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The 30 largest consulting firms in Reston

Tamtam tracks 30 consulting firms headquartered in Reston. This list ranks all of them by number of employees on LinkedIn, led by SAIC, ICF and SOSi. Their median headcount is 324. Half of them were founded in 2002 or later.

馃嚭馃嚫 Reston30 companiesUpdated Nov 2, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
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 馃嚭馃嚫 Reston 36,645 1969
2
ICFicf.com

Global provider combining expertise and technology to solve complex challenges, support change management, and shape future strategies for clients.

Business Consulting and Services 馃嚭馃嚫 Reston 10,724 1969
3
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 馃嚭馃嚫 Reston 3,124 1989
4
Bowman Consultingbowman.com

A national engineering services provider delivering infrastructure solutions to customers in various regulated end markets, with expertise in planning, engineering, and environmental consulting

Engineering Services 馃嚭馃嚫 Reston 2,221 1995
5
GuidePoint Securityguidepointsecurity.com

Elite team of certified experts providing holistic cybersecurity solutions, guiding organizations to make informed decisions, choose appropriate products, and optimize resources

IT Services and IT Consulting 馃嚭馃嚫 Reston 1,364 2011
6
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 馃嚭馃嚫 Reston 1,313 1996
7
Tkxelcareers.tkxel.com

Tkxel is a USA-based software development company providing innovative solutions like AI, IoT, and cybersecurity to help businesses achieve their digital transformation goals globally

IT Services and IT Consulting 馃嚭馃嚫 Reston 1,264 2008
8
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 馃嚭馃嚫 Reston 768 1982
9
Systems Engineering Services Corporation (SESC)sesc.com

Provider of technology solutions specializing in program management, application development, systems integration, mobile development, virtualization, and systems security for various industries

IT Services and IT Consulting 馃嚭馃嚫 Reston 681 1989
10
Brillient Corporationbrillient.net

An award-winning company specializing in full spectrum digital transformation, helping clients achieve efficiencies and lower costs through government and IT modernization initiatives

IT Services and IT Consulting 馃嚭馃嚫 Reston 556 2006
11
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 馃嚭馃嚫 Reston 458 1987
12
Amyx, Inc.amyx.com

A management and technical solutions provider for Federal Government clients, offering program management, systems engineering, enterprise architecture, and business process transformation services

IT Services and IT Consulting 馃嚭馃嚫 Reston 437 1999
13
Collaborative Solutions, LLCcollaborativesolutions.com

A global consultancy specializing in Finance and HR Transformation, leveraging cloud solutions to deliver successful outcomes for clients worldwide

IT Services and IT Consulting 馃嚭馃嚫 Reston 437 n/a
14
1Rivet1rivet.com

An award-winning IT Strategy & Consulting firm offering custom Cloud, Application Modernization, and Advanced Analytics solutions to public and private sector clients globally

IT Services and IT Consulting 馃嚭馃嚫 Reston 405 2005
15
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 馃嚭馃嚫 Reston 324 1981
16
YRCIyrci.com

A veteran-owned professional services firm providing Human Capital, Acquisition Support, and Financial Services to federal and commercial customers nationwide

Business Consulting and Services 馃嚭馃嚫 Reston 313 2001
17
GTA (Global Technology Associates) - A Kelly Telecom Companygtatelecom.com

The company provides telecom engineering solutions for legacy, 5G, and private networks through staffing, scope of work, and direct hire services

Telecommunications 馃嚭馃嚫 Reston 282 2006
18
Modus Createmoduscreate.com

Specializing in digital transformation, our global team helps clients innovate and build competitive advantage through strategic consulting, product development, and platform modernization

IT Services and IT Consulting 馃嚭馃嚫 Reston 270 n/a
19
Golden Key Groupgoldenkeygroup.com

A trusted professional services firm assisting federal government with strategic, organizational, and operational challenges in human resources, human capital, learning, and development

Human Resources Services 馃嚭馃嚫 Reston 249 2002
20
Pantheon Incpantheon-inc.com

Specializing in products, software development, consulting, and support services, we have centers of excellence focused on various technology solutions Trusted by Fortune 100 companies worldwide

IT Services and IT Consulting 馃嚭馃嚫 Reston 233 1997
21
Vivid Edge Corpvivid-edge.com

A premier services provider specializing in deploying Oracle applications, Integration technology, MetricStream GRC, Enterprise Data Management, and Predictive Analytics solutions globally

IT Services and IT Consulting 馃嚭馃嚫 Reston 109 2006
22
Plumlogix (MBE Salesforce Partner)plumlogix.com

A technology-driven Salesforce Service company with a global team of consultants offering tailored solutions for digital transformation and business value

IT Services and IT Consulting 馃嚭馃嚫 Reston 68 2016
23
BreakForth Solutions, Inc. ED/WOSBbreakforthsolutions.com

Results-focused provider of technical and professional services specializing in Engineering, Data Analytics, IT Business Solutions, and Professional Services for federal agencies and government contractors

IT Services and IT Consulting 馃嚭馃嚫 Reston 53 2012
24
InfiniSource Consulting Solutions, Inc.icsfederal.com

Leading provider of Management Consulting, Information Technology, and Professional services to federal government, tailored to meet diverse client needs with PMBOK methodology

Government Relations Services 馃嚭馃嚫 Reston 46 2008
25
Confianceconfiancegroup.com

Global provider of business transformation solutions for commercial and government organizations through consulting, training, technology, and managed services to achieve efficiency and improved service

IT Services and IT Consulting 馃嚭馃嚫 Reston 44 n/a
26
Centrifuge LLCcentrifugecorp.com

Transforming data into decisions through collaboration, innovative data management, analytics, and business intelligence to save clients time and money globally

IT Services and IT Consulting 馃嚭馃嚫 Reston 34 2007
27
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 馃嚭馃嚫 Reston 34 2003
28
KYM ADVISORS, INC.kymadvisors.com

Specializes in data sciences, cybersecurity, information sharing, IT modernization, cloud strategy, and agile program delivery for clients.

IT Services and IT Consulting 馃嚭馃嚫 Reston 26 2010
29
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 馃嚭馃嚫 Reston 10 1985
30
ERP Doctorserpdoctors.com

A digital transformation consulting firm specializing in ERP systems like Infor CloudSuite, Microsoft Dynamics, Oracle Netsuite, and SAP S/4HANA, with successful implementations in North America

IT Services and IT Consulting 馃嚭馃嚫 Reston 5 2003

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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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