Company lists · Data refreshed September 2026

Top 25 Engineering outsourcing companies based in the United States

Name: Engineering outsourcing companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 7,835 companies tracked

RevenueBase identified 7,835 engineering outsourcing companies headquartered in the United States as of September 2026 and tracks 273,019 professional contacts across them, including 75,781 with verified work emails and 41,991 with mobile numbers. Houston is the largest hub.

This list covers engineering outsourcing companies 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 24, 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 24, 2026 86% judged on-target in blind review

7,835Companies

273,019Contacts tracked

75,781Verified emails

41,991Mobile numbers

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The 25 largest engineering outsourcing companies based in the United States

Ranked by team size

Top 25 of 7,835 engineering outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering outsourcing companies: 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	Plexus Corp	Indirect evidence	Neenah, NC, United StatesHQ checked Sep 24, 2026	10001+	8,149 contacts →
	Indirect evidence “Since 1979, Plexus has been partnering with companies to create the products that build a better world.” Source: RevenueBase Database · checked Sep 24, 2026
2	Benchmark	Partial evidence	Tempe, AZ, United StatesHQ checked Sep 24, 2026	10001+	5,362 contacts →
	Partial evidence “Benchmark is a worldwide provider of innovative product design, engineering services, technology solutions and advanced manufacturing services.” Source: RevenueBase Database · checked Sep 24, 2026
3	Einfochips An Arrow Company	Partial evidence	San Jose, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,965 contacts →
	Partial evidence “eInfochips, an Arrow company, is a leading global product engineering and semiconductor design services provider.” Source: RevenueBase Database · checked Sep 24, 2026
4	VEE Technologies	Indirect evidence	Decatur, GA, United StatesHQ checked Sep 24, 2026	5,001-10,000	2,933 contacts →
	Indirect evidence “Vee Technologies is a global consulting and professional services organization delivering specialized, technology-enabled solutions.” Source: RevenueBase Database · checked Sep 24, 2026
5	Caresoft Global	Partial evidence	Livonia, MI, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,860 contacts →
	Partial evidence “We are a global engineering solutions company working closely with major Automotive, On-Highway, Agriculture & Construction Equipment Manufacturers and Tier-I Suppliers to solve…” Source: RevenueBase Database · checked Sep 24, 2026
6	Moldtek Technologies Limited	Indirect evidence	Cumming, GA, United StatesHQ checked Sep 24, 2026	501-1,000	1,107 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
7	DGS Technical Services INC	Indirect evidence	Elgin, IL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,050 contacts →
	Indirect evidence “DGSTS, Inc.” Source: RevenueBase Database · checked Sep 24, 2026
8	dev.pro	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 24, 2026	501-1,000	997 contacts →
	Partial evidence “Dev.Pro helps innovative technology companies scale their business by leveraging our software engineering expertise to support them every step of the way.” Source: RevenueBase Database · checked Sep 24, 2026
9	ARI	Partial evidence	East Peoria, IL, United StatesHQ checked Sep 24, 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 24, 2026
10	Technosoft Engineering	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 24, 2026	501-1,000	833 contacts →
	Partial evidence “Technosoft Engineering is a global provider of Digital Engineering & Consulting, Product Engineering, Manufacturing Engineering with substantial operations in North America and…” Source: RevenueBase Database · checked Sep 24, 2026
11	BJIT	Partial evidence	Dhaka, CA, United StatesHQ checked Sep 24, 2026	501-1,000	711 contacts →
	Partial evidence “BJIT is a global leader in offshore software development and IT outsourcing services.” Source: RevenueBase Database · checked Sep 24, 2026
12	Indovance INC	Partial evidence	Apex, NC, United StatesHQ checked Sep 24, 2026	501-1,000	573 contacts →
	Partial evidence “Indovance is a global, multidisciplinary Engineering Services firm, backed by more than two decades of industry expertise in delivering high-quality CAD Drafting and Design…” Source: RevenueBase Database · checked Sep 24, 2026
13	Enventure Engineering	Partial evidence	Chicago, IL, United StatesHQ checked Sep 24, 2026	501-1,000	569 contacts →
	Partial evidence “Enventure is a trusted provider of Building Engineering, Plant Design, and Compliance solutions with offices in the Chicago and delivery centres in Bangalore, Shivamogga, Hubli…” Source: RevenueBase Database · checked Sep 24, 2026
14	RFA Engineering	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 24, 2026	201-500	468 contacts →
	Indirect evidence “RFA serves 100's of clients ranging in size from Fortune 500 to entrepreneurial start-ups.” Source: RevenueBase Database · checked Sep 24, 2026
15	RCO Engineering	Indirect evidence	Roseville, MI, United StatesHQ checked Sep 24, 2026	501-1,000	438 contacts →
	Indirect evidence “Specializing in low-volume manufacturing that Tier 1 suppliers avoid, we offer complete program management under one roof, including emergency tooling and parts, large program…” Source: RevenueBase Database · checked Sep 24, 2026
16	Recon Management Services, INC	Partial evidence	Sulphur, LA, United StatesHQ checked Sep 24, 2026	501-1,000	420 contacts →
	Partial evidence “ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…” Source: RevenueBase Database · checked Sep 24, 2026
17	The PAC Group	Partial evidence	Troy, MI, United StatesHQ checked Sep 24, 2026	201-500	413 contacts →
	Partial evidence “The PAC Group is a global engineering and management services firm supporting diversified industries on a global basis.” Source: RevenueBase Database · checked Sep 24, 2026
18	Sterling Engineering	Partial evidence	Westchester, IL, United StatesHQ checked Sep 24, 2026	501-1,000	402 contacts →
	Partial evidence “Sterling is an award-winning professional engineering consulting and technical staffing company.” Source: RevenueBase Database · checked Sep 24, 2026
19	Symetri USA	Indirect evidence	Nashua, NH, United StatesHQ checked Sep 24, 2026	501-1,000	387 contacts →
	Indirect evidence “What do some of the world’s largest projects have in common?” Source: RevenueBase Database · checked Sep 24, 2026
20	Trimech	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 24, 2026	201-500	359 contacts →
	Partial evidence “The TriMech Group is a leading provider of engineering solutions, specializing in advanced design, manufacturing, and automation technologies.” Source: RevenueBase Database · checked Sep 24, 2026
21	Artiflex Manufacturing, INC	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 24, 2026	501-1,000	324 contacts →
	Indirect evidence “ArtiFlex Manufacturing is a global leader in design, tooling, automation, past model service, factory assist, and low-volume tooling and production solutions.” Source: RevenueBase Database · checked Sep 24, 2026
22	Triple Crown	Partial evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	51-200	322 contacts →
	Partial evidence “Triple Crown delivers engineering, verification and design services that move the world forward, one precisely managed and expertly executed project at a time.” Source: RevenueBase Database · checked Sep 24, 2026
23	Zealogics INC	Strong evidence	Branchburg, NJ, United StatesHQ checked Sep 24, 2026	501-1,000	321 contacts →
	Strong evidence “Zealogics Inc provides a broad range of IT and Engineering Services, Systems Implementation and Application Outsourcing Services through an optimized global delivery model.” Source: RevenueBase Database · checked Sep 24, 2026
24	C&i Engineering	Partial evidence	Louisville, KY, United StatesHQ checked Sep 24, 2026	201-500	313 contacts →
	Partial evidence “Chemical & Industrial Engineering, Inc.(C&I) is a full-service Engineering, Design & Procurement firm, providing hands-on design expertise for increasing capacity, improving…” Source: RevenueBase Database · checked Sep 24, 2026
25	Bepc Inc.	Partial evidence	San Angelo, TX, United StatesHQ checked Sep 24, 2026	201-500	296 contacts →
	Partial evidence “BEPC Incorporated provides Technical Engineering and Information Technology Project Management services to Fortune 500 companies in the industries: Life Science, Engineering…” Source: RevenueBase Database · checked Sep 24, 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: engineering outsourcing companies. 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 engineering outsourcing companies.
Partial evidence: Its own public description names part of engineering outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering outsourcing companies. 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 7,835 engineering outsourcing companies based in the United States

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Engineering outsourcing companies based in the United States at a glance

As of Sep 24, 2026

27.8%Verified-email coverage

15.4%Mobile-number coverage

34.8Average contacts per company

1-10Median size (employees)

0.8%Largest-city concentration · Houston

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

1,809

11-50

782

51-200

310

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

56,4650–30

17,13031–60

1,14861–90

4290–180

996180+

Company record updated

Median 87.0d

00–30

41,76931–60

121,30761–90

95,57990–180

14,364180+

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 engineering outsourcing companies, 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 “engineering outsourcing companies”. 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 engineering outsourcing companies), 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 engineering outsourcing companies, 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, 75,781 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 24, 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.

Engineering outsourcing companies 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 engineering outsourcing companies, 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 engineering outsourcing companies are there based in the United States?

RevenueBase identified 7,835 engineering outsourcing companies 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?

Plexus Corp, headquartered in Raleigh, tops this list with the largest team on record.

Which city has the most engineering outsourcing companies?

Houston leads with 64 headquartered companies, followed by Austin (45) and San Diego (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 75,781 verified decision-maker contacts tracked across these 7,835 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 24, 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.