.Net Web Developer Jobs in Ashburn, VA

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.Net Developer

ISite Technologies Inc

•

Washington, District of Columbia, USA

Third Party, Contract

Dev: ASP .NET, .NET Core, C#, Generics, Delegates, Events Web Services WCF, REST, Web APIs, Azure Resources : Azure Managed Identity, Service Bus, App Services, Function Apps, WebApps AI/ML Skills- Python, Agentic AI, MCP, Azure Open AI or relevant experience. Test: XUnit / NUnit / MSTest Must Have: Strong Experience with.Net Core. Development, enhancements, maintenance, migrations. Strong Experience of SQL coding guidelines, best practices etc. Strong Experience of CICD toolset: VSO/TFS On the
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Posted 2 hours ago

.Net Developer

Electronic Consulting Services, Inc (ECS Federal)

•

Arlington, Virginia, USA

Full-time

Job Description ECS is seeking a .NET Developer to work remotely . Expert applications developer with robust technical design capabilities including experience implementing design patterns such as MVC and MVP Works collaboratively with a development team to transform business requirements into a technical solution Ability to work independently in the writing and support of complex applications May take on specialized duties on the development team as assigned Salary Range: $161,268 - $167,268
Posted 13 days ago | Updated 11 hours ago

NET Developer

LinTech Global Inc.

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Washington, District of Columbia, USA

Full-time

LinTech Global Inc. is recruiting for a .NET Developer to support our contract at the USPSOIG in Arlington, Virginia working fulltime remote from home. Position Overview: Expert applications developer with robust technical design capabilities including experience implementing design patterns such as MVC and MVP Works collaboratively with a development team to transform business requirements into a technical solution Ability to work independently in the writing and support of complex applicat
Posted 13 days ago | Updated 11 hours ago

.NET Developer

Motion Recruitment Partners, LLC

•

Reston, Virginia, USA

Full-time

A nonprofit leader in the healthcare space, is seeking a talented Full-Stack .NET Developer for a long-term contract opportunity. Based in Reston, VA, this company is pioneering the future of medical imaging by advancing how MRIs are scanned and interpreted. You'll work with tools including .NET Core, Angular 8+, and AWS to build solutions that directly impact patient care and medical safety. You will use your software development skills to improve the way doctors diagnose and treat patients. Th
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Posted 13 days ago | Updated 11 hours ago

Mid Level .NET Developer

Motion Recruitment Partners, LLC

•

Arlington, Virginia, USA

Full-time

An established medical association based in Washington, DC is seeking a Mid-Level .NET Developer. This is a contract to hire hybrid position requiring two days onsite per week. You'll be working on their registry program using C#, ASP.NET, MVC, and SQL. This is a great opportunity for a developer who wants to build meaningful applications in the healthcare space. You'll play a key role in supporting national clinical registry systems that help improve patient care and drive medical research. If
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Posted 27 days ago | Updated 11 hours ago

Dotnet Developer

AaraTechnologies Inc

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Remote or Washington, District of Columbia, USA

Contract

Job Title: . Job Overview Aaratech Inc is seeking a skilled and motivated .NET Developer to join our growing team in Texas. The ideal candidate will have a strong background in full-cycle software development and a passion for building scalable, high-quality web applications. You'll collaborate with cross-functional teams to design, develop, and deliver innovative software solutions aligned with our business objectives. Responsibilities Design, develop, test, and maintain .NET applications Coll
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Posted 10 days ago

Senior .NET Developer

Motion Recruitment Partners, LLC

•

Arlington, Virginia, USA

Full-time

A nonprofit organization located in Georgetown DC is hiring a Senior .NET Developer for a six-month contract to hire opportunity. This is a hybrid role requiring two days onsite each week. The position focuses on technologies including C#, ASP.NET, MVC, and SQL Server. Candidates should be comfortable owning projects from planning to deployment while working closely with both technical teams and business stakeholders. This role offers the chance to contribute to a mission driven environment wher
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Posted 60+ days ago | Updated 11 hours ago

Full Stack .NET Developer

Harmonia Holdings Group, LLC.

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Washington, District of Columbia, USA

Full-time

Harmonia Holdings Group, LLC is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction. Position: Full Stack .NET Developer Location: Washington DC - Fully Onsite Clearance: Top Secret with SCI We have an exciting opportunity for a Full Stack .NET Developer to join our team. The ideal candid
Posted 26 days ago | Updated 11 hours ago

Junior .NET Developer

Cornerstone Defense

•

Reston, Virginia, USA

Full-time

Location: Reston, Virginia Type: Contract Job #3560 Title: .NET Developer Location: Chantilly, VA *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed
Posted 60+ days ago | Updated 2 hours ago

Full Stack .NET Developer

Oscar Technology

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Remote

Full-time

Position: .NET Developer - Real-Time Systems | Up to $135,000 | On-Site - Dallas, TX The Role: We're looking for an experienced .NET Developer to join our client's on-site engineering team in Dallas/Irving, TX. In this role, you'll design, develop, and maintain high-performance applications focused on real-time data processing and control systems. Leveraging technologies such as .NET Core, C#, Blazor, Azure, and SQL, you'll collaborate closely with engineers and product teams to build scalable
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Posted 7 hours ago | Updated 3 hours ago

Full Stack Developer (C# / .Net / JS / SQL / AWS)

Cymertek Corporation

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Reston, Virginia, USA

Full-time

Full Stack Developer (C# / .Net / JS / SQL / AWS) LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a skilled and versatile Full Stack Developer to join our team, specializing in C#, .NET, JavaScript, SQL, and AWS. In this role, you will be responsible for building and maintaining robust, scalable applications across both the front-end and back-end. You will collaborate closely with cross-functional te
Posted 60+ days ago | Updated 2 hours ago

Full Stack Developer (C# / .Net / JS / SQL / AWS)

Cymertek Corporation

•

Chantilly, Virginia, USA

Full-time

Full Stack Developer (C# / .Net / JS / SQL / AWS) LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a skilled and versatile Full Stack Developer to join our team, specializing in C#, .NET, JavaScript, SQL, and AWS. In this role, you will be responsible for building and maintaining robust, scalable applications across both the front-end and back-end. You will collaborate closely with cross-functional
Posted 60+ days ago | Updated 2 hours ago

.Net Developer

4 Consulting Inc

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Remote

Full-time

Who we are! At 4Ci our mission is to build long term relationships, based on trust, integrity, and knowledge with all our employees and business affiliates. 4Ci has been in business for 20 years and has employees working on mission critical projects nationwide. We provide computer programming, testing, and system design services to develop and maintain multi-year, multi-million-dollar mission critical applications for the US Government. Examples of such applications are Medicaid MMIS systems, He
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Posted 37 days ago | Updated 6 days ago

Full Stack Developer (C# / .Net / JS / SQL / AWS)

Cymertek Corporation

•

Tysons, Virginia, USA

Full-time

Full Stack Developer (C# / .Net / JS / SQL / AWS) LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are looking for a skilled and versatile Full Stack Developer to join our team, specializing in C#, .NET, JavaScript, SQL, and AWS. In this role, you will be responsible for building and maintaining robust, scalable applications across both the front-end and back-end. You will collaborate closely with cross-functional te
Posted 60+ days ago | Updated 2 hours ago

React .NET Full Stack Developer

PY DATA, INC.

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Remote

Contract

Position: React .NET Full Stack Developer Duration: 6 months plus Location: 100% Remote Only W2 Consultants Must Haves: .Net CoreC#ReactJSWeb APIsRESTSQL Server, MySQL, Snowflake (2 out of 3)AWSExperience doing full testing and releasesGitHub, GitLab
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Posted 1 hour ago

.NET Developer (W2 Position)

Primesoft, Inc

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Remote

Contract

Role : .NET Developer MOI : 2 Video Rounds Exp : 10+ Years Location : Multiple Locations,Remote Your Impact: Develop and maintain application features using .NET and the MAUI framework. Write and maintain unit tests using xUnit or NUnit, achieving a minimum of 90% code coverage. Collaborate with cross-functional teams to define, design, and ship new features. Troubleshoot and resolve defects in collaboration with the Quality Engineering team. Participate in code reviews and contribute to continu
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Posted 5 days ago

.Net Developer

4 Consulting Inc

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Remote or Texas City, Texas, USA

Full-time

Who we are! At 4Ci our mission is to build long term relationships, based on trust, integrity, and knowledge with all our employees and business affiliates. 4Ci has been in business for 20 years and has employees working on mission critical projects nationwide. We provide computer programming, testing, and system design services to develop and maintain multi-year, multi-million-dollar mission critical applications for the US Government. Examples of such applications are Medicaid MMIS systems, He
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Posted 60+ days ago | Updated 6 days ago

Software Developer (C#, .NET framework, .NET Core, JavaScript, and CSS)

Techgroup America Inc.

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Remote

Contract

Job Details Position: Software Developer Location: Remote Duration: 6-month contract Start Date: 7/21/2025 Description: The Software Developer Level 3 is responsible for leading a small agile development team within our Enterprise Services & Integrations systems. This role involves designing, developing, and implementing software solutions using C#, .NET framework, .NET Core, JavaScript, and CSS. The ideal candidate will have experience building RESTful APIs, web services for data transfer an
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Posted 4 days ago

Lead .NET Developer (MAUI, Xamarin) - W2 Only - Remote

Primesoft, Inc

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Remote

Contract

Role: Lead .NET MAUI Developer Exp: 10+ yrs Location: Remote (NY/CA/MA/IL/CO/MN/FL/GA/MI) Your Impact: Lead a development track for .NET MAUI applications targeting Android, Windows, and other platforms.Estimate user stories and contribute to sprint planning and technical design discussions.Mentor and support developers, ensuring alignment with coding standards and best practices.Own the quality of all code produced within your track, including code reviews and testing.Collaborate with the Lead
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Posted 5 days ago | Updated 10 hours ago

MES Developer with .net and C#

Indotronix International Corp

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Remote

Contract

Role: MES Developer Location: Remote Pay Rate: $77/Hr on W2 Duration: 6+ Months Location: Remote, required to be within 1-2 hour commutable distance in one of the following client office locations: - Corning, NY - Charlotte, NC - Vineland, NJ - Phoenix, AZ - Hemlock, MI - Hickory, NC - Blacksburg, VA - Keller, TX - Boston, MAKey Responsibilities: Strategic view and understanding of Siemens Opcenter/Camstar Execution to lead design and development efforts across client. Design, implement,
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Posted 6 days ago