C# jobs in Columbia, MD

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

.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

Software Developer(C#, ERP, AI)

Remote or Valhalla, New York

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Today

Description We are looking for a Software Developer to join our team in Valhalla, New York and contribute to the continued development of a modern enterprise resource planning platform. In this role, you will collaborate with cross-functional partners to build reliable application features, improve integration capabilities, and support clients through well-crafted technical solutions. This opportunity is ideal for someone who enjoys hands-on coding in C# and .NET while also exploring practical w

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Full-time

USD 70,000.00 - 80,000.00 per year

Lead C#.NET Developer - COTS

Remote or Hybrid in Raleigh, North Carolina

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3d ago

ONLY W2ONLY W2ONLY W2 MUST have experience working on COTS products Title: Lead Developer Location: McLean, VA 22102 (Remote) Duration: 6 Months Contract (Potential Extension) Job Description: Terms of Employment W2 Contract, 6 MonthsRemote Opportunity (US EST Time zone work schedule (Candidates in Raleigh NC preferred but not required) Overview The Developer, Specialist performs thorough end-to-end analysis of complex business functionality, provides technical solutions for complex business re

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Contract

Depends on Experience

Software Engineer IV (C#/.NET)

Remote

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Today

Software Engineer IV (C#/.NET) Remote- CST/EST Hrs. 5-month contract Key Responsibilities - Perform hands-on software development using C#/.NET. - Support vulnerability remediation and application modernization efforts. - Perform heavy application migration and source-control migration activities. - Work with GitHub and migrate applications from one source-control platform to another. - Develop and maintain CI/CD pipelines, with specific experience using Harness. - Utilize Azure DevOps

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

$DOE

Lead Software Developer in Test (C#)

Remote or Hybrid in Cleveland, Ohio

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Today

Our Fortune 100 client is hiring for a Lead Software Developer in Test to assist the project team with driving quality-centric practices into their software development processes and will also be responsible for working closely with the project teams to guide their use of test automation assets and consult on the creation and use of new test automation. 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: - S

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Contract

DOE

.NET Support Engineer

Ellicott City, Maryland

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2d ago

Need Someone Who Can Attend Face - Face InterviewJob SummaryWe are looking for a skilled.NET Support Engineerto provide application support, troubleshooting, and maintenance for business-critical applications developed on the Microsoft .NET platform. The ideal candidate should have strong debugging skills, experience with SQL databases, and the ability to resolve production issues efficiently. Key Responsibilities Provide support for .NET-based applications.Investigate, troubleshoot, and resolve

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Contract

50 - 55

Contract role: .NET Backend Developer at Washington, DC ( Hybrid Model - 3 days Onsite) || W2 Only

Hybrid in Washington, District of Columbia

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Today

.NET Backend Developer Washington, DC ( Hybrid Model - 3 days Onsite) Long Term Contract Job Summary We are looking for an experienced .NET Backend Developer to design, develop, and maintain scalable backend applications and microservices using C#, .NET Core/.NET 8, ASP.NET Core, Azure, Docker, and Azure Kubernetes Service (AKS). The ideal candidate will have strong hands-on experience developing cloud-native applications, building REST APIs, implementing microservices architecture, and deploy

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Contract

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

Remote

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10d 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

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 Full Stack Developer

Remote

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Today

Seeking a Full Stack Developer to design, develop, and support modern web applications and APIs in a cloud-based environment. This role will leverage C#/.NET 8+, ASP.NET Core Web API, Entity Framework Core, AWS Lambda, React, TypeScript, and Redux Toolkit to build scalable, high-performing solutions. The ideal candidate has strong full stack development experience and enjoys working across both front-end and back-end technologies. Beacon Hill is an equal opportunity employer and individuals with

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Contract

Sr. Software Engineer (C# .NET/Azure/React/API

Remote

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5d ago

Title: Sr. Software Engineer (C# .NET/Azure, React, APIs, Kafka and Kubernetes) Location: REMOTE Duration: one year with possible extensions Compensation: 70-80/hr Work Requirements: , Holders or Authorized to Work in the US Job Description: Seeing a motivated Software Development professional passionate about NET/Azure development and integrations. You excel at software development and have experience in .NET, specifically C#, React, API, and Eventing. You are optimistic, proactive, analytica

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Third Party, Contract

$65 - $70

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

.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

Software Engineer 1 - (Java, C#/.NET, JavaScript)

Annapolis, Maryland

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Today

Software Engineer 1 - (Java, C#/.NET, JavaScript) Clearance: TS/SCI - Polygraph required Position ID: 17-10-SWE1 Location: Annapolis Junction, Maryland Position Required Skills: Experience programming with Java (Hibernate, Spring MVC Framework, Spring Boot, Log4J)Experience programming with C#/.NETJavaScript experienceExperience with development and version control tools (Git, Gradle)Experience with multiple operating systemsLinux: Bash scripting, RPM packagingWindows: PowerShell scriptingExpe

Full-time

USD 177,000.00 - 217,000.00 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

Senior Software Engineer (C#/.NET)

Arlington, Virginia

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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

Mid level C#.Net Engineer with AI and AWS

Baltimore, Maryland

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Today

CANDIDATES MUST CURRENTLY LIVE IN COMMUTABLE DISTANCE OF BALTIMORE, MD THIS IS A FULL-TIME POSITION. CONSULTANTS WILL NOT BE CONSIDERED This position is HYBRID with in office a minimum of 2 days/week. Our client is looking for a sharp, motivated full-stack engineer. You won't get lost in a sprawling org chart or buried in meetings. You'll be part of a small team of top performers who own their work end-to-end, ship things that matter, and push each other to grow. Here's what makes this ro

Full-time

Senior Software Engineer - C# / WPF

Arlington, Virginia

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Today

CaseGuard is looking for a senior engineer to help drive the evolution of CaseGuard Studio, a feature-rich .NET desktop application for video, audio, image, and document redaction. You'll own significant areas of a large WPF codebase that spans real-time video playback, AI-powered detection, and media processing pipelines - and help shape how the team builds software. Responsibilities: Lead technical design with product owners and designers, turning ambiguous product goals into architecture, act

Full-time

Senior .NET/C# Engineer - Iris AI

Remote

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Today

About Delinea: Delinea is a pioneer in securing human and machine identities through intelligent, centralized authorization, empowering organizations to seamlessly govern their interactions across the modern enterprise. Leveraging AI-powered intelligence, Delinea's leading cloud-native Identity Security Platform applies context throughout the entire identity lifecycle - across cloud and traditional infrastructure, data, SaaS applications, and AI. It is the only platform that enables you to disco

Full-time

USD 130,000.00 - 162,200.00 per year

C# jobs in Columbia, MD, USA