Company lists · Data refreshed September 2026

Top 25 Systems engineering consultants based in the United States

Name: Systems engineering consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 4,949 companies tracked

RevenueBase identified 4,949 systems engineering consultants headquartered in the United States as of September 2026 and tracks 156,286 professional contacts across them, including 55,009 with verified work emails. Houston is the largest hub.

This list covers systems engineering consultants headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

4,949Companies

156,286Contacts tracked

55,009Verified emails

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The 25 largest systems engineering consultants based in the United States

Ranked by team size

Top 25 of 4,949 systems engineering consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to systems engineering consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Belcan	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 18, 2026	5,001-10,000	5,031 contacts →
	Partial evidence “Belcan, a Cognizant company is a global supplier of engineering, manufacturing & supply chain, workforce and government IT solutions to customers in the aerospace, defense…” Source: RevenueBase Database · checked Sep 18, 2026
2	Power Engineers	Indirect evidence	Hailey, ID, United StatesHQ checked Sep 18, 2026	1,001-5,000	4,013 contacts →
	Indirect evidence “POWER Engineers is now part of WSP.” Source: RevenueBase Database · checked Sep 18, 2026
3	AEGIS	Partial evidence	Seattle, WA, United StatesHQ checked Sep 18, 2026	n/a	2,352 contacts →
	Partial evidence “Aegis provides custom engineering and technology development services to a broad array of clients, including Fortune 100 companies, the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
4	ECS Group Of Companies	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,210 contacts →
	Partial evidence “ECS Group of Companies is a Chantilly, VA-based consulting engineering firm.” Source: RevenueBase Database · checked Sep 18, 2026
5	Modern Technology Solutions, Inc. Mtsi	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,920 contacts →
	Partial evidence “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Source: RevenueBase Database · checked Sep 18, 2026
6	Scientific Research Corporation	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,917 contacts →
	Partial evidence “Scientific Research Corporation is an advanced engineering company that was founded in 1988 to provide innovative solutions to the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
7	RCM Technologies, INC	Indirect evidence	Pennsauken, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,838 contacts →
	Indirect evidence “RCM Technologies, Inc.(Nasdaq: RCMT) is a business and technology solutions provider with world-class talent in key market segments.” Source: RevenueBase Database · checked Sep 18, 2026
8	Bowman Consulting	Partial evidence	Reston, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,666 contacts →
	Partial evidence “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Source: RevenueBase Database · checked Sep 18, 2026
9	GEI Consultants, INC	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,604 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
10	Dynetics, INC	Partial evidence	Huntsville, AL, United StatesHQ checked Sep 18, 2026	10001+	1,532 contacts →
	Partial evidence “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Source: RevenueBase Database · checked Sep 18, 2026
11	Engility Corporation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 18, 2026	5,001-10,000	1,245 contacts →
	Indirect evidence “Engility Corporation is now part of SAIC, a premier technology integrator based in Reston, Virginia.” Source: RevenueBase Database · checked Sep 18, 2026
12	VT Group VTG	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,168 contacts →
	Indirect evidence “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Source: RevenueBase Database · checked Sep 18, 2026
13	Radiance Technologies	Indirect evidence	Huntsville, AL, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,049 contacts →
	Indirect evidence “Radiance Technologies, Inc.” Source: RevenueBase Database · checked Sep 18, 2026
14	ARI	Partial evidence	East Peoria, IL, United StatesHQ checked Sep 18, 2026	1,001-5,000	979 contacts →
	Partial evidence “ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…” Source: RevenueBase Database · checked Sep 18, 2026
15	Mesa Associates, INC	Partial evidence	Madison, AL, United StatesHQ checked Sep 18, 2026	1,001-5,000	897 contacts →
	Partial evidence “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Source: RevenueBase Database · checked Sep 18, 2026
16	Coffman Engineers	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 18, 2026	501-1,000	859 contacts →
	Indirect evidence “The right team is more than an advantage.” Source: RevenueBase Database · checked Sep 18, 2026
17	DSA	Partial evidence	Trevose, PA, United StatesHQ checked Sep 18, 2026	201-500	842 contacts →
	Partial evidence “Data Systems Analysts, Inc.(DSA) has been providing mission essential solutions for Defense, Federal Government, Academia, and Commercial customers since 1963.” Source: RevenueBase Database · checked Sep 18, 2026
18	Teledyne Brown Engineering	Strong evidence	Huntsville, United StatesHQ checked Sep 18, 2026	1,001-5,000	822 contacts →
	Strong evidence “Teledyne Brown Engineering is a leader in providing innovative systems engineering, integration, operations and advanced manufacturing solutions for defense, space, marine and…” Source: RevenueBase Database · checked Sep 18, 2026
19	TSC	Partial evidence	Arlington, VA, United StatesHQ checked Sep 18, 2026	501-1,000	808 contacts →
	Partial evidence “TSC is an employee-owned, high technology company engaged in providing engineering services and specialized products to U.S.” Source: RevenueBase Database · checked Sep 18, 2026
20	Syska Hennessy Group	Indirect evidence	New York, United StatesHQ checked Sep 18, 2026	501-1,000	803 contacts →
	Indirect evidence “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Source: RevenueBase Database · checked Sep 18, 2026
21	Arcfield	Strong evidence	Chantilly, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	798 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
22	KAY And Associates, INC	Partial evidence	Buffalo Grove, IL, United StatesHQ checked Sep 18, 2026	501-1,000	754 contacts →
	Partial evidence “Kay and Associates, Inc.(KAI) was established in 1960 by our founder Donald Kay to provide high quality, cost effective solutions in response to the need for engineering and…” Source: RevenueBase Database · checked Sep 18, 2026
23	Sev1tech LLC	Partial evidence	Woodbridge, VA, United StatesHQ checked Sep 18, 2026	501-1,000	688 contacts →
	Partial evidence “Sev1Tech is a leader in providing innovative technology, high-end engineering and mission solutions and services.” Source: RevenueBase Database · checked Sep 18, 2026
24	Ghafari Associates	Partial evidence	Dearborn, MI, United StatesHQ checked Sep 18, 2026	501-1,000	670 contacts →
	Partial evidence “An innovator since 1982, Ghafari embraces an integrated design approach to deliver solutions that synergize building operations, systems, and people.” Source: RevenueBase Database · checked Sep 18, 2026
25	Linquest	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	642 contacts →
	Indirect evidence “LinQuest delivers performance excellence across the Air, Land, Sea, Space, and Cyberspace domains.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: systems engineering consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names systems engineering consultants.
Partial evidence: Its own public description names part of systems engineering consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name systems engineering consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,949 systems engineering consultants based in the United States

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Systems engineering consultants based in the United States at a glance

As of Sep 18, 2026

35.2%Verified-email coverage

31.6Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

2,419

11-50

1,590

51-200

660

201-500

184

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 4,949 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among systems engineering consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “systems engineering consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names systems engineering consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among systems engineering consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 55,009 across the full list. 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 September 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Systems engineering consultants by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names systems engineering consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many systems engineering consultants are there based in the United States?

RevenueBase identified 4,949 systems engineering consultants headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Belcan, headquartered in Cincinnati, tops this list with the largest team on record.

Which city has the most systems engineering consultants?

Houston leads with 116 headquartered companies, followed by New York (86) and Huntsville (78).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 55,009 verified decision-maker contacts tracked across these 4,949 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 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 Smart Search, 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.