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66 net core developer jobs at 42 companies in Ashburn, VA

2mo
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.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
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1mo
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Senior Engineer – .NET
Bethesda, Maryland, United States
$151k-$184k/yr HybridFull Time
GEICO
GEICO: Provides vehicle and property insurance services to consumers.
4+ YOEBachelor's in CS or related, 4+ years .NET software development experience, 2 years architecture/design and DevOps/Azure experience, proficiency with Azure DevOps, cloud engineering, .NET Core/ASP.NET, Angular/Express; occasional on-call and background check.
Scrum, Kanban, SAFe, .NET, .NET Core, ASP.NET, Angular, Express, Azure DevOps, Azure Network, DevOps
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3mo
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Senior .NET Developer
Vienna, Virginia, United States
HybridFull Time
Prime Source Technologies
Prime Source Technologies: Provides IT solutions, software development, and systems integration services.
10+ YOE10+ years of software development experience with 3+ years in .NET Core; expert in C#, ASP.NET Core, EF Core, and LINQ; cloud experience (Azure); microservices and containerization; REST/GraphQL APIs; CI/CD; unit tests; secure coding.
C#, ASP.NET Core, NET Core, Entity Framework Core, LINQ, Docker, Kubernetes, Azure, Azure DevOps, GitHub Actions, SQL Server, T-SQL, Azure Service Bus, RabbitMQ, Kafka, Blazor, Razor Pages, GraphQL, REST, OIDC, Identity Server, Azure AD
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1w
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.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
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1w
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.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
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1mo
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Sr. .Net Developer II (6661)
Washington, District of Columbia, United States
$147k-$161k/yr HybridFull Time
MetroStar
MetroStar: Provides digital transformation and IT services to government agencies.
8+ YOE8+ years .NET development experience (C#, ASP.NET MVC/Core), React, Node.js, Power Platform, MS SQL, CI/CD and Git; active Secret clearance; local to DMV; bachelor\u0002s in CS or equivalent experience.
.NET, C#, ASP.NET MVC, ASP.NET Core, React, Node.js, GitHub Copilot, OpenAI Codex, Microsoft Power Platform, Microsoft Power Apps, Microsoft Power Automate, Microsoft Power BI, Microsoft Dataverse, Microsoft SharePoint, SharePoint (2013 or newer), MS SQL, Entity Framework, RESTful API, CI/CD, Git, Microsoft 365, Microsoft Teams, Microsoft Outlook, Microsoft Excel, Microsoft Word, Microsoft OneDrive
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1w
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Senior .Net Developer #1824528
Alexandria, Virginia, United States
$135k-$160k/yr OnsiteFull Time
Network Designs, Inc.
Network Designs, Inc.: Provides IT, network, and cybersecurity solutions to government agencies.
10+ YOEU.S. citizen able to obtain Public Trust, 10+ years experience, advanced C#, .NET, ASP.NET Core, Angular, Microsoft SQL Server, RESTful API and web application development.
C#, .NET Core, .NET 6, ASP.NET Core, Angular, TypeScript, HTML, CSS, JavaScript, Entity Framework, Entity Framework Core, Microsoft SQL Server, Git, Microsoft Azure, Microsoft Azure App Services, Azure Functions, Azure SQL, Microsoft Azure DevOps, GitHub, Docker, Kubernetes, xUnit, NUnit, Jasmine, Karma, Cypress, Jenkins, GitHub Actions
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1w
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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
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1w
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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
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1w
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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
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1mo
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.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
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1w
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Sr. Backend Engineer (.NET Core)
Washington or Falls Church
RemoteFull Time
Data Society Group
Data Society Group: Provides data science training and AI solutions for organizations.
6+ YOE6+ years backend development with 4+ years .NET Core/C#, experience leading offshore teams, Azure SQL, Azure Service Bus, Azure API Management, CI/CD with Azure DevOps and Veracode, API and microservices design.
.NET Core, C#, Azure SQL, Azure Service Bus, Azure API Management (APIM), Azure DevOps, Veracode, React, Oracle Fusion Cloud, Claude Code, GitHub Copilot, Cursor
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3w
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.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
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6d
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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
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1mo
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Senior .NET Software Developer
Austin or Alexandria or United States
$110k-$140k/yr RemoteFull Time
Advanced Solutions International
Advanced Solutions International: Cloud software for association and non-profit management.
8+ YOE8+ years building web applications; bachelor’s degree in CS or equivalent experience; strong C#, .NET Core, .NET MVC, Entity Framework, Microsoft SQL/Azure SQL, Visual Studio; experience with performance testing and Azure observability.
C#, .NET Core, .NET MVC, Entity Framework Core, Microsoft SQL Server, Azure SQL, Visual Studio, Java 8, Spring, Hibernate, TypeScript, NodeJS, Postgres, MySQL, JMeter, WAPT, Azure Application Insights, Azure App Service, Azure Containers, .NET Aspire, Microsoft Web Forms, Web API, Microsoft .NET Framework, AngularJS, SAFe
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1mo
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AWS Senior .NET Modernization Engineer
Baltimore, Maryland, United States
OnsiteFull Time
Aligned Technology Group
Aligned Technology Group: Provides AWS-focused cloud consulting and managed technology services.
5+ YOE5+ years with C# and .NET; experience with .NET Framework and .NET Core/.NET 8; modernizing legacy enterprise applications; REST APIs, SQL Server, Git, Agile; strong communication and problem-solving.
.NET Framework, .NET Core, .NET 8, C#, ASP.NET, Docker, Kubernetes, Amazon EKS, SQL Server, Git, Terraform, CloudFormation, AWS CDK, AWS
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1d
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.NET Team Lead
Arlington or Fairfax
$150k-$165k/yr OnsiteFull Time
Amatriot Group
Amatriot Group: Provides IT consulting and mission-critical technology support services.
15+ YOE15+ years web development experience, 5+ years .NET Core/.NET Standard, active Secret clearance, bachelor’s degree, strong C#, JavaScript, ASP.NET MVC, SQL, XML, TFS, and Agile experience.
C#, JavaScript, CSS, SQL, XML, Team Foundation Server, Visual Studio 2017, ASP.NET MVC, .NET Core, .NET Standard, OpenStreetMap
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3w
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26-2285: .Net Developer - Baltimore, MD
Baltimore, Maryland, United States
$70k-$100k/yr OnsiteFull Time
Navitas Business Consulting
Navitas Business Consulting: Provides digital transformation and IT solutions for government agencies.
5+ YOEBachelor's in CS/Engineering, 5+ years software engineering with expert .NET Core and C#, AWS and SQL/data warehousing experience, ability to lead architecture and mentor staff.
.NET Core, C#, Azure, AWS, SQL, Microsoft Excel
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6d
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Senior Full Stack .Net Developer
Flexwork or Virginia
RemoteFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
10+ YOEBachelor's in computer science, 10+ years software development, US citizenship for Public Trust, expertise in .NET Core, Angular, Razor, Azure, REST/SOAP, MS SQL, OAuth2/OpenID Connect/JWT, Azure DevOps, and scripting (bash, python, PowerShell).
Microsoft .NET, .Net Core, Angular, Razor, OAuth 2.0, OpenID Connect, JWT, REST, SOAP, XML, JSON, Azure Services, MS SQL Server, Azure DevOps, GIT, Visual Studio, bash, python, PowerShell, CI/CD
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1w
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Sr. NET Developer /AI Developer – Rockville, MD
Rockville, Maryland, United States
OnsiteContract
Creative Information Technology
Creative Information Technology: Provides IT solutions and software for government and healthcare sectors.
.NET Core/.NET 8 and C# expertise, strong Azure experience (App Services, Functions, Service Bus, Azure SQL), Azure OpenAI/AI Foundry experience, GitHub/GitHub Copilot or Azure DevOps, CI/CD, containers, SQL/Cosmos DB, modern UI frameworks, security and authentication.
.NET Core, .NET 8, C#, Microsoft Azure, App Services, Functions, API Management, Service Bus, Azure SQL, Azure OpenAI, AI Foundry, GitHub Copilot for Developers, ASP.NET Core, Microsoft Entra ID, B2C, GitHub, Azure DevOps, CI/CD, Blazor, React, Angular, Cosmos DB, SQL
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