Company lists · Data refreshed October 2026

Top 25 Defense contractor engineering consulting companies based in the United States

Name: Defense contractor engineering consulting companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 11, 2026 2,749 companies tracked

RevenueBase identified 2,749 company matches for defense contractor engineering consulting companies associated with the United States as of October 2026 and tracks 271,204 professional contacts across them, including 28,776 with verified work emails. Huntsville is the largest hub.

This list covers company matches for defense contractor engineering consulting companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 11, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 11, 2026 How this list was built

2,749Companies

271,204Contacts tracked

28,776Verified emails

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The 25 largest defense contractor engineering consulting companies based in the United States

Ranked by team size

Top 25 of 2,749 company matches for defense contractor engineering consulting companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 11, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Northrop Grumman	Exact match	Falls Church, VA, United StatesHQ recorded Oct 11, 2026	10001+	76,380 contacts →
	Exact match “We are a close-knit community of big thinkers collaborating to keep the world safe.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
2	Raytheon	Exact match	Arlington, VA, United StatesHQ recorded Oct 11, 2026	10001+	44,552 contacts →
	Exact match “Raytheon, an RTX business, creates next-generation defense solutions that are smarter, faster and better than previously thought possible.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
3	BAE Systems, INC	Exact match	Falls Church, VA, United StatesHQ recorded Oct 11, 2026	10001+	13,705 contacts →
	Exact match “Improving the future and protecting lives is an ambitious mission, but it’s what we do.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
4	Dyncorp International	Exact match	Mclean, VA, United StatesHQ recorded Oct 11, 2026	10001+	11,065 contacts →
	Exact match “DynCorp International is now part of Amentum.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
5	Leonardo DRS	Exact match	Arlington, VA, United StatesHQ recorded Oct 11, 2026	5,001-10,000	6,372 contacts →
	Exact match “Leonardo DRS Inc.(Nasdaq: DRS) is at the forefront of developing transformative defense technologies using its proven agility and delivering innovative solutions for U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
6	ARA	Exact match	Albuquerque, NM, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,805 contacts →
	Exact match “Applied Research Associates, Inc.(ARA) is the company that government and industry turn to for innovative technologies and solutions to problems that improve our safety, security…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
7	AEGIS	Exact match	Seattle, WA, United StatesHQ recorded Oct 11, 2026	n/a	2,454 contacts →
	Exact match “Aegis provides custom engineering and technology development services to a broad array of clients, including Fortune 100 companies, the U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
8	Textron Systems	Exact match	Haslet, TX, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,088 contacts →
	Exact match “Textron Systems has been providing innovative solutions to the defense, homeland security and aerospace communities for more than 50 years.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
9	Modern Technology Solutions, Inc. Mtsi	Exact match	Alexandria, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	2,015 contacts →
	Exact match “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
10	American Systems	Exact match	Mclean, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,982 contacts →
	Exact match “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
11	Exponent	Exact match	Menlo Park, CA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,628 contacts →
	Exact match “In an era of accelerating change, Exponent is the only premium engineering and scientific consulting firm with the depth and breadth of expertise to solve our clients’ most…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
12	Thales Defense & Security, INC	Exact match	Clarksburg, MD, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,516 contacts →
	Exact match “Thales Defense & Security, Inc.(TDSI) Headquartered in Clarksburg, MD, Thales Defense & Security, Inc.(TDSI) is a U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
13	Csra INC	Exact match	Falls Church, VA, United StatesHQ recorded Oct 11, 2026	10001+	1,503 contacts →
	Exact match “General Dynamics Information Technology and CSRA have united to create the premier provider of high-tech IT solutions to the government IT market.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
14	Davey Resource Group, INC	Exact match	Kent, OH, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,416 contacts →
	Exact match “Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
15	COLSA	Exact match	Huntsville, AL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,326 contacts →
	Exact match “COLSA Corporation is an engineering and support services company founded in 1980.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
16	VT Group VTG	Exact match	Alexandria, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,211 contacts →
	Exact match “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
17	Agile Defense	Exact match	Mclean, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,082 contacts →
	Exact match “Agile Defense: Always Evolving Agile Defense stands at the forefront of innovation, driving advanced capabilities and solutions tailored to the most critical national security and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
18	Radiance Technologies	Exact match	Huntsville, AL, United StatesHQ recorded Oct 11, 2026	1,001-5,000	1,064 contacts →
	Exact match “Radiance Technologies, Inc.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
19	DSA	Exact match	Trevose, PA, United StatesHQ recorded Oct 11, 2026	201-500	894 contacts →
	Exact match “Data Systems Analysts, Inc.(DSA) has been providing mission essential solutions for Defense, Federal Government, Academia, and Commercial customers since 1963.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
20	Coffman Engineers	Exact match	Seattle, WA, United StatesHQ recorded Oct 11, 2026	501-1,000	889 contacts →
	Exact match “The right team is more than an advantage.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
21	Arcfield	Exact match	Chantilly, VA, United StatesHQ recorded Oct 11, 2026	1,001-5,000	888 contacts →
	Exact match “Arcfield was purpose-built to protect the nation and its allies through innovations in systems engineering and integration, space and mission launch assurance, cybersecurity and…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
22	TSC	Exact match	Arlington, VA, United StatesHQ recorded Oct 11, 2026	501-1,000	835 contacts →
	Exact match “TSC is an employee-owned, high technology company engaged in providing engineering services and specialized products to U.S.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
23	KAY And Associates, INC	Exact match	Buffalo Grove, IL, United StatesHQ recorded Oct 11, 2026	501-1,000	782 contacts →
	Exact match “Kay and Associates, Inc.(KAI) has kept the world's most demanding fleets mission-ready since 1960.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
24	Precise Systems, INC	Exact match	Lexington Park, MD, United StatesHQ recorded Oct 11, 2026	1,001-5,000	767 contacts →
	Exact match “Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation’s most critical defense programs.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase
25	Fairbanks Morse Defense	Exact match	Beloit, WI, United StatesHQ recorded Oct 11, 2026	1,001-5,000	726 contacts →
	Exact match “Fairbanks Morse Defense (FMD) is the leading provider of the highest value equipment for naval defense customers.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “defense contractor engineering consulting companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 2,749 defense contractor engineering consulting companies based in the United States

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Defense contractor engineering consulting companies based in the United States at a glance

As of Oct 11, 2026

10.6%Verified-email coverage

98.7Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Huntsville

Oct 11, 2026Page data refreshed

Companies by employee count

1-10

1,195

11-50

827

51-200

459

201-500

163

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,749 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “defense contractor engineering consulting companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 28,776 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on October 11, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Defense contractor engineering consulting companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “defense contractor engineering consulting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many defense contractor engineering consulting companies are there based in the United States?

RevenueBase identified 2,749 company matches for defense contractor engineering consulting companies associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Northrop Grumman tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most defense contractor engineering consulting companies?

Huntsville leads with 91 company records, followed by Washington (64) and Arlington (61).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 28,776 professional contacts with verified work emails tracked across these 2,749 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 11, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.