secure coding; active TS/SCI clearance and U.S. citizenship required.

C#, .NET, ASP.NET, Entity Framework, Microsoft SQL Server, Git, GitLab, Docker, AWS, Azure, REST, RPC, CI/CD

Job Posting View all

1mo

Save

Mark Applied

Hide

1mo

Cleared C# / .NET Developer

Washington, District of Columbia, United States

$91k-$185k/yr OnsiteFull Time

Accenture Federal Services

Accenture Federal ServicesNYSE: ACN: Provides technology and consulting services to U.S. federal agencies.

3+ YOEBachelor's degree with 3+ years developing software using C#/.NET, ASP.NET, Entity Framework, and SQL Server; unit testing, secure coding, Git/GitLab; active Top Secret clearance and US citizenship; onsite Washington, DC.

C#, ASP.NET, Entity Framework, SQL Server, REST, RPC, Git, GitLab, AWS, Azure, Docker, CI/CD

Job Posting View all

1mo

Save

Mark Applied

Hide

1mo

.NET C# Developer

Washington, District of Columbia, United States

$145k-$151k/yr OnsiteFull Time

Cayuse Holdings

Cayuse Holdings: Tribally-owned provider of IT and professional services.

3+ YOE3+ years C#/.NET experience, ASP.NET, Entity Framework, SQL Server; Bachelor's degree preferred or 8+ years experience; active Top Secret clearance; unit/integration testing and secure coding experience.

C#, .NET, ASP.NET, Entity Framework, SQL Server, REST, RPC, Git, GitLab, Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Acrobat, Azure, AWS, Jira, Azure DevOps

Job Posting View all

2mo

Save

Mark Applied

Hide

2mo

.NET Developer

Arlington, Virginia, United States

$104k-$218k/yr OnsiteFull Time

CACI International

CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.

5+ YOE5–7 years software development experience, active Secret clearance, Bachelor's in CS/related (or equivalent), proficiency in C#, .NET/ASP.NET/.NET Core, React, Razor, Microsoft SQL Server, REST, and Git; strong troubleshooting and communication skills.

C#, .NET, ASP.NET, .NET Core, React, Razor Pages, Razor Views, Microsoft SQL Server, RESTful API, Git, Microsoft Azure DevOps, Entity Framework, TypeScript

Job Posting View all

3mo

Save

Mark Applied

Hide

3mo

.NET Developer (TSC)

Arlington, Virginia, United States

OnsiteFull Time

Prime Source Technologies

Prime Source Technologies: Provides IT solutions, software development, and systems integration services.

3+ YOE2+ years in software development; 3+ years with .NET (C#, ASP.NET, SQL Server, Web Forms); bachelor's or master's degree; secret or top secret clearance; Git/Jenkins; Agile/JIRA preferred.

.NET, C#, ASP.NET, SQL Server, Web Forms, Git, Jenkins, JIRA

Job Posting View all

3w

Save

Mark Applied

Hide

3w

Jr. Net, C#, SQL Developer - Active Top Secret required

Washington, District of Columbia, United States

$74k-$92k/yr OnsiteFull Time

General Dynamics Information Technology

General Dynamics Information TechnologyNYSE: GD: Provides mission-critical IT services to government and defense organizations.

3+ YOEActive Top Secret with SCI eligibility, US citizenship, 3+ years related experience (2+ years software development), Bachelor's in CS/Engineering or equivalent, CompTIA Security+, development experience with Microsoft .NET, C#, SQL, JS, HTML, and strong written communication.

Microsoft .NET, C#, SQL, JS, HTML, CompTIA Security+

Job Posting View all

5d

Save

Mark Applied

Hide

5d

.Net Applications Developer

Washington, District of Columbia, United States

HybridFull Time

AVER

AVER: Provides data analytics and IT services for federal agencies

5+ YOE5+ years .NET application development experience with C#, .NET Core/.NET 6+, Azure DevOps/GitHub Actions, EF Core, SQL/Oracle, REST APIs, and secure authentication; bachelor’s degree or equivalent experience.

Microsoft C# (.Net CORE), Microsoft .NET 6, Microsoft .NET Framework 4.8, Microsoft Azure DevOps, GitHub Actions, Azure App Services, Azure Functions, Azure API Management, Azure Storage, Azure Key Vault, Entity Framework Core (EF Core), SQL Server, Oracle, MVC, MVVM, jQuery, AJAX, Telerik Kendo UI, RESTful Web Services, Windows Services, ASP.NET Core, Entra ID (formerly Azure Active Directory), SAML, OAuth 2.0, OpenID Connect, JSON Web Tokens (JWT), Microsoft Visual Studio 2022, Azure Logic Apps, Event Grid, Cosmos DB, GraphQL

Job Posting View all

5d

Save

Mark Applied

Hide

5d

.NET Developer, Mid-level

Washington, District of Columbia, United States

HybridFull Time

Andworx

Andworx: Delivers digital transformation and IT solutions for federal agencies.

3+ YOE3+ years developing enterprise .NET applications; experience with ASP.NET,.NET Core,C#,MVC,Entity Framework,REST/SOAP integrations,Oracle,Agile; US citizenship and ability to obtain Position of Trust.

ASP.NET, .NET Core, C#, MVC, MVVM, Entity Framework, Azure DevOps, REST, SOAP, JSON, XML, Oracle

Job Posting View all

3w

Save

Mark Applied

Hide

3w

Jr. Net, C#, SQL Developer - Active Top Secret required

Washington, District of Columbia, United States

$74k-$92k/yr OnsiteFull Time

GDIT

GDITNYSE: GD: Delivers IT and mission services to government agencies.

3+ YOEActive Top Secret/SCI clearance, US citizenship, 3+ years related experience (2+ in software development), Bachelor’s degree or equivalent, CompTIA Security+, experience with Microsoft .NET, C#, SQL, JS, HTML, and strong written communication.

Microsoft .NET, C#, SQL, JS, HTML

Job Posting View all

1mo

Save

Mark Applied

Hide

1mo

.NET Software Engineer

McLean, Virginia, United States

$69k-$158k/yr RemoteFull Time

Booz Allen Hamilton

Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.

2+ YOE2+ years .NET, C#, Web API; Docker; Agile; requirements gathering; Secret clearance; Bachelor's degree.

.NET, C#, Web API, Docker, Agile Methodology, Jenkins, GitHub Actions, Azure DevOps

Job Posting View all

2d

Save

Mark Applied

Hide

2d

Senior .NET Developer

Rockville or United States

HybridContract

eTelligent Group

eTelligent Group: Providing IT modernization and cybersecurity solutions for federal government agencies.

US citizen required. Proficient in .NET Core/.NET 8, C#, Azure services, API security, Microsoft Entra ID/B2C, Azure OpenAI/Azure AI Foundry, GitHub Copilot, CI/CD, containers, SQL/Cosmos DB, and modern UI frameworks.

.NET Core, .NET 8, C#, Azure, App Services, Functions, API Management, Service Bus, Azure SQL, Azure OpenAI, Azure AI Foundry, GitHub Copilot, GitHub, Azure DevOps, CI/CD, Cosmos DB, Blazor, React, Angular, Microsoft Entra ID/B2C

Job Posting View all

2mo

Save

Mark Applied

Hide

2mo

.NET Developer

Arlington, Virginia, United States

$104k-$218k/yr HybridFull Time

CACI

CACINYSE: CACI: Provides information technology and professional services to government clients.

5+ YOE5–7 years software development experience; active Secret clearance; BS in CS/SE/IT; strong C#, .NET, React; SQL Server; REST APIs; Git; independent; good communication.

C#, ASP.NET, .NET Core, React, Razor Pages, Razor Views, SQL Server, REST, Git

Job Posting View all

2w

Save

Mark Applied

Hide

2w

Software Engineer (C#/.NET)

Arlington, Virginia, United States

$108k-$154k/yr HybridFull Time

CoStar Group

CoStar GroupNASDAQ: CSGP: Global provider of commercial and residential real estate data.

3+ YOEBachelor's degree, 3+ years C#/.NET development, experience with cloud platforms (AWS/Azure), RESTful services, SQL, distributed systems, monitoring/telemetry, and familiarity with LLMs or agent architectures.

C#, .NET Framework, SQL Server, SQL, AWS, Web API, RESTful web services, ASP.NET MVC, large language models (LLMs), AWS Lambda, Amazon DynamoDB, Amazon SQS

Job Posting View all

2w

Save

Mark Applied

Hide

2w

Software Engineer (C#/.NET)

Arlington, Virginia, United States

$108k-$154k/yr HybridFull Time

CoStar Group

CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.

3+ YOEBachelor's degree,3+ years .NET (C#) development,cloud experience (AWS/Azure),REST/ASP.NET MVC,data modeling,monitoring/telemetry,LLM familiarity and strong communication skills.

C#, .NET Framework, SQL Server, AWS, Azure, Web API, ASP.NET MVC, Lambda, DynamoDB, SQS, Large language models (LLMs)

Job Posting View all

4d

Save

Mark Applied

Hide

4d

Senior .Net Developer with Azure/Angular

Washington, District of Columbia, United States

$68k-$140k/yr OnsiteFull Time

Cognizant

CognizantNasdaq: CTSH: Provides global information technology and business process outsourcing services.

10+ YOE10+ years .NET development experience with .NET Core, C#/VB.NET, SQL Server, Azure platform and Angular; strong DevOps, microservices, containerization, security and performance tuning skills.

.NET Core, C#, VB.NET, ADO.Net, Entity Framework, Microsoft SQL Server, SQL Server Reporting Services (SSRS), Docker, Microservices, Azure Functions, FunctionApp, Web Jobs, Storage Account, Key Vault, App Insights, Cognitive Service, Service Bus, Azure AD, Azure BOT Service, Azure Open AI, Data Factory, Azure Event Grid, Azure Event Hubs, Angular 9+, HTML5, CSS 3, Bootstrap, Material, JavaScript, TypeScript, RXJS, HighCharts, AG Grids, GIT, NPM, Angular cli

Job Posting View all

1mo

Save

Mark Applied

Hide

1mo

.NET Software Developer, Junior

Arlington, Virginia, United States

$90k-$110k/yr OnsiteFull Time

TIAG

TIAG: Technology and management solutions provider for government and industry.

2+ YOEActive Secret clearance, CompTIA Security+ and CE certifications, 2+ years developing with Microsoft .NET (C#, ASP.NET, .NET Core), experience with HTML/CSS/JavaScript and relational databases, bachelor's degree or equivalent.

C#, ASP.NET, .NET Core, HTML, CSS, JavaScript, Microsoft SQL Server, Oracle, PostgreSQL, Azure DevOps, Git, Jira

Job Posting View all

3d

Save

Mark Applied

Hide

3d

Senior .NET Developer – Azure & AI Solutions

Rockville, Maryland, United States

OnsiteFull Time

ASSYST

ASSYST: An IT firm that provides digital transformation, DevSecOps, cybersecurity, and AI integration services for government agencies.

Expert C#, ASP.NET Core, .NET 8/.NET Core, Azure and AI solution experience including Azure OpenAI, RAG, AI Agents, CI/CD, and modernizing legacy .NET apps.

.NET 8, .NET Core, C#, ASP.NET Core, Microsoft Azure, Azure App Services, Azure Functions, API Management, Service Bus, Azure SQL, Azure OpenAI, Azure AI Foundry, AI Agents, Retrieval-Augmented Generation (RAG), GitHub Copilot for Developers, Microsoft Entra ID/B2C, GitHub, Azure DevOps, SQL, Cosmos DB, Blazor, React, Angular

Job Posting View all

2w

Save

Mark Applied

Hide

2w

.NET Services Engineer

McLean or United States

RemoteFull Time

Aretum

Aretum: Provides technology-enabled mission support services for federal government agencies.

8+ YOE8+ years software development experience with ASP.NET/Core and C#; experience with GraphQL, PostgreSQL, EFCore, Azure, Kubernetes, Azure DevOps, and unit testing; U.S. citizenship and Public Trust eligibility required.

C#, .NET, ASP.NET Core, Entity Framework Core (EFCore), PostgreSQL, GraphQL, Azure, AKS, Azure Pipelines, Azure Key Vault, Kubernetes, Helm, Open Telemetry, Azure DevOps (ADO), Git

Job Posting View all

1d

Save

Mark Applied

Hide

1d

Senior .Net Application Developer

Arlington or Merrifield

OnsiteFull Time

ASRC Federal

ASRC Federal: Provides engineering and IT services to federal government agencies.

10+ YOERequire U.S. citizenship and active Secret clearance; 10+ years software development including 8+ years ASP.NET C# MVC, 5+ years .NET Core, Agile experience, EMR not mentioned; strong SQL, XML, and frontend skills.

ASP.NET, C#, LINQ, MVC, Entity Framework, Unity, Visual Studio 2010, Visual Studio 2017, Team Foundation Server, ReSharper, SharePoint, NHibernate, jQuery, JavaScript, AJAX, HTML, CSS, Oracle, SQL Server, T4 templates, Classic ASP, Concorde, XML

Job Posting View all