Data Scientist jobs in McLean hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $213,779/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
bcore.com · McLean · Springfield · Saint Louis · Reston · Herndon · Intelligence · IT Consulting & Digital Transformation · 201-500 employees · Hiring 46, 5 new
McLean · Springfield · Saint Louis · Reston · Herndon · Intelligence · IT Consulting & Digital Transformation · 201-500 employees · Hiring 46, 5 new
Bcore is an American defense and intelligence contractor delivering enterprise IT, cloud, DevSecOps, systems engineering, software development and intelligence analysis to national security customers. Organised into Insight Solutions, Labs and Mission Services divisions, it staffs programs in Northern Virginia, including Herndon, Chantilly, McLean and Springfield, and in Saint Louis, Missouri, where many roles require TS/SCI clearance. Openings include ServiceNow, cloud, HPC and DevSecOps engineers, systems administrators, cyber security systems engineers, software and Python developers, UI and UX designers, technical writers and project managers.
theswiftgroup.com · HQ: Reston, United States · Military · Government · National Security · Homeland Security · 1001-5000 employees · Trust A · Hiring 102, 1 new
HQ: Reston, United States · Military · Government · National Security · Homeland Security · 1001-5000 employees · Trust A · Hiring 102, 1 new
Headquartered in Reston, Virginia, United States, The Swift Group is a national security technology and mission support contractor specializing in advanced engineering and operational advisory for the defense and intelligence sectors. The enterprise delivers tailored technical capabilities spanning high-performance computing (HPC) research and systems architecture, custom software development, applied data science, cyber enablement, advanced energetics, and operator-led tactical training.
saic.com · HQ: Reston, United States · Engineering Services · Digital Government · Systems Integrators · 5000+ employees · Est. 2013 · Trust B · Hiring 740, 99 new
HQ: Reston, United States · Engineering Services · Digital Government · Systems Integrators · 5000+ employees · Est. 2013 · Trust B · Hiring 740, 99 new
SAIC delivers technology integration and mission services to government agencies. Its work spans enterprise information technology, space systems, engineering and digital modernisation. The company is one of the largest federal services contractors.
grvty.com · HQ: Tysons, United States · Intelligence · National Security · 1001-5000 employees · Est. 2025 · Trust B · Hiring 147, 16 new
HQ: Tysons, United States · Intelligence · National Security · 1001-5000 employees · Est. 2025 · Trust B · Hiring 147, 16 new
GRVTY is a US national security company that delivers mission and technical expertise in space, spectrum and cyber to defence and intelligence customers. Its programs involve software development on large-scale data platforms, GEOINT collection and analysis, signals intelligence training and vulnerability research, with work performed at customer sites such as Herndon and Springfield in Virginia and Annapolis Junction in Maryland. It hires cleared software engineers, big data analysts, Android and iOS developers, UI/UX developers, test and integration engineers, GEOINT analysts and technical training instructors, most roles requiring TS/SCI clearance.
appian.com · HQ: McLean, United States · Workflow & Process Automation (RPA, BPM) · Low-Code & No-Code Platforms · 1001-5000 employees · Est. 1999 · NASDAQ: APPN · Trust B · Hiring 153, 10 new
HQ: McLean, United States · Workflow & Process Automation (RPA, BPM) · Low-Code & No-Code Platforms · 1001-5000 employees · Est. 1999 · NASDAQ: APPN · Trust B · Hiring 153, 10 new
Established in 1999, Appian is a cloud computing and enterprise software company helping organizations build apps and workflows rapidly, with a low-code automation platform. Appian is headquartered in McLean, Virginia.
node.digital · HQ: Leesburg, United States · AI Agents · Workflow & Process Automation (RPA, BPM) · 51-200 employees · Trust B · Hiring 16, 3 new
HQ: Leesburg, United States · AI Agents · Workflow & Process Automation (RPA, BPM) · 51-200 employees · Trust B · Hiring 16, 3 new
Node.Digital is a digital automation and AI engineering firm based in Leesburg, Virginia, that builds intelligent automation, agentic AI, AI-powered software delivery, document processing and data fusion solutions for government and commercial clients. It pairs solution accelerators with forward-deployed engineers, and works largely on federal programs through contract vehicles, with staff in Northern Virginia, Washington and Texas. Hiring centers on RPA and UiPath developers, AI/ML engineers and data scientists, data architects, cloud and DevOps engineers, cyber and forensic analysts, incident managers and program managers.
kbr.com · HQ: Houston, United States · Space Services · Military Logistics · Engineering Services · 5000+ employees · Est. 1998 · Trust B · Hiring 1499, 56 new
HQ: Houston, United States · Space Services · Military Logistics · Engineering Services · 5000+ employees · Est. 1998 · Trust B · Hiring 1499, 56 new
KBR is an engineering, science and technology company headquartered in Houston, Texas, delivering government services, defense and space mission support, process technology licensing and engineering for energy, chemicals and infrastructure projects. Listed on the New York Stock Exchange, it works across the United States, the United Kingdom, Australia and the Middle East, and in September 2025 announced the spin-off of its Mission Technology Solutions business into a separate public company. It hires process, piping, instrumentation, structural and HSE engineers, project and construction managers, logistics and commercial specialists, and finance, tax and IT staff.
exiger.com · HQ: McLean, United States · Supply Chain AI · RegTech, AML & Compliance · Supply Chain & Logistics Software · 501-1000 employees · Est. 2013 · Trust A · Hiring 51, 2 new
HQ: McLean, United States · Supply Chain AI · RegTech, AML & Compliance · Supply Chain & Logistics Software · 501-1000 employees · Est. 2013 · Trust A · Hiring 51, 2 new
Exiger is a supply chain risk management and procurement software company based in McLean, Virginia, whose AI platform 1Exiger gives corporations, banks and government agencies visibility into suppliers, parts, compliance and third-party risk. Founded in 2013, it has more than 850 employees in 10 offices, reports over 550 customers including 150 Fortune 500 companies and more than 80 government and defense organizations, and is FedRAMP authorized. Openings include software, platform, database and site reliability engineers, investigative and supply chain risk analysts, multilingual research associates, customer success managers and federal account executives.
gdit.com · HQ: Falls Church, United States · Government · Military · Professional Services · National Security · Digital Government · IT Consulting & Digital Transformation · Systems Integrators · 5000+ employees · Est. 2006 · Trust A · Hiring 989, 102 new
HQ: Falls Church, United States · Government · Military · Professional Services · National Security · Digital Government · IT Consulting & Digital Transformation · Systems Integrators · 5000+ employees · Est. 2006 · Trust A · Hiring 989, 102 new
General Dynamics Information Technology, known as GDIT, is the technology services division of the defence contractor General Dynamics and one of the largest suppliers of IT to the United States federal government. It designs, builds and operates networks, cloud environments, cybersecurity and mission applications for defence, intelligence, homeland security and civilian agencies, work that requires a very large security-cleared workforce. The division roughly doubled in scale through the 2018 acquisition of CSRA, and has since concentrated on cloud migration, zero trust architecture and applying artificial intelligence inside accredited government environments.
thomsonreuters.com · HQ: Toronto, Canada · RegTech, AML & Compliance · News Agencies · Accounting & Tax Software · Legal Software · 5000+ employees · Est. 2008 · Trust A · Hiring 464, 62 new
HQ: Toronto, Canada · RegTech, AML & Compliance · News Agencies · Accounting & Tax Software · Legal Software · 5000+ employees · Est. 2008 · Trust A · Hiring 464, 62 new
Thomson Reuters is a Canadian information company created in 2008 when the Thomson Corporation acquired the British news and data group Reuters, and it now sells research, workflow software and analytics rather than raw information. Its largest businesses serve law firms and corporate counsel through Westlaw and Practical Law, tax and accounting professionals through Checkpoint and ONESOURCE, and corporate risk and compliance teams through screening and investigation products, alongside the Reuters news agency. Headquartered in Toronto and listed in Toronto and New York, it has invested heavily in generative assistants embedded directly in those professional workflows.
aperioglobal.com · HQ: Fort Meade, United States · Artificial Intelligence · Information Security · Cybersecurity · Likely startup · Trust A · Hiring 16
HQ: Fort Meade, United States · Artificial Intelligence · Information Security · Cybersecurity · Likely startup · Trust A · Hiring 16
Aperio Global transforms data to enable operational decision-making to solve emerging challenges in cybersecurity, information analysis, and every task that comes next.
fantomcorp.com · HQ: Leesburg, United States · IT Infrastructure & Networking Services · IT Consulting & Digital Transformation · Trust B · Hiring 40, 8 new
HQ: Leesburg, United States · IT Infrastructure & Networking Services · IT Consulting & Digital Transformation · Trust B · Hiring 40, 8 new
Fantom Corporation is an American IT services contractor that supports federal, defence and intelligence community programmes as well as commercial clients. It provides network engineering, data architecture, cloud, software development and systems administration, with staff in Chantilly, Hanover and McLean. The company is headquartered in Leesburg, Virginia, United States.
range.com · HQ: McLean, United States · Investing Apps & Robo-Advisors · Wealth Management & Financial Advisors · 501-1000 employees · Est. 2021 · Startup · Trust C · Hiring 64
HQ: McLean, United States · Investing Apps & Robo-Advisors · Wealth Management & Financial Advisors · 501-1000 employees · Est. 2021 · Startup · Trust C · Hiring 64
Range is a McLean, Virginia-based wealth management firm that combines a team of certified financial planners with an AI-assisted software platform covering investments, taxes, equity compensation, estate planning and retirement for households on a flat membership fee rather than a percentage of assets. Founded in 2021 by Fahad and David, the latter a former Amazon engineer, it has raised more than 100 million dollars and also has offices in New York and Bellevue, Washington. It hires financial planners, investment operations and tax staff, software, security and data engineers, product leaders and finance, legal and people operations roles.
kda-consulting.com · HQ: Chantilly, United States · IT Consulting & Digital Transformation · 51-200 employees · Trust B · Hiring 8
HQ: Chantilly, United States · IT Consulting & Digital Transformation · 51-200 employees · Trust B · Hiring 8
KDA Consulting was founded to give technologists the flexibility to solve challenges, push boundaries, and deliver mission needs differently. We prioritize client success, reliability, innovation, and excellence.
