Company lists · Data refreshed September 2026

Top 25 Systems integration contractors based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,882 companies tracked

RevenueBase identified 4,882 systems integration contractors headquartered in the United States as of September 2026 and tracks 137,148 professional contacts across them, including 53,862 with verified work emails. Houston is the largest hub.

This list covers systems integration contractors 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 29, 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 29, 2026 86% judged on-target in blind review

4,882Companies

137,148Contacts tracked

53,862Verified emails

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The 25 largest systems integration contractors based in the United States

Ranked by team size

Top 25 of 4,882 systems integration contractors based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to systems integration contractors: 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	SHI International Corp	Indirect evidence	Somerset, NJ, United StatesHQ checked Sep 29, 2026	5,001-10,000	6,734 contacts →
	Indirect evidence “Think of SHI as your personal technology concierge.” Source: RevenueBase Database · checked Sep 29, 2026
2	Convergint	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 29, 2026	10001+	5,707 contacts →
	Partial evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 29, 2026
3	Black BOX	Strong evidence	Plano, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,667 contacts →
	Strong evidence “Black Box is a global leader in digital infrastructure solutions, delivering network and system integration, managed services, and technology products to Fortune 100 and top…” Source: RevenueBase Database · checked Sep 29, 2026
4	M.C. Dean, INC	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 29, 2026	5,001-10,000	2,761 contacts →
	Indirect evidence “M.C.” Source: RevenueBase Database · checked Sep 29, 2026
5	Automated Systems Design, INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	n/a	2,678 contacts →
	Partial evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 29, 2026
6	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,800 contacts →
	Indirect evidence “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Source: RevenueBase Database · checked Sep 29, 2026
7	ISC Constructors, L.L.C	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,384 contacts →
	Indirect evidence “ISC is an industrial engineering and construction company specializing in comprehensive electrical, instrumentation, and controls solutions.” Source: RevenueBase Database · checked Sep 29, 2026
8	Engility Corporation	Indirect evidence	Reston, VA, United StatesHQ checked Sep 29, 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 29, 2026
9	Bergelectric	Indirect evidence	Carlsbad, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,182 contacts →
	Indirect evidence “Since their inception in 1946, Bergelectric has made its mark on the construction industry by providing the highest quality electrical and technology contracting.” Source: RevenueBase Database · checked Sep 29, 2026
10	Rovisys	Partial evidence	Aurora, OH, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,159 contacts →
	Partial evidence “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Source: RevenueBase Database · checked Sep 29, 2026
11	Mckenney's, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,077 contacts →
	Indirect evidence “McKenney’s is the Southeast’s most trusted name in facility construction, operation and maintenance.” Source: RevenueBase Database · checked Sep 29, 2026
12	E2 Optics	Indirect evidence	Englewood, CO, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,001 contacts →
	Indirect evidence “E2 Optics is an award-winning, woman-owned, low voltage IT solutions integrator.” Source: RevenueBase Database · checked Sep 29, 2026
13	Prime Controls	Partial evidence	Lewisville, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	857 contacts →
	Partial evidence “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Source: RevenueBase Database · checked Sep 29, 2026
14	Elec-Tech Electrical Contractors	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 29, 2026	n/a	782 contacts →
	Indirect evidence “WELCOME TO OUR WEBSITE!” Source: RevenueBase Database · checked Sep 29, 2026
15	SASCO	Partial evidence	Fullerton, CA, United StatesHQ checked Sep 29, 2026	501-1,000	734 contacts →
	Partial evidence “SASCO has been a leader in electrical construction and low-voltage systems technologies for 50 years.” Source: RevenueBase Database · checked Sep 29, 2026
16	Kinetics	Strong evidence	Livermore, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	734 contacts →
	Strong evidence “Founded in 1973, Kinetics is a full-service process and mechanical contractor specializing in the design and installation of process, mechanical, plumbing and HVAC systems.” Source: RevenueBase Database · checked Sep 29, 2026
17	Baker Group	Partial evidence	Ankeny, IA, United StatesHQ checked Sep 29, 2026	1,001-5,000	655 contacts →
	Partial evidence “Established in 1963, Baker Group is Iowa’s premier full-service specialty contractor-serving commercial, industrial, institutional, and mission-critical markets across the country.” Source: RevenueBase Database · checked Sep 29, 2026
18	Cache Valley Electric	Partial evidence	Logan, UT, United StatesHQ checked Sep 29, 2026	1,001-5,000	627 contacts →
	Partial evidence “As one of the nation’s premier electrical contractors, we don’t just provide high-quality services.” Source: RevenueBase Database · checked Sep 29, 2026
19	Cummings Electrical	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	626 contacts →
	Indirect evidence “Cummings Electrical,(Cummings) is one of the largest providers of electrical contracting services in DFW market.” Source: RevenueBase Database · checked Sep 29, 2026
20	E Tech Group	Strong evidence	West Chester, OH, United StatesHQ checked Sep 29, 2026	501-1,000	610 contacts →
	Strong evidence “E Tech Group is one of the largest engineering and system integration firms in the United States.” Source: RevenueBase Database · checked Sep 29, 2026
21	Alterman, INC	Indirect evidence	Live Oak, TX, United StatesHQ checked Sep 29, 2026	501-1,000	597 contacts →
	Indirect evidence “Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures.” Source: RevenueBase Database · checked Sep 29, 2026
22	Environmental AIR Systems	Indirect evidence	High Point, NC, United StatesHQ checked Sep 29, 2026	1,001-5,000	545 contacts →
	Indirect evidence “For generations, EAS Companies has been an innovative provider delivering complete solutions in mechanical, electrical, plumbing, building services, controls, and engineered…” Source: RevenueBase Database · checked Sep 29, 2026
23	Enterprise Solutions INC	Indirect evidence	Warrenville, IL, United StatesHQ checked Sep 29, 2026	501-1,000	540 contacts →
	Indirect evidence “Enterprise Solutions, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
24	P1 Construction, LLC	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 29, 2026	1,001-5,000	497 contacts →
	Indirect evidence “P1 is built to bring trusted partnerships, facilities, and the communities we serve to life.” Source: RevenueBase Database · checked Sep 29, 2026
25	Amteck, LLC	Indirect evidence	Lexington, KY, United StatesHQ checked Sep 29, 2026	501-1,000	474 contacts →
	Indirect evidence “Amteck is one of Kentucky’s largest privately held electrical construction firms, providing design-build electrical construction services for a wide variety of facilities…” Source: RevenueBase Database · checked Sep 29, 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 integration contractors. 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 integration contractors.
Partial evidence: Its own public description names part of systems integration contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name systems integration contractors. 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 4,882 systems integration contractors based in the United States

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Systems integration contractors based in the United States at a glance

As of Sep 29, 2026

39.3%Verified-email coverage

28.1Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Houston

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,801

11-50

1,955

51-200

792

201-500

195

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 4,882 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 integration contractors, 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 integration contractors”. 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 integration contractors), 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 integration contractors, 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, 53,862 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 29, 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 integration contractors 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 integration contractors, 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 integration contractors are there based in the United States?

RevenueBase identified 4,882 systems integration contractors 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?

SHI International Corp, headquartered in Somerset, tops this list with the largest team on record.

Which city has the most systems integration contractors?

Houston leads with 100 headquartered companies, followed by New York (96) and Dallas (45).

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 53,862 verified decision-maker contacts tracked across these 4,882 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 29, 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.