C# jobs in District of Columbia

Remote or Hybrid in Cleveland, Ohio

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Today

Our Fortune 100 client is hiring for a Senior Software Developer in Test who is highly proficient with test automation framework creation and enhancement. In this role, you ll work closely with developers to implement Reqnroll for scalable automated testing. The role is open to fully remote but candidates but must be willing to work ET hours within the United States. Day-to-Day Responsibilities: - Lead and implement automated testing using Reqnroll (SpecFlow-style BDD automation) for .NET servic

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Contract

DOE

.NET C# Developer

Washington, District of Columbia

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Today

Overview The C# .NET Developer will contribute to the development, enhancement, and maintenance of web applications and services that enable mission?critical operations in a federal environment. This role will work hands?on with the .NET framework and associated technologies to build clean, efficient, and reliable back?end components that integrate seamlessly with front?end and cloud?based systems. You will collaborate closely with senior developers, architects, designers, product owners, and

Full-time

USD 140,000.00 - 142,085.00 per year

Test Automation Lead with (C# Selenium, AI tools, Performance testing)

Remote

•

Today

Job Title: Test Automation Lead with (C# Selenium, AI tools, Performance testing) Location: Dallas, TX, St Louis, MO, Las Vegas, NV Hybrid Employment Type: Full-Time About Infinite: Infinite is a global leader in digital engineering and IT services, with over 20 years of experience driving digital transformation. We partner with leading Fortune 1000 companies to deliver innovative, scalable technology solutions that accelerate business outcomes. With deep expertise in telecommunications, healthc

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Full-time

Up to $90,000

Senior Software Development Engineer (C# / Power Pages / CRM)

Remote or Redmond, Washington

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Today

job summary: Join a specialized engineering team dedicated to protecting global customer systems and fighting cybercrime. In this role, you will design, develop, and deploy scalable CRM applications and intuitive customer portals that safeguard critical digital infrastructure. location: Telecommute job type: Contract salary: $65.74 - 75.74 per hour work hours: 8am to 5pm education: Bachelors responsibilities: Design and implement custom enterprise CRM solutions and customer-facing Power Pa

Contract

USD66 - USD76

.Net Developer (C#)

Remote

•

Today

.Net Developer (C#) 3+ months Remote .Net C# Regards Stephen DJA stephen at itresonance dot com

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Contract

Depends on Experience

.NET / C# Developer - Senior (Top Secret with agreement to obtain CI Poly)

Fort Belvoir, Virginia

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Today

This job requires active TS/SCI clearance with a CI Polygraph. Please apply only if you have an active TS/SCI clearance with a CI Polygraph. .NET / C# Developer - Senior Position / LCAT: .NET / C# Developer Level: Senior Lead Designation: N/A Location: Fort Belvoir, VA Role Summary Provides application development for a Microsoft-oriented enterprise environment, including MS.NET, C#, MVC 4+, and Internet Information Services (IIS) for Windows Server web development, in support of custom in-ho

Full-time

C# .Net Full Stack Engineer - Canada, Remote

Remote

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Today

Job Title: C# .NET Full Stack Engineer (AI/LLM) Location: Canada (Candidates must be currently based in Canada) Employment Type: Long-Term Contract About the Role We are seeking an experienced C# .NET Full Stack Engineer with strong expertise in modern backend and frontend development, cloud technologies, and AI-powered application development. The ideal candidate will have hands-on experience building scalable enterprise applications using C#/.NET, Azure, Next.js, and React, along with practica

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Contract, Third Party

.NET Full Stack Developer

Vienna, Virginia

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Today

.NET Full Stack Developer Location: Vienna, VA 22182 / Southfield, MI Duration: 12+ Months Contract (Extension Possible) Work Authorization: W2 Only (if applicable) Job description: We are hiring an experienced .NET Full Stack Developer with strong expertise in C# .NET 8, Azure Functions, Azure SQL, Azure Service Bus, React, TypeScript, Next.js 15, REST APIs, Entity Framework Core, and SQL Server. Candidates should have experience with Azure-native architectures, event-driven systems, AI codin

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Contract

Depends on Experience

QA Engineer - Playwright and C# exp - Hybrid - Plano, TX - W2

Remote or Plano, Texas

•

Today

We are seeking a skilled Senior QA Engineer to join our dynamic software development team. In this role, you will lead quality assurance initiatives across web applications and web services. You will be responsible for traditional manual/API testing, backend data verification, and building modern, reliable automated test suites. The ideal candidate blends strong foundational QA practices with modern automation expertise, possesses object-oriented coding skills, and is adept at utilizing AI-assis

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Contract

Senior C#/Angular Developer

Remote or Hybrid

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Today

Our Fortune 100 client is hiring for a Senior Fullstack Developer to focus on Angular front-end development and C# back-end to enhance capabilities. This role requires expertise in C#, .NET (back-end), Angular (v18+), JavaScript, HTML (front-end), SQL Server, and APIs. You'll analyze requirements, write and test code, support production systems, and ensure seamless software integration. Experience with Duck Creek insurance platform is a plus. This is a fully remote role foowing an ET work schedu

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Contract

DOE

Senior Windows Software Engineer (C# & .NET)

Remote

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4d ago

Position: Senior Microsoft Software Engineer (.NET, C# & Windows internals) Location: 100% REMOTE Employment type: Contract to hire Customer domain: Information Technology & Cybersecurity About the Role:Build and evolve the client's software Bot, the core automation engine behind the client s Windows endpoint management platform, while helping shape technical architecture and delivering secure, reliable software in C# and .NET. You will be working on the Microsoft operating system code.The perso

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Contract

$65 - $75

W2 (No C2C) :: Remote (EST & CST Only) :: Sr Technical Lead / Architect with C#, AWS & Healthcare Data Solutions Exp.; G.C / U.S.C

Remote

•

Yesterday

Sr. Technical Lead / Architect with C#, AWS & Healthcare Data Solutions Exp || G.C / U.S.C 18+Months Remote (EST & CST Only) **About the Company:** Join an innovative healthcare informatics organization dedicated to delivering cutting-edge technology for patient engagement, physician access, pharmacy benefit management, and payer data analytics. We partner with industry leaders in pharmaceuticals, biotechnology, and life sciences to optimize patient journeys and drive operational excellence th

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Contract

Depends on Experience

Full Stack C#/Angular Developer

Remote

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8d ago

Job Title:Full Stack C#/Angular Developer Location: Remote Duration: 12 Months + Extension Bill Rate: $70/hour Job Type: C2C/1099 Contract Client: To Be Discussed Later Work Authorization: U.S. Citizen, H-1B, OPT-EAD, GC-EAD POSITION SUMMARY: What to Expect The Insurance Claims Application team is seeking a Backend Software Engineer to contribute to the development of our Web App. These products are part of the advanced platforms for managing Service workflow for Vehicle, Insurance Claims and E

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Contract

$60 - $70

MANAGER - C# Software Engineering - Azure Cloud-Native Architecture

Remote

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Today

NO SPONSORSHIP - NO OPT Software Engineering Senior Manager - Azure Cloud SALARY: $195k - $235k plus discretionary bonus LOCATION: hybrid 3 days onsite if in Chicago Remote if in TX, MA, NY, DC, FL, CA. Target Salary Range : $195,000 - $234,400 Seeking a hands-on engineering leader with deep Azure expertise to lead a team of 5 7 engineers while driving cloud-native architecture, platform engineering, and modern software development within the Data & AI organization. Senior Engineering Manager wh

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Full-time

$195,000 - $235,000

Principal Software Architect / Software Architect (.Net/C#)

Remote

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Today

Hello; Principal Software Architect / Software Architect (.Net/C#) Long Term Job Location- Remote Core Platform C# / .NET 8 ,ASP.NET Core ,Vue.js 3 / TypeScript , SQL Server ,COBOL (legacy) Cloud & AI Amazon Web Services (AWS), Amazon Bedrock , AWS Lambda / ECS , Docker, MCP Server Architecture Architecture Domains SaS / SaaS / PaaS / Multi-Tenant ,Microservices ,API-First Design ,Event-Driven Architecture , CI/CD / DevOps Core Responsibilities Lead enterprise technical architecture for SaaS-h

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Full-time, Part-time, Third Party, Contract

C#/.NET developer(Payment Background)

Remote

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5d ago

Our client is a market-leading, fast-growing, global financial technology company that needs motivated and talented individuals to assist with delivering exceptional results that create great solutions! Their engineering teams utilize industry-leading technologies to solve interesting and complicated challenges for our rapidly expanding global payments market. If you are looking for a culture based on engineering excellence, in which your contributions and ideas really make a difference, this op

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Contract

50 - 65

Jr. C#.Net Full Stack Developer - Hybrid NYC

Remote or New York, New York

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Today

job summary: The Full Stack Engineer is responsible for both front end and backend development tasks, including database tasks. This individual will be well versed with programming languages that are required for client (user) side development, as well as integration approaches and technologies to bridge contemporary front-end implementations with legacy backend systems. Core Responsibilities: Design and develop responsive, scalable front-end applications using Angular, following component-ba

Contract

USD55 - USD57

.NET C# Developer

Washington, District of Columbia

•

Today

Overview The C# .NET Developer will contribute to the development, enhancement, and maintenance of web applications and services that enable mission-critical operations in a federal environment. This role will work hands-on with the .NET framework and associated technologies to build clean, efficient, and reliable back-end components that integrate seamlessly with front-end and cloud-based systems. You will collaborate closely with senior developers, architects, designers, product owners, and

Full-time

USD 140,000.00 - 142,085.00 per year

Senior Software Engineer (C#/.NET)

Arlington, Virginia

•

Today

Senior Software Engineer (C#/.NET) Job Description Overview CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. We have been living and breathing the world of real estate information and onlin

Full-time

USD 143,000.00 - 187,000.00 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

C# jobs in Washington, DC, USA