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271 senior net software engineer jobs at 154 companies in Washington, DC

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Senior Software Engineer-.Net
Baltimore, Maryland, United States
$110k-$120k/yr HybridFull Time
InVita Healthcare Technologies
InVita Healthcare Technologies: Software for blood, donation, and forensic life-saving operations.
5+ YOEBachelor's degree and 5+ years .Net experience with WinForms, C# or VB.NET, SQL Server, Entity Framework; experience with GIT, Jira, Bitbucket; strong communication and troubleshooting skills.
.Net, WinForms, C#, VB.NET, SQL Server, Entity Framework, GIT, Jira, Bitbucket, DevExtreme, Infragistics, Telerik
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1d
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.NET Software Developer, Senior
Springfield, Virginia, United States
$87k-$182k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
15+ YOEActive TS/SCI clearance and 15+ years of government or DoD software development experience. Requires .NET expertise and leadership; bachelor's degree and listed tools or certifications preferred.
Microsoft .NET, C#, ASP.NET Core, .NET Framework, Blazor, Entity Framework, SQL Server, RESTful APIs, Azure DevOps, Git, Microsoft Azure, Agile, DevSecOps, CI/CD, Microsoft Certified: Azure Developer Associate, Azure Solutions Architect, Security+, Certified Scrum Developer
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1d
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.NET Software Developer, Senior
Springfield, Virginia, United States
$87k-$182k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
15+ YOEActive TS/SCI clearance and 15+ years of government or DoD software development experience required; .NET expertise and technical leadership required. Bachelor's degree and listed modern development tools preferred.
Microsoft .NET, C#, ASP.NET Core, .NET Framework, Blazor, Entity Framework, SQL Server, RESTful APIs, Azure DevOps, Git, Microsoft Azure, DevSecOps, CI/CD
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4w
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Senior .NET Software Engineer #1821117
Alexandria, Virginia, United States
$125k-$135k/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, BSc in Computer Science or related, 10+ years' software experience, advanced .NET/C#/ASP.NET expertise, Angular and SQL Server experience, Power Platform and Azure ASE knowledge, DevSecOps/CI/CD and testing experience.
.NET Framework, .NET, C#, ASP.NET, Angular, SQL Server, Microsoft Power Platform, Azure Application Service Environments (ASE), Windows Virtual Machine, IIS, DevSecOps, CI/CD, APIs
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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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Senior .NET Developer
United States or Washington
RemoteFull Time
Clearwaters.IT
Clearwaters.IT: Provides information technology services and solutions for federal agencies.
8+ YOEU.S. citizen or permanent resident able to obtain Public Trust clearance; 8+ years software development experience (or degree + experience). Strong .NET and Python skills, AWS/Azure, CI/CD, databases, and excellent English communication.
Step Functions, CloudWatch, RDS, Lambda, S3, SQS, SNS, Elastic Container Registry, .NET, Python, Network Load Balancer, Application Load Balancer, Web Application Firewall, DynamoDB, Kinesis Data Stream, Firehose, Java, JavaScript, C#, SQL, RBS, MongoDB, Docker, Kubernetes, GitHub Actions, GitLab CI/CD, GitHub Copilot, Git, Subversion, Jira, Microsoft Azure, Microsoft Office Suite
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2mo
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.NET Developer Senior
Arlington or Rosslyn
HybridFull Time
SAIC
SAICNASDAQ: SAIC: Provides government and defense clients with technology and engineering services.
7+ YOE7+ years software experience (Masters+7 or Bachelors+9, may accept experience in lieu), hands-on .NET development, SQL/Oracle DB integration, CI/CD (GitLab, Jenkins, Nexus), DevOps, deployment automation (Ansible), Okta/CyberArk integration, and Jira service management. US citizenship and active Secret clearance required.
.NET, SQL, Oracle, GitLab, Jenkins, Nexus, Okta, CyberArk, Ansible, IIS, Jira Service Management, SQL Developer, SQL Plus, Toad, SQL Server Management Studio
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2mo
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.NET Developer Senior
Arlington or Rosslyn
HybridFull Time
SAIC
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
7+ YOEUS citizen with active Secret clearance; 7+ years relevant experience (Masters+7 or Bachelors+9). Hands-on .NET development, Oracle/SQL integration, CI/CD (GitLab, Jenkins, Nexus), Ansible, Okta/CyberArk, IIS, and Jira experience; agile team experience.
.NET, Oracle, SQL Developer, SQL Plus, Toad, SQL Server Management Studio, Ansible, GitLab, Jenkins, Nexus, Okta, CyberArk, Jira Service Management, IIS
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3w
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Senior .NET Developer
Washington, District of Columbia, United States
HybridFull Time
Andworx
Andworx: Delivers digital transformation and IT solutions for federal agencies.
8+ YOE8+ years building enterprise .NET applications, experience with ASP.NET/.NET Core/.NET 6, C#, MVC/MVVM, Entity Framework, Oracle, REST/SOAP/JSON/XML, Agile; U.S. citizenship and ability to obtain a Position of Trust (public trust) clearance.
ASP.NET, .NET CORE, .NET 6, MVC, MVVM, Entity Framework, Oracle, Azure DevOps, C#, REST, SOAP, JSON, XML
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1mo
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Senior Software Engineer (C#/.NET)
Arlington, Virginia, United States
$143k-$187k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Global provider of commercial and residential real estate data.
5+ YOE5+ years .NET (C#) experience, bachelor's degree, experience with large-scale distributed systems, cloud (AWS/Azure), RESTful APIs, telemetry/observability, and familiarity with LLMs or agent architectures.
C#, .NET, SQL Server, AWS, Web API, RESTful, ASP.NET MVC, Lambda, DynamoDB, SQS, LLMs, SQL
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2mo
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Senior Software Engineer
Reston, Virginia, United States
OnsiteFull Time
NVR
NVRNYSE: NVR: Constructs residential properties and provides mortgage and settlement services.
5+ YOE5+ years in software development; Dynamics 365 CRM; .NET, C#, SQL; Azure; strong teamwork and problem-solving.
Microsoft Dynamics 365 CRM, NET, C#, SQL, Azure, REST APIs
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1mo
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.NET Software Developer
San Antonio or Fairfax or Washington
RemoteFull Time
Pivot Path Solutions
Pivot Path Solutions: Provides IT, cybersecurity, and mission support to government agencies.
6+ YOEBS in CS/engineering/info systems and 6+ years software design and SDLC experience; hands-on ASP.NET, VB.NET, C#.NET, JavaScript, HTML/CSS, Oracle, Visual Studio 2019, Azure DevOps; U.S. Citizenship and active government clearance required.
ASP.NET, VB.NET, C#.NET, jQuery, JavaScript, HTML, CSS, Oracle, Visual Studio 2019, Azure DevOps, UML, Agile Scrum
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2mo
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Senior Fullstack Software Engineer (.Net and Angular)
Budapest or New York City or Washington or London or Galway or Munich or Bengaluru or Singapore or Sydney
HybridFull Time
Diligent
Diligent: Provides software for corporate governance, risk, and compliance management.
5+ YOEBachelor's in CS/Math/Engineering (or equivalent), 5+ years commercial software engineering, strong Angular and C#/.NET experience, AWS/cloud-native design, CI/CD and containerization familiarity, Git/GitHub, and mentoring skills.
Angular, C#, .NET, TypeScript, JavaScript, HTML, CSS, RxJS, NgRx, Redux, ASP.NET Core, Entity Framework Core, OpenAPI / Swagger, AWS, ECS/Fargate, Lambda, SQS, SNS/EventBridge, S3, DynamoDB, Step Functions, Nx, Angular Material, AWS CDK, Terraform, Docker, GitHub Actions, .NET Aspire, gRPC, Polly, Git, GitHub, CI/CD
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3w
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Senior .NET Developer
Crum Lynne or Chicago or Reston or Boca Raton
$90k-$150k/yr RemoteFull Time
TransUnion
TransUnionNYSE: TRU: Provides global credit reporting and risk management information solutions.
5+ YOE5+ years building enterprise .NET applications, strong architecture and database skills, Agile experience, cloud and CI/CD familiarity, Bachelor's degree or equivalent experience.
C#, ASP.NET MVC, ASP.NET Web API, .NET Framework, .NET Core, .NET 5, .NET 6, Microsoft Visual Studio, SQL Server, PostgreSQL, AWS, Autofac, Ninject, Unity, CI/CD
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2w
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C#/.NET Developer, Senior
Washington, District of Columbia, United States
$130k-$145k/yr OnsiteFull Time
Technica Corporation
Technica Corporation: Provides systems engineering and cybersecurity services to federal agencies.
8+ YOEActive Top-Secret with SCI and CI Poly eligibility; Bachelor’s in Computer Science or equivalent; 8+ years software development; 3–5 years C#/.NET experience; ASP.NET, Entity Framework, SQL Server, unit testing, and secure coding.
C#, .NET, ASP.NET, Entity Framework, SQL Server, Git, GitLab, AWS, Azure, Docker
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1mo
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Senior Software Engineer (C#/.NET)
Arlington, Virginia, United States
$143k-$187k/yr HybridFull Time
CoStar Group
CoStar GroupNASDAQ: CSGP: Provides global real estate information, analytics, and online marketplaces.
5+ YOE5+ years .NET (C#) development experience, AWS/cloud and distributed system experience, REST/ASP.NET MVC, data modeling, familiarity with LLMs and observability; Bachelor’s degree required.
C#, .NET Framework, SQL Server, AWS, Web API, ASP.NET MVC, Lambda, DynamoDB, SQS, large language models (LLMs)
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.NET / C# Developer - Senior - #879
Fort Belvoir, Virginia, United States
OnsiteFull Time
Allen Integrated Solutions
Allen Integrated Solutions: Provides technical and engineering services for national security missions.
8+ YOERequires 8 years of .NET development, 5 years each in SDLC, software testing, SQL stored procedures, mentoring, and defect tracking. Requires TS/SCI with polygraph and DoD 8140.03 IAT Level II certification.
.NET, C#, MS.NET, ASP.NET MVC, Internet Information Services (IIS), Windows Server, Software Development Life Cycle (SDLC), SQL
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3w
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Senior .Net Applications Developer
Washington, District of Columbia, United States
HybridFull Time
AVER
AVER: Provides data analytics and IT services for federal agencies
8+ YOE8+ years .NET application development experience, expertise with .NET Core/.NET 6, C#, Azure/DevOps, databases, web services, security protocols, and leading development teams.
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, Cosmos DB, MongoDB, jQuery, AJAX, Telerik Kendo UI, RESTful Web Services, Windows Services, ASP.NET Core, Entra ID (Azure AD), SAML, OAuth 2.0, OpenID Connect, JSON Web Token (JWT), RBAC, Windows Server 2019, Microsoft Visual Studio 2022, Azure Logic Apps, Event Grid, GraphQL
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2w
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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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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
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