C# Jobs in Fairfax, VA

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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 3 hours ago

Web Developer (TS/SCI clearance)

ALTA IT Services

•

Quantico, Virginia, USA

Full-time

Web Developer Quantico, VA - 100% onsite TS/SCI clearance Major Duties & Responsibilities: Administer, develop, and test web-based applications using Oracle Application Express (APEX). Write, test, and optimize complex SQL and PL/SQL queries and procedures. Troubleshoot and resolve issues related to Oracle APEX applications, databases, and environments. Stay up to date with new Oracle APEX features and best practices. Modify previously written source code to add enhancements, fix problems, and
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Posted 6 days ago | Updated 7 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 14 days ago | Updated 7 hours ago

Full Stack Developer (Golang/Java)

ALTA IT Services

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Washington, District of Columbia, USA

Full-time

Full Stack Developer (Golang/Java) Remote (with a possibility to become hybrid in the Washington, DC metro area once needed) Direct Hire ship is required per government contract Must be able to obtain a DHS Final Suitability clearance Responsibilities: Develop, deploy, and maintain mission-critical applications using Go/Golang, Java, C# and C++. Provide expert support and technical advice during the conceptualization, development, and implementation phases, transforming requirements into inno
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Posted 6 days ago | Updated 7 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 1 day ago | Updated 3 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 1 day ago | Updated 3 hours ago

Software Test Engineer

Lockheed Martin Corporation

•

Herndon, Virginia, USA

Full-time

Job Description Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solutio
Posted 5 days ago | Updated 10 hours ago

Senior Lead AI Engineer

Capital One

•

McLean, Virginia, USA

Full-time

Senior Lead 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
Posted 1 day ago | Updated 3 hours ago

UiPath /RPA Developers / Fort Belvoir, VA

General Dynamics Information Technology

•

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: NoneExperience: 3 + years of related experienceship Required: Yes Job Description: Deliver simple solutions to complex problems as a UiPath
Posted 60+ days ago | Updated 7 hours ago

Senior Engineer, Software (R3589)

Shield AI Inc

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Washington, District of Columbia, USA

Full-time

Founded in 2015, Shield AI is a venture-backed defense technology company with the mission of protecting service members and civilians with intelligent systems. Its products include the V-BAT aircraft, Hivemind Enterprise, and the Hivemind Vision product lines. With offices in San Diego, Dallas, Washington, D.C., Abu Dhabi (UAE), Kyiv (Ukraine), and Melbourne (Australia), Shield AI's technology actively supports U.S. and allied operations worldwide. For more information, visit Follow Shield AI
Posted 15 days ago | Updated 10 hours ago

Senior Cyber Capability Developer (Reverse Engineer)

Leidos

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Lorton, Virginia, USA

Full-time

Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. The Leidos National Security Sector combines technology-enabled services and mission software capabilities in the area
Posted 27 days ago | Updated 10 hours ago

Lead, Systems Integration Engineering (UAV)

Harris Corporation

•

Ashburn, Virginia, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie
Posted 46 days ago | Updated 10 hours ago

Senior Engineering Manager / Software - Flight Simulation (Onsite)

RTX Corporation

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Sterling, Virginia, USA

Full-time

Date Posted: 2025-06-27 Country: United States of America Location: HVA34: Sterling, VA 22640 Davis Dr , Sterling, VA, 20164-7104 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Secret Senior Engineering Manager / Software - Flight Simulation (Onsite) The Simulation & Training Solutions (STS) Software Engineering de
Posted 4 days ago | Updated 10 hours ago

Secret Cleared Microsoft PowerApps/Dynamics Developer

ALTA IT Services

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Arlington, Virginia, USA

Full-time

Job Title: Secret Cleared Microsoft PowerApps/Dynamics Developer Location: Arlington, VA Type: Contract To Hire Compensation: 130-160K Contractor Work Model: Onsite Security Clearance: Secret clearance is required Job Description: ALTA IT Services is seeking a Microsoft PowerApps/Dynamics Developer! You will join a team that uses PowerApps and Dynamics 365 to develop and deploy applications in our Dynamics/365 environment (Azure GCC). You'll provide software engineering and development support
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Posted 6 days ago | Updated 7 hours ago

Senior Avaya Engineer | Remote | Contract

Walker Healthforce

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Remote

Contract

Senior Software Engineer (AVAYA Integration & Automation, .NET, C#) | Government Clearance Required | 8+ years of Experience | Remote | Contract Walker Healthforce is seeking a Senior Software Engineer with 8+ years of experience to support a healthcare client. Candidates should have a strong background in development w/ direct knowledge of AVAYA automation and integration, .NET technologies, C#, and Microsoft SQL Server. This is a 4-month contract with potential for extensions. START DATE:ASAP
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Posted 32 days ago | Updated 6 days ago

Software Technical Lead

Jacobs

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Herndon, Virginia, USA

Full-time

Are you interested in using your skills to help shape the Cyber, Security, & Intel space? If so, look no further. Amentum is seeking a Software Technical Lead to join our team of passionate individuals in Herndon, VA. In this role you will support challenging, mission-critical projects that make a direct impact on the Nation's security and intelligence mission. Your Impact: We are seeking a highly skilled Technical Lead to spearhead software development initiatives within our dynamic team. The
Posted 57 days ago | Updated 10 hours ago

Systems Administrator Senior

General Dynamics

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Springfield, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Information Technology (IT) Systems, Microsoft Windows, Red Hat Enterprise Linux (RHEL) Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Systems Administrator Senior Transform technology into opportunity as a System
Posted 14 days ago | Updated 10 hours ago

Mid System Software Developer

Booz Allen Hamilton

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Quantico, Virginia, USA

Full-time

Job Number: R0221239 System Software Developer, Mid The Opportunity: As a full-stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just develop software, but to help create a system that will make a difference, we need you on our team. We're looking for a developer like you with the skills needed to develop software and systems from vision to production-ready. This role is more than just coding. As a
Posted 19 days ago | Updated 11 hours ago

MICROSOFT DYNAMICS 365 DEVELOPER

URSI Technologies Inc.

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Remote

Full-time

MICROSOFT DYNAMICS 365 DEVELOPER Baltimore, MD- Remote Duration : 12 months Job description : The individual in this role will work closely with functional consultants, business stakeholders, and other developers to deliver scalable and high-performing business applications that align with organizational goalsThe employee is periodically moving/pushing/transporting 30 poundsRequirements for the Microsoft Dynamics 365 Developer position : Strong understanding of business processes in sales and
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Posted 6 days ago

Software Developer

ALTA IT Services

•

Chantilly, Virginia, USA

Full-time

ALTA IT has a Direct Hire position open for a Software Developer. Top Secret with ability to obtain a CI Poly Alexandria, Chantilly or St. Louis Software Developer to provide software maintenance and engineering support under the Foundation Sustainment Services contract. Responsibilities: This role is responsible for Corrective, Adaptive, Preventive, and Perfective maintenance of maritime systems software. This role uses best practices and patterns to perform design, development, and automated t
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Posted 6 days ago | Updated 7 hours ago