C# Developer jobs in District of Columbia

Fort Belvoir, Virginia

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Today

.NET / C# Developer - Senior - #879 Location: Fort Belvoir, VA TS/SCI w/CI Poly REQUIRED Experience: Eight years of experience in .NET Development (including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development).Five years of experience with Software Development Life Cycle Process (SDLC).Five years of experience with software development Unit Testing, System Testing, Functional Testing, User Acceptance Testing, or other development testing experience.F

Full-time

Senior Software Engineer - Full Stack C# Developer

Maryland

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Today

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Cascading Style Sheets (CSS), Software Development, Systems Development Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: Job Description Software Engineer Sr Advisor Deliver simpl

Full-time

USD 111,155.00 - 150,385.00 per year

Jr. Net, C#, SQL Developer - Active Top Secret required

Washington, District of Columbia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Development Experience, Microsoft .NET, Software Development Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Deliver simple solutions to complex problems as a SOFTWARE DEVELOPER at GDIT. Here, you'll tailor cu

Full-time

USD 81,349.00 - 92,000.00 per year

Full Stack Software Developer with C#/.NET Expertise

McLean, Virginia

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Today

Job Title: Full Stack Software Developer with C#/.NET Expertise Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * Bring your expertise and sense of urgency to a team performing mission critical work. Within this team and supporting our product, you will have a direct hand in shaping requirements and expectations for current and fut

Full-time

USD 90,300.00 - 189,600.00 per year

C#.NET Developer with Trading And Capital Market Exp

Remote

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Today

JOB DESCRIPTION: Please apply only if you have Investment banking/Capital market experience. Role: C#.NET Developer with investment banking and Capital Market exp.Location: NY(Remote)Job Type: W2 / Fulltime Client is looking for a reliable full stack Dot Net developer ASAP.Wealth Management & Capital Market (Trading, Equities, , Portfolio) Exp. Must.SQL, C#, .NET, Full stack developer with 8+ years of experienceProficiency in C#, .NET framework, and object-oriented programming principles.Experie

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Full-time

Depends on Experience

C#/Duck Creek Developer (Field Engineer)

Remote or Hybrid

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Today

Precision is seeking TWO (2) Duck Creek/C# Developers for a contract position with our Fortune 100 client. This fully remote role supports software applications and platform enhancements using Duck Creek Policy, C# .NET, Kafka, and API development. You will analyze requirements, create programming specifications, develop and test code, support production applications, and maintain technical documentation. The role requires strong troubleshooting, problem-solving, organization, and communication

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Contract

DOE

C#/VB.NET Developer

Remote or Hybrid

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Today

Our Fortune 100 client is seeking a Senior IT Software Developer for a 12-month contract assignment. This remote role focuses on developing software solutions, with approximately 80% back-end development and 20% front-end development. The developer will analyze requirements, write and modify complex code, test applications, support production systems, and maintain technical documentation. The role requires strong experience with VB.NET, C#, SQL Server, integration and reporting services, SQL Alw

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Contract

DOE

Sr. Software Systems Engineer (C#/.NET Developer)

Remote

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Today

Job ID: 2616245 Location: Remote Work, TX, US Date Posted: 2026-08-28 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: ORA_REMOTE Description SAIC is searching for a motivated, career and customer-oriented Sr. Software Engineer (C#/.NET Developer) who will work across EDI transaction processing, backend API develo

Full-time

USD 80,001.00 - 120,000.00 per year

Sr. Software Systems Engineer (C#/.NET Developer)

Remote

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Today

Job ID: 2616718 Location: Remote Work, TX, US Date Posted: 2026-09-10 Category: Engineering and Sciences Subcategory: Systems Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: ORA_REMOTE Description SAIC is searching for a motivated, career and customer-oriented Sr. Software Engineer (C#/.NET Developer) who will work across EDI transaction processing, backend API develo

Full-time

USD 80,001.00 - 120,000.00 per year

CANO/WiFi Software Developer- C/C#

Fort Belvoir, Virginia

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Today

Oak Grove Technologies, LLC, a dynamic and fast-growing federal contractor, is seeking a highly skilled and motivated CANO/Wifi Developer (C/C#) to join our team! In this role you will conduct offensive development for Windows environments. Oak Grove Technologies is a Service-Disabled Veteran-Owned Business based in Raleigh, NC, with a Test and Training Center located near Fort Bragg and Camp Mackall. With over 20 years of expertise in training, consulting, technology, and operational support,

Full-time

C# Software Developer

Fort Belvoir, Virginia

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Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Software Engineering Job Qualifications: Skills: Application Development, Quality Assurance (QA), Software Development Methodology Certifications: None Experience: 6 + years of related experience ship Required: Yes Job Description: Join GDIT and be a part of the team of men and women that solve some of the world's most co

Full-time

USD 123,250.00 - 166,750.00 per year

Senior .Net Application Developer (Secret clearance)

Reston, Virginia

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14d ago

Senior .Net Developer Arlington, VA or Merrifield, VA - ONSITE Secret Clearance is required to start Must be able to obtain DEA clearance 2-6 month process Responsibilities: Works in a collaborative team environment to develop and enhance code for applications built within the Concorde framework, ensuring high-quality and efficient solutions. Demonstrates strong expertise in Agile development methodologies through daily activities, including sprint participation, task execution, and adherenc

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Contract

Depends on Experience

Dynamics 365 Developer

Hybrid in Fairfax, Virginia

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Today

Dynamics 365 Developer 6 Months contract later hire Location: Fairfax, VA- Hybrid model Job Description : Position Description The client is seeking a talented and motivated Microsoft Dynamics 365 Developer to join our team supporting a leading financial services client.In this role, you will design, develop, enhance, and support enterprise business applications built on the Microsoft Dynamics 365 and Power Platform ecosystem.You will collaborate with cross-functional teams to deliver scalab

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Contract

Depends on Experience

Need Mainframe developer with C#/.net experience

Remote

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Today

Position: Mainframe Developer (C#/.NET) Required Skills: Strong experience in Mainframe technologies (COBOL, JCL, CICS, DB2, VSAM).Hands-on experience in C#/.NET development.Experience with SQL Server and database design.Knowledge of mainframe modernization, integration, and API development.Ability to analyze, maintain, and enhance legacy mainframe applications.Experience with system troubleshooting, performance tuning, and production support.Understanding of SDLC, Agile methodologies, and versi

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Contract

Depends on Experience

D365/Power Platform/Azure - Senior Developer

Hybrid in Washington, District of Columbia

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Yesterday

We seek a handson Senior Developer to build, release, and support STAAND on Dynamics 365 and Power Platform. Duties include daily coding, CI/CD and ALM ownership, quality reviews, production support, and direct collaboration with staff to meet needs. Bachelor's degree in Computer Science, Software Engineering, Information Systems, Data Science, or a closely related technical discipline - (16 Years)Progressive software development experience - (10 Years)Hands-on Dynamics 365 CE / Dataverse / Powe

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Contract, Third Party

90 - 100

Full Stack Developer (.NET / C# + React)

Remote

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28d ago

About the Role Our client, a company in the payments/fintech space, is seeking an experienced Full Stack Developer to join their engineering team. You'll build and maintain secure, high-throughput services on a modern .NET + Azure stack, working across the backend and the React front end. This is a fully remote, contract or direct-hire for candidates already based in the U.S and authorized to work. What You'll Do Design, build, and maintain backend services in C# / .NETDevelop responsive, user-f

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Full-time

$80

Mainframe Developer with C# (W2 Contract)

Remote

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Today

Hiring, Greetings from Modern Agile Technologies. Position: Mainframe Developer with C# Experience Location: Remote (Fine to work in AZ time zone) Type : Contract Required Skills: Strong experience in Mainframe technologies (COBOL, JCL, CICS, DB2, VSAM).Hands-on experience in C#Migration project experience mainframe with C#healthcare industry must

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Contract

Depends on Experience

Software Developer

McLean, Virginia

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16d ago

Software DeveloperPractice: Software Development & Support / Digital Company: Guidehouse Location: RemoteSecurity and Work Authorization Requirements Must be able to obtain and maintain a Federal or Department of Defense Public Trust. Candidates must receive approved Public Trust adjudication before onboarding with Guidehouse. Candidates with an active Public Trust or current Federal suitability are preferred. Must be authorized to work in the United States without sponsorship.Position Overvi

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Contract

Depends on Experience

Lead Dotnet Developer - Remote (Must have: Google Cloud Platform, C#, ASP.NET, Web API) Direct client - 12+ months contract...

Remote

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Today

Must have: Technical Lead / .NET Lead, C#, ASP.NET, and ASP.NET Web API.Google Cloud Platform (Google Cloud Platform)services, specifically -Google Cloud Run-Google Cloud Run Jobs-Google Pub/Sub. Strong hands on coding, Familiarity with CI/CD pipelines, DevOps practices and modern software engineering methodologies and cloud deployment strategies. Leading a scrum team Requirements 10+ years of experience in software development with strong expertise in the Microsoft technology stack.Proven expe

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Contract

Depends on Experience

Legacy .NET Developer

Hybrid in Vienna, Virginia

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15d ago

Job Title: Full Stack Developer Location: Vienna, VA Type: Contract Compensation: Open to Both C2C and W2 options Work Model: Hybrid onsite and remote Responsibilities Identify business requirements (e.g., needs, objectives, functions, features, input and output) and translate into delivered technical solutions Utilize approved company software development tools and software applications to design, develop, implement and maintain custom code business solutions that align with business initiat

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Contract

Depends on Experience

C# Developer jobs in Washington, DC, USA