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Top 32 aerospace and defence companies in Reston

Tamtam tracks 32 aerospace and defence companies headquartered in Reston. This list ranks all of them by number of employees on LinkedIn, led by General Dynamics UK, Leidos and SAIC. Their median headcount is 620. Half of them were founded in 1997 or later.

๐Ÿ‡บ๐Ÿ‡ธ Reston32 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
General Dynamics UKgd.com

A global company focusing on safety and security, producing a range of products from business jets to submarines with a culture of continuous improvement

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 100,000 1952
2
Leidosleidos.com

Global technology leader providing digital mission innovations and efficient technical services for government and commercial customers through a diverse, flexible work environment.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 37,171 1969
3
SAICbit.ly

Advanced technology mission integrator delivering secure high-end solutions in mission IT, enterprise IT, engineering, and professional services for defense, space, and intelligence.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 36,645 1969
4
CACI International Inccaci.com

providing advanced technology and expert services to address complex national security challenges for government and defense sectors

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 22,223 1962
5
Peratonperaton.com

A company at the forefront of solving global challenges with innovative solutions, prioritizing safety and security through fresh perspectives and talent

Technology, Information and Internet ๐Ÿ‡บ๐Ÿ‡ธ Reston 18,000 2017
6
ASRC Federalasrcfederal.com

Providing technology and expertise to federal defense and civilian agencies, supporting missions from space exploration to cybersecurity and infrastructure.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 5,051 2003
7
SOSisosi.com

Delivering transformational technology and mission solutions for aerospace, defense, and government services clients while addressing modern challenges through trusted industry leadership.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 3,124 1989
8
Engility Corporationsaic.com

A premier technology integrator based in Reston, Virginia, providing information about SAIC through their linkedin page

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 1,414 n/a
9
Noblisnoblis.org

A nonprofit organization providing scientific, technology, and strategy services to government and industry clients in national security, healthcare, and environmental sustainability

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 1,313 1996
10
Tyto Athene, LLCgotyto.com

Specializing in mission-focused digital transformation, our experts offer expertise in Network Modernization, Hybrid Cloud, Cyber Security, and Enterprise IT for defense and security sectors

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 967 2018
11
NCI Information Systems, Inclinkedin.com

The company, now known as Empower AI, specializes in artificial intelligence technology Follow their LinkedIn page for updates

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 936 1989
12
Synergysynergybis.com

Federal IT firm specializing in cloud, low/no code SaaS platforms, delivering agile MVP solutions to accelerate agency modernization goals.

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 865 2005
13
AIS (Applied Information Sciences)ais.com

IT transformation firm specializing in compliant cloud and data solutions for large enterprises, governments, and defense agencies, driving innovation and modernization

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 768 1982
14
L-3 National Security Solutionscaci.com

A company that was acquired by CACI International Inc on February 1, 2016, specializing in national security solutions Visit https://wwwlinkedincom/company/caci-international-inc

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 729 1997
15
Sallyport Globalacuityinternational.com

Global provider of security and mission support solutions tailored for security and stability operations worldwide, focused on exceeding customer requirements with core values of integrity and quality

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 704 2003
16
MetroStarmetrostar.com

Leading provider of secure digital transformation and AI-enabled products and solutions, specializing in delivering cutting-edge IT services to government agencies and defense organizations.

Software Development ๐Ÿ‡บ๐Ÿ‡ธ Reston 620 1999
17
Aleut Federalaleutfederal.com

A federal services company under The Aleut Corporation offering technology, environmental, construction, and infrastructure services through SBA-certified subsidiaries

Professional Services ๐Ÿ‡บ๐Ÿ‡ธ Reston 504 n/a
18
Empower AIempower.ai

Empower AI specializes in boosting workforce productivity for federal agencies through tailored solutions, enabling faster decision-making and mission advancement

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 468 1989
19
HydroGeoLogic, Inc.hgl.com

Employee-owned company with 36 years of experience providing innovative engineering and remediation solutions to reverse environmental impacts, restore natural resources, and support clients

Environmental Services ๐Ÿ‡บ๐Ÿ‡ธ Reston 458 1987
20
KIHOMACkihomac.com

An aerospace and defense acquisition and technology company, offering system acquisition and life cycle management support to government agencies

Aviation and Aerospace Component Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 388 2003
21
Titan Corporationl3harris.com

Former defense contractor turned technology company, specializing in wireless communications, information systems, and electron beam technology for food safety Acquired by L-3 Communications in 2005

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 355 1981
22
ISIisidefense.com

A leader in security for government contractors, offering tailored solutions, compliance support, expertise in CMMC, clearances, software, and security empowerment

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 340 2010
23
Evolverevolverinc.com

A technology company offering IT transformation and cybersecurity services to government and commercial clients, focusing on security, innovation, and operational efficiency

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 325 2000
24
Whitney, Bradley & Brown (WBB)wbbinc.com

A government and public sector solutions provider focused on innovative advances in technology and methodologies to meet client challenges effectively

Business Consulting and Services ๐Ÿ‡บ๐Ÿ‡ธ Reston 324 1981
25
TIAGยฎtiag.net

Innovative technology solutions provider for public sector and Department of Defense, delivering value through expertise, creativity, and commitment to excellence

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 308 1999
26
Xator Corporationparsons.com

Provider of mission-focused C4ISR solutions for US Government clients, specializing in intelligence, critical infrastructure protection, training, and strategic management

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 267 2005
27
SES Space & Defensesessd.com

Equipping governments with integrated satellite and connectivity solutions, delivering resilient, future-proof capabilities across every mission, landscape, and orbit.

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 250 1973
28
Metron Inc.metsci.com

Provider of research, scientific, and software solutions for government and commercial markets Specializing in data analytics, autonomous solutions, and remote sensing systems

Defense and Space Manufacturing ๐Ÿ‡บ๐Ÿ‡ธ Reston 242 1984
29
Data Machinesdatamachines.com

A data analytics company specializing in cloud architectures, solving complex problems in data analytics, DevSecOps, machine intelligence, and data science

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 45 2016
30
Johnson Technology Systems, Inc. (JTSi)jtsusa.com

An IT and Engineering Services provider specializing in delivering mission-critical professional IT services, with a focus on SAP/ERP solutions for the Public Sector

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 34 2003
31
MP Data LLC (USA)mpdata-llc.com

Small Business specializing in application development, data, cloud computing, and professional services for government agencies 15 years of experience delivering cost-effective IT solutions

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 17 2017
32
Systems Development and Analysissystemsdev.com

This company focuses on clients' missions, providing independent and innovative technology solutions at the interfaces of IT, business, and operations

IT Services and IT Consulting ๐Ÿ‡บ๐Ÿ‡ธ Reston 10 1985

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 2, 2026.

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