Data Scientist jobs in Chantilly hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $196,416/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
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accenturefederal.com • HQ: Arlington, United States • IT Consulting & Digital Transformation • Digital Government • 5000+ employees • Trust B • Hiring 562, 48 new
HQ: Arlington, United States • IT Consulting & Digital Transformation • Digital Government • 5000+ employees • Trust B • Hiring 562, 48 new
Accenture Federal Services is the US federal government business of the global professional services firm Accenture, providing technology, cloud, AI, data and cybersecurity services to defense, national security, public safety, civilian and military health agencies, headquartered in Arlington, Virginia, near Washington, DC. It operates as a wholly owned subsidiary of Accenture and employs more than 13,000 people. Its openings are mostly technical roles such as cloud services engineers, software engineering leads, solution architects, data engineers, CI/CD pipeline engineers, SharePoint specialists, system administrators, test engineers and user experience designers.
avalore.com • HQ: Arlington, United States • Systems Integrators • Engineering Services • 1001-5000 employees • Trust A • Hiring 77, 16 new
HQ: Arlington, United States • Systems Integrators • Engineering Services • 1001-5000 employees • Trust A • Hiring 77, 16 new
Avalore is a US systems engineering and information technology services contractor that supports government programs. Its openings include systems engineers at several levels, test engineers and system administrators, with positions in Arlington, Chantilly, Tysons and Annapolis Junction. The company is headquartered in Arlington, Virginia, United States.
amentum.com • HQ: Chantilly, United States • Military Logistics • Business Process Outsourcing (BPO) • Engineering Services • 5000+ employees • Est. 2020 • Trust B • Hiring 991, 148 new
HQ: Chantilly, United States • Military Logistics • Business Process Outsourcing (BPO) • Engineering Services • 5000+ employees • Est. 2020 • Trust B • Hiring 991, 148 new
Amentum is a US government and critical infrastructure services contractor headquartered in Chantilly, Virginia, providing engineering, technical, mission support and operations services in defense, intelligence, space, energy and environment markets. It has about 50,000 employees in more than 70 countries, is listed on the New York Stock Exchange, and absorbed PAE in 2022 before combining with the Jacobs critical mission solutions business in 2024. Openings include aerospace, GN&C and reliability engineers, aircraft workers, database administrators, software engineers, biometric enrollment specialists and paralegals.
boozallen.com • HQ: McLean, United States • Intelligence • Management Consulting • National Security • IT Consulting & Digital Transformation • 5000+ employees • Est. 1914 • IT services • Trust A • Hiring 1497, 96 new
HQ: McLean, United States • Intelligence • Management Consulting • National Security • IT Consulting & Digital Transformation • 5000+ employees • Est. 1914 • IT services • Trust A • Hiring 1497, 96 new
Booz Allen Hamilton is an American consulting firm founded in 1914 that has spent most of the past century working for the United States government, and today derives almost all of its revenue from federal clients. It supplies technology and mission services to defence, intelligence, civil and health agencies, covering systems engineering, cyber operations, data platforms and increasingly artificial intelligence deployed inside classified environments. Headquartered in McLean, Virginia and listed on the New York Stock Exchange, it employs tens of thousands of security-cleared staff and competes with the other large federal services contractors for multi-year programme awards.
$62k – $141k per year • Middle • 3+ years exp • In office (Chantilly, Colorado Springs, Aurora, United States) • Bachelor's Degree • Full-Time • Top Secret • Middle
peraton.com • HQ: Reston, United States • Systems Integrators • Information Security • Homeland Security • National Security • 1001-5000 employees • Est. 2017 • Trust A • Hiring 923, 123 new
HQ: Reston, United States • Systems Integrators • Information Security • Homeland Security • National Security • 1001-5000 employees • Est. 2017 • Trust A • Hiring 923, 123 new
Peraton is an American national security and technology company that provides systems engineering, IT modernisation, cyber, space and communications services to defense, intelligence, homeland security, civil and health agencies of the US government. Formed in 2017 by Veritas Capital and enlarged in 2021 through the acquisitions of the federal IT and mission support business of Northrop Grumman and of Perspecta, it employs tens of thousands of people across the United States. The company is headquartered in Reston, Virginia, United States.
fantomcorp.com • McLean • Tysons • Chantilly • Fort Meade • Hanover • IT Consulting & Digital Transformation • 201-500 employees • Trust B • Hiring 32, 2 new
McLean • Tysons • Chantilly • Fort Meade • Hanover • IT Consulting & Digital Transformation • 201-500 employees • Trust B • Hiring 32, 2 new
Home About Benefits Contact Us Careers Home About Benefits Contact Us Careers About the Company Fantom Corporation provides high-end information technology (IT) services to federal and commercial clients, offering a wide range of capabilities for any project need.
mantech.com • HQ: Herndon, United States • IT Consulting & Digital Transformation • Information Security • National Security • 1001-5000 employees • Est. 1968 • Trust A • Hiring 449, 80 new
HQ: Herndon, United States • IT Consulting & Digital Transformation • Information Security • National Security • 1001-5000 employees • Est. 1968 • Trust A • Hiring 449, 80 new
ManTech is a Virginia company founded in 1968 that provides technology services to United States defence and intelligence agencies. Its work covers cybersecurity, data analytics, cloud and mission systems engineering. The company employs thousands of cleared technologists.
saic.com • HQ: Reston, United States • Engineering Services • Digital Government • Systems Integrators • 5000+ employees • Est. 2013 • Trust B • Hiring 694, 137 new
HQ: Reston, United States • Engineering Services • Digital Government • Systems Integrators • 5000+ employees • Est. 2013 • Trust B • Hiring 694, 137 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.
j5consulting.co • HQ: Bowie, United States • Information Technology • IT Infrastructure & Networking Services • IT Consulting & Digital Transformation • 201-500 employees • Est. 2006 • Hiring 64
HQ: Bowie, United States • Information Technology • IT Infrastructure & Networking Services • IT Consulting & Digital Transformation • 201-500 employees • Est. 2006 • Hiring 64
Founded in 2006, J5 Consulting is an information technology and cybersecurity consulting firm headquartered in Bowie, Maryland. Drawing on extensive experience supporting federal government, defense, and commercial enterprises, the company delivers mission-critical IT modernization, enterprise architecture, and cyber defense solutions. Its core service offerings span governance, risk management, and compliance (GRC) audits aligned with NIST and CMMC frameworks, multi-cloud security engineering across AWS and Azure, vulnerability assessments, and continuous monitoring designed to safeguard sensitive assets and maintain regulatory compliance.
leidos.com • HQ: Reston, United States • C4ISR • National Security • Engineering Services • Defense Manufacturing • Systems Integrators • 5000+ employees • Est. 2013 • IT services • Trust B • Hiring 1552, 69 new
HQ: Reston, United States • C4ISR • National Security • Engineering Services • Defense Manufacturing • Systems Integrators • 5000+ employees • Est. 2013 • IT services • Trust B • Hiring 1552, 69 new
Leidos is an American technology and engineering services company created in 2013 when Science Applications International Corporation split in two, with Leidos taking the technical services and solutions business. It is one of the largest suppliers to the United States government, working across defence programmes, intelligence systems, civil agencies including the Federal Aviation Administration, and healthcare services for the Department of Veterans Affairs. Headquartered in Reston, Virginia, the company also builds security detection products for airports and borders, and has concentrated recent investment on trusted artificial intelligence and autonomy for mission environments.
$131k – $237k per year • Staff+ • 12+ years exp • In office (Tucson, Saint Louis, Chantilly, Englewood, United States) • Bachelor's Degree • Full-Time • TS/SCI • Citizenship or vetting required • Principal
$131k – $237k per year • Staff+ • 12+ years exp • In office (Chantilly, United States) • Bachelor's Degree • Full-Time • TS/SCI • Citizenship or vetting required • Principal
caci.com • HQ: Reston, United States • Data & Analytics • Cybersecurity • Military • National Security • IT Consulting & Digital Transformation • Intelligence • Electronic Warfare • 5000+ employees • Est. 1962 • IT services • Trust D • Hiring 1848, 77 new
HQ: Reston, United States • Data & Analytics • Cybersecurity • Military • National Security • IT Consulting & Digital Transformation • Intelligence • Electronic Warfare • 5000+ employees • Est. 1962 • IT services • Trust D • Hiring 1848, 77 new
CACI International is an American technology company founded in 1962 that works almost entirely for United States defence, intelligence and federal civilian agencies. It has moved from being a conventional IT services contractor toward supplying its own technology, with a substantial expeditionary electronic warfare and signals intelligence product line, photonics and optical communications for space, and secure network modernisation. Headquartered in Reston, Virginia, the company employs more than twenty thousand people, the majority holding security clearances, and has grown through a steady programme of acquisitions that add differentiated technology rather than headcount alone.
linchpinsoftware.com • HQ: Washington, United States • Custom Software Development • Hiring 5, 1 new
HQ: Washington, United States • Custom Software Development • Hiring 5, 1 new
Capabilities. Web development, specifically J2EE, is a core strength of our team as we have experience in designing, constructing, testing, and maintaining enterprise applications for major federal organizations.
aerospace.org • HQ: El Segundo, United States • National Security • Research Institutes • 1001-5000 employees • Est. 1960 • Trust B • Hiring 415, 49 new
HQ: El Segundo, United States • National Security • Research Institutes • 1001-5000 employees • Est. 1960 • Trust B • Hiring 415, 49 new
The Aerospace Corporation is a federally funded research centre supporting national security space programmes. Its engineers provide launch verification, systems engineering and mission assurance for government satellite projects. The organisation also researches orbital debris, resilient architectures and space policy.
$60k – $100k per year • Middle • 7+ years exp • In office (El Segundo, Chantilly, United States) • Relocation • High School Diploma • Full-Time • Citizenship or vetting required • Middle
$156k – $234k per year • Lead • 12+ years exp • In office (El Segundo, Chantilly, United States) • Relocation • Bachelor's Degree • Full-Time • TS/SCI • Citizenship or vetting required • Staff
grvty.com • HQ: Tysons, United States • Intelligence • National Security • 1001-5000 employees • Est. 2025 • Trust B • Hiring 143, 12 new
HQ: Tysons, United States • Intelligence • National Security • 1001-5000 employees • Est. 2025 • Trust B • Hiring 143, 12 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.
acclaimtechnical.com • HQ: Reston, United States • Recruiting & Staffing • National Security • 51-200 employees • Est. 2000 • Hiring 68, 1 new
HQ: Reston, United States • Recruiting & Staffing • National Security • 51-200 employees • Est. 2000 • Hiring 68, 1 new
Acclaim Technical Services (ATS) is an employee-owned American government contractor headquartered in Reston, Virginia, providing cyber operations, intelligence, language, network infrastructure, engineering and enterprise IT services to the defense and intelligence communities. Founded in 2000 and owned through an employee stock ownership plan, it supports a range of US federal agencies with staff concentrated around Chantilly, Annapolis Junction, McLean and Bethesda. Its openings include AI and machine learning engineers, data scientists, full stack and software developers, system integrators and administrators, infrastructure engineers and UI and UX designers.
theleadingpath.com • HQ: McLean, United States • IT Staffing & Staff Augmentation • Systems Integrators • Trust B • Hiring 16, 3 new
HQ: McLean, United States • IT Staffing & Staff Augmentation • Systems Integrators • Trust B • Hiring 16, 3 new
The Leading Path is a technology services company supporting cleared national security programs with data engineering, systems engineering, cloud and network engineering and software development. Its vacancies require top secret clearances with polygraph and include data engineers, data scientists, cleared network engineers and intelligence recruiters. The company is headquartered in McLean, Virginia, United States.
sosi.com • HQ: Reston, United States • IT Infrastructure & Networking Services • Military Logistics • Translation Services • Intelligence • 1001-5000 employees • Est. 1989 • Trust C • Hiring 219, 1 new
HQ: Reston, United States • IT Infrastructure & Networking Services • Military Logistics • Translation Services • Intelligence • 1001-5000 employees • Est. 1989 • Trust C • Hiring 219, 1 new
SOS International, known as SOSi, is a privately held American government services company founded in 1989 that began by supplying linguists and interpreters to the United States military. It has since broadened into intelligence analysis, logistics and base operations support, information technology and network engineering, and cybersecurity, working for defence, intelligence and federal civilian customers both in the United States and in deployed locations. Headquartered in Reston, Virginia and still family owned, it employs several thousand people, a large share of them holding security clearances.
markonsolutions.com • HQ: Falls Church, United States • Facilities Management • IT Consulting & Digital Transformation • Intelligence • 1001-5000 employees • Est. 2007 • Hiring 148, 2 new
HQ: Falls Church, United States • Facilities Management • IT Consulting & Digital Transformation • Intelligence • 1001-5000 employees • Est. 2007 • Hiring 148, 2 new
Markon Solutions is a government services contractor headquartered in Falls Church, Virginia, supporting the intelligence community, defense agencies and federal civilian customers with cyber, digital transformation, engineering and facilities management work. A repeated Washington Post Top Workplace, it staffs programs at Fort Meade, Annapolis Junction, Chantilly, McLean and Herndon, and supports naval nuclear work in West Mifflin and Niskayuna. Hiring covers software developers, systems and network engineers, data scientists, target analysts, civil, structural and electrical engineers, facility managers, space auditors and accountants.
anavationllc.com • HQ: Reston, United States • Cloud Consulting & Migration • Intelligence • National Security • 51-200 employees • Est. 2013 • Trust B • Hiring 55, 6 new
HQ: Reston, United States • Cloud Consulting & Migration • Intelligence • National Security • 51-200 employees • Est. 2013 • Trust B • Hiring 55, 6 new
AnaVation is an American government technology contractor that provides cloud engineering, software development, data analytics and cybersecurity services to US national security, intelligence and defense agencies. Founded in 2013, it supports mission programs with cloud developers, infrastructure engineers and program staff working in the Washington, DC area, Virginia, Texas and Alabama. The company is headquartered in Reston, Virginia, United States.
redhorsecorp.com • HQ: Arlington, United States • Defense AI • National Security • Analytics & BI Consulting • IT Consulting & Digital Transformation • 201-500 employees • Est. 2008 • Trust B • Hiring 61, 4 new
HQ: Arlington, United States • Defense AI • National Security • Analytics & BI Consulting • IT Consulting & Digital Transformation • 201-500 employees • Est. 2008 • Trust B • Hiring 61, 4 new
Redhorse Corporation is a US government services contractor headquartered in Arlington, Virginia, that provides data analytics, artificial intelligence, cybersecurity, digital transformation and mission support to national security, intelligence and law enforcement agencies. Founded in 2008 by retired Marine Corps colonel David Inman and led by chief executive Noah Klemm, it acquired Allied Associates International and supports clients such as the Chief Digital and AI Office, the Air Force and the Department of Energy. It hires program managers, software and data engineers, cybersecurity engineers, intelligence and policy analysts, instructional designers and administrative staff.
