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3,014 senior net developer jobs at 1,403 companies in United States

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Senior .NET Developer
Winston Salem or North America
RemoteFull Time
Better Impact
Better Impact: Volunteer management and engagement software for purpose-driven organizations.
8+ YOE8+ years C#/.NET experience; led .NET Framework-to-modern-.NET migrations of large production monoliths; deep NHibernate preferred; experience improving CI/CD and replacing legacy dependencies.
C#, .NET, .NET Framework, .NET Core, .NET 10, NHibernate, SSRS, CI/CD, ASP.NET MVC, VB.NET
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Senior .NET developer
Boston, Massachusetts, United States
$115k-$140k/yr OnsiteFull Time
Boston Globe Media
Boston Globe Media: Publishes and distributes independent news and journalism in New England.
5+ YOE5+ years building .NET/C# applications, SQL database experience, REST API development, web frontend skills, version control (Subversion/Git), agile experience, strong communication and mentoring ability.
.NET, C#, MySQL, Postgres, SQL Server, HTML, CSS, JavaScript, Subversion, Git, React, Node.js, Piano ID
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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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1mo
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[Job - 29527] - Developer .NET Senior/Master
Brazil or Colombia or United Kingdom or United States
RemoteFull Time
CI&T
CI&TNYSE: CINT: CI&T provides global digital transformation and software engineering services.
Senior .NET Engineer with strong .NET Framework/Core, SQL Server, SOAP/REST, XML, design patterns, and English proficiency; backend services, API development, and CI/CD practices.
.NET Framework, .NET Core, ADO.NET, SQL Server, SOAP, REST, XML, CI/CD, Azure
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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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1mo
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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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2d
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Senior .Net Developer
Maryland, United States
OnsiteFull Time
Infinite Computer Solutions
Infinite Computer Solutions: Provides digital engineering and IT transformation services for enterprises.
8+ YOE8+ years software development with .NET, C#, Web API, RESTful APIs, SQL Server, Azure, Git/Azure DevOps, healthcare interoperability (HL7/FHIR), and secure HIPAA-compliant development.
C#, ASP.NET MVC, ASP.NET Core, .NET Framework, .NET Core, .NET 6, .NET 7, .NET 8, Web API, Entity Framework, Entity Framework Core, LINQ, SQL Server, HL7, FHIR, X12, CCD/C-CDA, EHR/EMR, Epic, Cerner, Meditech, Allscripts, HIPAA, Microsoft Azure, Azure Functions, Azure Service Bus, Azure API Management, Azure DevOps, Git, CI/CD Pipelines, Docker, Kubernetes, React, Angular, Blazor, JavaScript, TypeScript, HTML5, CSS3, Bootstrap
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2mo
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Senior .NET Engineer
Carlsbad or United States
HybridFull Time
NTENT
NTENT: Develops semantic search and natural language processing technology platforms.
3+ YOE3+ years experience; .NET Core and C#; multi-threaded programming; REST APIs; scalable architectures; distributed data stores (Aerospike, Elasticsearch, Kafka); testing.
.NET Core, C#, REST API, Aerospike, Elasticsearch, Kafka, Docker, Kubernetes, Git, React, JavaScript, TypeScript, HTML, CSS
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3mo
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.Net / C# Developer - Senior
Fort Belvoir, Virginia, United States
OnsiteFull Time
Evans & Chambers Technology
Evans & Chambers Technology: Develops technology solutions and software for national defense missions.
8+ YOEEight years in .NET development; five years in SDLC; testing experience; SQL database development; mentoring; defect tracking.
.NET, C#, MVC, IIS, SQL, SDLC
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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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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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2mo
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Senior .Net Developer #1775411
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+ YOE10+ years .NET development, BS in CS, onsite in Alexandria VA, US citizenship and ability to obtain Public Trust; strong Angular, SQL, APIs, and DevSecOps practices.
Net, Net Core, Angular, SQL, APIs, DevSecOps
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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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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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Senior .Net Developer
United States
RemoteFull Time
IntelAgree
IntelAgree: AI-powered platform for automated contract lifecycle management.
3+ YOEComputer science background, 3+ years professional software development, strong .NET/C# and ASP.NET Core experience, SQL Server, REST APIs, Entity Framework Core, LINQ, Azure, agile/SCRUM, unit testing and CI, JSON, frontend (HTML5/CSS/JavaScript, jQuery, Vue3), experience with AI-assisted development tools.
.NET, C#, ASP.NET Core, Entity Framework Core, LINQ, SQL Server, JSON, HTML5, CSS, JavaScript, jQuery, Vue3, D3, GitHub Copilot, ChatGPT, Azure AI Foundry, Azure
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1d
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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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4d
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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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2mo
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Senior .NET Payer Developer- VHA Finance- May 2026
United States
RemoteFull Time
HigherEchelon
HigherEchelon: Provides leadership development, coaching, and IT consulting services.
8+ YOESenior .NET Developer with full-stack, cloud, Agile, REST APIs, CI/CD, and data integration experience.
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, GitHub Actions, GitLab CI/CD, Jira, Docker, Kubernetes, RESTful API, CI/CD
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Senior .NET Developer (Contract)
Troy or Detroit
OnsiteMultiple Commitments Available
V2X
V2XNYSE: VVX: Provides logistics, facility management, and mission support services.
7+ YOE7+ years software development experience with C# and ASP.NET, proven .NET Framework to .NET 8 migration, strong Microsoft SQL Server skills, REST/JSON integration, JS framework experience, and AI/ML integration exposure.
C#, Microsoft ASP.NET, Microsoft .NET Framework, Microsoft .NET 8, Microsoft SQL Server, jQuery, React, Angular, OpenAI API, Microsoft Azure AI, REST APIs, JSON
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1mo
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Senior .Net Developer with AWS
Lafayette, Louisiana, United States
$90k-$141k/yr HybridFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years developing with C#/.NET, building RESTful APIs and microservices, AWS cloud experience, familiarity with Angular, Oracle, OpenText, CI/CD and automated testing; bachelor’s degree preferred.
C#, .NET, Angular, Oracle, AWS, OpenText, OpenShift, Kafka, TFS, GIT, SonarQube, Checkmarx, Terraform, Artificial Intelligence
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