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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

326 sr net developer jobs at 176 companies in Westminster, MD

2mo

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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

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1mo

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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1mo

.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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1mo

.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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1w

.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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6d

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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4d

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4d

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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5d

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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2w

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2w

Senior .Net Developer #1815017

Alexandria or McLean or Washington

$125k-$140k/yr HybridFull Time

Network Designs, Inc.

Network Designs, Inc.: Provides IT, network, and cybersecurity solutions to government agencies.

8+ YOEU.S. citizen with active Public Trust clearance, BS in Computer Science (or related), 8+ years' experience, .NET/SQL/Azure experience, EM/VM familiarity, strong communication and critical thinking.

.NET, SQL, Dynamics, Azure Application Service Environments, Windows Virtual Machines, CI/CD

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5d

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5d

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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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

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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

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5d

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5d

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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5d

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5d

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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3d

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3d

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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3w

.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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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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3w

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3w

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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2mo

Senior Full Stack .NET Developer with Azure/Angular (On Site)

Washington, District of Columbia, United States

$68k-$140k/yr OnsiteFull Time

Cognizant

CognizantNASDAQ: CTSH: Provides IT consulting and technology services to global enterprises.

10+ YOESenior Full Stack .NET Developer with Azure/Angular; 10+ years in .NET, Azure, DevOps, Angular, SQL Server; on-site in Washington, DC; US work authorization.

Angular, .NET, Azure, Docker, SQL Server, SSRS, C#, VB.NET, ADO.NET, Entity Framework

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5d

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5d

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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