C# Jobs in District of Columbia

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Sr. Software Engineer-Ver.Systems

American Association Of Motor Vehicle Admin.

•

Arlington, Virginia, USA

Full-time

We are looking for a Senior Software Engineer who can handle a fast, scalable, problem-solving software environment. You will be solving problems of scale and flexibility that most engineers never see, building a product capable of serving our customers in ways you never imagined. Your scope extends from the high-performance data layer to a complex business layer. This position requires the mental agility to jump from the deep code-level view to big picture view and back into code view. You will
Posted 25 days ago | Updated 7 hours ago

Advanced Software Engineer

General Dynamics

•

Manassas, Virginia, USA

Full-time

Basic Qualifications Requires a Bachelor's degree in Software Engineering, or a related Science, Engineering or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred. Must have one of the following: C++, Java or Python. CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is preferred at time of hire. Applicants selected will be subject to a U.S. Government security investi
Posted 53 days ago | Updated 10 hours ago

.Net Developer

Global Channel Management, Inc.

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Washington, District of Columbia, USA

Full-time

.Net Developer needs 10+ years' experience .Net Developer requires: Hybrid - Owing Mills MD - 2 days/Week 10+ Years Experience in IT. .NET development experience --Hands on experience with a Cloud provider such as Azure or AWS. --Development Experience in C#, Javascript, React, SQL Server, Postgres. Bachelor's degree in a technical field such as computer science, computer engineering or related field required Development experience in needed language or technology (e.g. - C#, C++, HTML) Hands on
Posted 60+ days ago | Updated 10 hours ago

Software Development Intern - Summer 2025

CACI International, Inc.

•

Chantilly, Virginia, USA

Part-time

Software Development Intern - Summer 2025 Job Category: Intern/Co-op Time Type: Part time Minimum Clearance Required to Start: None Employee Type: Part-Time On-Call Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: CACI is seeking a software development intern for Summer 2025 on-site in our Oklahoma City, OK or Chantilly, VA office. The position follows a hybrid work model, with remote work on Mondays and Fridays, and in-office presence required on Tuesdays
Posted 27 days ago | Updated 19 days ago

Back End Software Developer

SAIC

•

Arlington, Virginia, USA

Full-time

Job ID: 2504757 Location: ARLINGTON, VA, US Date Posted: 2025-04-17 Category: Software Subcategory: SW Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Secret Potential for Remote Work: No Description SAIC is looking for a Back End Software Developer who will be responsible for designing, testing, implementing, and maintaining core application software. This role involves a range of development tasks, from
Posted 15 days ago | Updated 8 hours ago

Senior Software Developer

Amentum

•

Fort Belvoir, Virginia, USA

Full-time

Senior Software Developer This position is located at Ft Belvoir VA at the Defense Threat Reduction Agency as part of Advanced Red Cyber Team Operations. Must have 3+ years as a software developer. Proficient in C and C# and BOFs. Should have 1+ years' experience in offensive capability development for Windows environments. Should have 1+ years' experience working in an agile/scrum environment. Special requirements: - Must pass the Defense Threat Reduction Agency (DTRA) Cyber Assessment Red Te
Posted 60+ days ago | Updated 19 days ago

Sr. Software Development Engineer - National Imagery

Esri

•

Vienna, Virginia, USA

Full-time

Overview Apply your software development education and experience as a senior member of our software development team. You will build and release Esri software technologies focused on the intersection between GIS, photogrammetry and remote sensing for the defense and intelligence communities. In this role, you will collaborate with a talented team of software developers and product engineers to create, build, test, and release advanced software technologies focused on imagery users. This is an
Posted 60+ days ago | Updated 10 hours ago

C#/Javascript/SQL Server Fullstack Developer

Case Interactive

•

Remote

Full-time

Title: Software Application Developer Job Description: We are seeking a talented and motivated Software Developer to join our fully remote team. This role involves working with our proprietary full-stack in-house development platform and low-code language to build and maintain database-driven web applications. While experience with our in-house platform and language is not expected, candidates should have a strong background in UI development and database architecture. As part of an agile develo
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Posted 60+ days ago | Updated 9 hours ago

Lead Software Engineer

Costar Group

•

Arlington, Virginia, USA

Full-time

Lead Software Engineer 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 and the NASDAQ 100, 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
Posted 8 days ago | Updated 10 hours ago

Software Engineer

Maxar Technologies Holdings Inc

•

Reston, Virginia, USA

Full-time

Please review the job details below. Project: We're supporting a well-established customer that works on a critical and high-visibility mission. The team is tremendously talented and we need to add a seasoned Software Engineer with dashboard development experience and a strong foundation in improving UI/UX for a growing number of customer requirements. Previous experience working on-site to support the DoD and the intelligence community is highly desirable. Minimum Requirements: Must have activ
Posted 43 days ago | Updated 10 hours ago

QA Automation Engineer

NTT DATA Americas, Inc

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Remote or Carlsbad, California, USA

Contract

Key Skills: Playwright and C#, leveraging BDD frameworks like SpecFlow and Cucumber to align with requirements.NTT DATA's Client is seeking a QA Automation Engineer with 5+ years of experience* Proficient in designing, executing, and maintaining test cases and test plans. * Design, develop, and maintain automated test scripts using Playwright and C#, leveraging BDD frameworks like SpecFlow and Cucumber to align with requirements. * Support API testing, with hands-on experience using Swagger/Open
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Posted 9 days ago | Updated 5 hours ago

Manager, Software Engineering

Costar Group

•

Arlington, Virginia, USA

Full-time

Manager, Software Engineering Job Description 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 and the NASDAQ 100, 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
Posted 10 days ago | Updated 10 hours ago

Software Engineer III

Sierra Nevada Corporation

•

Herndon, Virginia, USA

Full-time

The Emerging Concepts and Technologies (ECT) group at Sierra Nevada Corporation is a cutting-edge technology incubator. Our team fields new, hard problems facing our customers and rapidly delivers capabilities to enable mission success. In this position, you will work with a small multi-disciplinary team to design, model, build, test and deploy solutions to meet customer operational needs and challenges. The Mission Solutions and Technologies (MST) business area provides affordable, turn-key co
Posted 19 days ago | Updated 10 hours ago

Sr. AI Engineer

Capital One

•

McLean, Virginia, USA

Full-time

Sr. AI Engineer At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments in technology infrastructure and world-class talent - along with our deep experience in machine learning - position us to be at the forefront of enterprises leveraging AI. From informing customers about unusual charges to answering their
Posted 1 day ago | Updated 3 hours ago

Lead AI Engineer

Capital One

•

McLean, Virginia, USA

Full-time

Lead AI Engineer At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments in technology infrastructure and world-class talent - along with our deep experience in machine learning - position us to be at the forefront of enterprises leveraging AI. From informing customers about unusual charges to answering their
Posted 1 day ago | Updated 14 hours ago

UiPath /RPA Developers / Fort Belvoir, VA

General Dynamics

•

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Software Development Job Qualifications: Skills: Agile Methodology, Robotic Process Automation, Software Development Life Cycle (SDLC), UiPath (Platform) Certifications: Security+ - CompTIA Experience: 3 + years of related experience ship Required: Yes Job Description: Deliver simple solutions to complex
Posted 47 days ago | Updated 10 hours ago

Senior Offensive Security Engineer

Costar Group

•

Arlington, Virginia, USA

Full-time

Senior Offensive Security Engineer Job Description Offensive Security Engineer 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 and the NASDAQ 100, 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
Posted 60+ days ago | Updated 10 hours ago

Senior AI Engineer

Capital One

•

McLean, Virginia, USA

Full-time

Senior AI Engineer Overview: At Capital One, we are creating responsible and reliable AI systems, changing banking for good. For years, Capital One has been an industry leader in using machine learning to create real-time, personalized customer experiences. Our investments in technology infrastructure and world-class talent - along with our deep experience in machine learning - position us to be at the forefront of enterprises leveraging AI. From informing customers about unusual charges to an
Posted 3 days ago | Updated 7 hours ago

Software Engineer - Submarine and Autonomous Systems

Johns Hopkins Applied Physics Laboratory (APL)

•

Laurel, Maryland, USA

Full-time

Description Are you excited by the challenge of developing ground breaking software for the Navy's next-generation maritime platforms? Do you thrive in fast-paced environment where innovation meets real-world impact? If so, we want you on our team! At APL, we are looking for a hard-working and driven Software Engineer to join our Ocean Systems and Engineering Group. In this role, you'll be at the forefront of designing, developing, and prototyping software solutions that power the Navy's uncrew
Posted 32 days ago | Updated 8 hours ago

Software Engineer, TS/SCI with Full Scope Polygraph Security Clearance Required - G

Next Step Systems

•

Severna Park, Maryland, USA

Full-time

Software Engineer, TS/SCI with Full Scope Polygraph Security Clearance Required, Severna Park, MD The Software Engineer will join a team providing Life Cycle Sustainment (LCS) and modernization activities for commercial and custom-developed education, learning, and training applications supporting the Government enterprise. The candidate must be a strong senior developer that is comfortable digging into the products and developing a subject matter expertise, tackling challenges sometimes withou
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Posted 5 days ago | Updated 1 day ago