Company lists · Data refreshed September 2026

Top 25 Mechanical engineering staffing based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 2,896 companies tracked

RevenueBase identified 2,896 mechanical engineering staffing headquartered in the United States as of September 2026 and tracks 72,343 professional contacts across them, including 12,093 with verified work emails and 21,599 with mobile numbers. Houston is the largest hub.

This list covers mechanical engineering staffing 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

2,896Companies

72,343Contacts tracked

12,093Verified emails

21,599Mobile numbers

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The 25 largest mechanical engineering staffing based in the United States

Ranked by team size

Top 25 of 2,896 mechanical engineering staffing based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names mechanical engineering staffing: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Tradesmen InternationalIndirect evidence	Macedonia, OH, United StatesHQ checked Sep 5, 2026	10001+	4,999
	“Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Source: company website · checked Sep 5, 2026
2	ResourcemfgIndirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	5,001-10,000	1,639
	“ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…” Source: company website · checked Sep 5, 2026
3	Nesco ResourceIndirect evidence	Mayfield Heights, OH, United StatesHQ checked Sep 5, 2026	501-1,000	1,599
	“Companies need talent.” Source: company website · checked Sep 5, 2026
4	BrooksourceIndirect evidence	Indianapolis, IN, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,480
	“At Brooksource, relationships are at the center of everything we do.” Source: company website · checked Sep 5, 2026
5	Construction Labor ContractorsPartial evidence	Round Rock, TX, United StatesHQ checked Sep 5, 2026	501-1,000	1,234
	“Let us make construction staffing work for you.” Source: company website · checked Sep 5, 2026
6	TRS Staffing SolutionsStrong evidence	Greenville, United StatesHQ checked Sep 5, 2026	201-500	1,187
	“TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: company website · checked Sep 5, 2026
7	QPS Employment GroupPartial evidence	Brookfield, WI, United StatesHQ checked Sep 5, 2026	201-500	1,019
	“Founded in 1985, QPS Employment Group has grown from a two-person operation to one of the nation's leading staffing and recruiting firms, with more than 300 internal employees…” Source: company website · checked Sep 5, 2026
8	Staff ZonePartial evidence	Roswell, GA, United StatesHQ checked Sep 5, 2026	10001+	1,011
	“Staff Zone is a Best-in-Class® construction staffing agency specializing in meeting the daily workforce needs of the construction, light industrial, and special events industries.” Source: company website · checked Sep 5, 2026
9	Remx The Workforce ExpertsPartial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	901
	“RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Source: company website · checked Sep 5, 2026
10	Eastridge Workforce SolutionsPartial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	n/a	803
	“Eastridge Workforce Solutions is a trusted staffing partner helping businesses build stronger, more productive teams across industrial and professional sectors.” Source: company website · checked Sep 5, 2026
11	Cynet SystemsIndirect evidence	Sterling, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	732
	“Headquartered in Washington DC Metro Area, Cynet Systems is a top talent supplier for companies across North America.” Source: company website · checked Sep 5, 2026
12	Automation Personnel Services, INCIndirect evidence	Birmingham, AL, United StatesHQ checked Sep 5, 2026	10001+	624
	“Automation Personnel Services was founded in Birmingham, AL almost 30 years ago and has expanded coast to coast with 40 Branch offices in eleven states.” Source: company website · checked Sep 5, 2026
13	Hirequest DirectIndirect evidence	Nashville, TN, United StatesHQ checked Sep 5, 2026	n/a	618
	“HireQuest Direct specializes in day labor, general labor, disaster recovery, skilled labor, janitorial, site clean-up, composite crew, demolition, administrative, hospitality…” Source: company website · checked Sep 5, 2026
14	Volt Technical ResourcesIndirect evidence	Orange, CA, United StatesHQ checked Sep 5, 2026	5,001-10,000	584
	“A Six Sigma Company ~61 years in the industry ~Nationwide 4 million+ candidate database ~Fortune Company ~Extensive E-Recruiting capabilities ~Reference and Employment check…” Source: company website · checked Sep 5, 2026
15	Link StaffingPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	579
	“LINK Staffing has been placing competent, dependable talent with Texas employers since 1980.” Source: company website · checked Sep 5, 2026
16	Confident Staffing INCPartial evidence	Medford, OR, United StatesHQ checked Sep 5, 2026	201-500	555
	“We provide staffing services in Oregon and Washington and Direct Hire services nationwide.” Source: company website · checked Sep 5, 2026
17	STS Technical ServicesPartial evidence	Brookfield, WI, United StatesHQ checked Sep 5, 2026	51-200	543
	“STS Technical Services is a Top 100 Staffing Firm that’s partnered with some of the largest names in the aerospace, manufacturing, defense and industrial industries.” Source: company website · checked Sep 5, 2026
18	EASIIndirect evidence	Hanover, MD, United StatesHQ checked Sep 5, 2026	1,001-5,000	526
	“EASi is now Actalent.” Source: company website · checked Sep 5, 2026
19	Chartwell Staffing SolutionsPartial evidence	Lancaster, United StatesHQ checked Sep 5, 2026	201-500	522
	“Chartwell Staffing Solutions is one of the nation's top woman-owned staffing agencies as well as the largest staffing agency in Pennsylvania.” Source: company website · checked Sep 5, 2026
20	Cornerstone StaffingPartial evidence	Southlake, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	502
	“CornerStone Staffing has been servicing the Dallas-Fort Worth metroplex since 1991 and the Phoenix-Tempe area since 2019.” Source: company website · checked Sep 5, 2026
21	Trillium Construction ServicesIndirect evidence	Kalamazoo, MI, United StatesHQ checked Sep 5, 2026	201-500	494
	“Trillium Construction Services has over a quarter of a century of experience in the construction recruiting industry.” Source: company website · checked Sep 5, 2026
22	Launch Technical Workforce SolutionsIndirect evidence	Oak Brook, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	488
	“LAUNCH Technical Workforce Solutions partners with aviation, transportation, and industrial organizations to solve complex workforce challenges.” Source: company website · checked Sep 5, 2026
23	Black Diamond NetworksStrong evidence	Andover, MA, United StatesHQ checked Sep 5, 2026	51-200	481
	“Delivering Contingent Staffing, Specialized Consulting, and Managed Project Services (MSP, FSP, FSO) for Engineering, IT, and Lifescience enterprises.” Source: company website · checked Sep 5, 2026
24	NSCPartial evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	1,001-5,000	473
	“Welcome to NSC, the Skilled Staffing Experts!” Source: company website · checked Sep 5, 2026
25	EntegeePartial evidence	Burlington, MA, United StatesHQ checked Sep 5, 2026	201-500	468
	“For the last sixty years Entegee has provided Fortune 500 and other companies with highly qualified engineering and technical personnel.” Source: company website · checked Sep 5, 2026

Showing 25 of 2,896 mechanical engineering staffing based in the United States

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Mechanical engineering staffing based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

HoustonLargest hub · 102 HQs

21,599Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

1,452

11-50

765

51-200

404

201-500

151

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

11,206

31–60

775

61–90

90–180

180+

100

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 mechanical engineering staffing, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “mechanical engineering staffing”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among mechanical engineering staffing, 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 an evidence 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, 12,093 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 5, 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.

Mechanical engineering staffing by metro

Frequently asked

How many mechanical engineering staffing are there based in the United States?

RevenueBase identified 2,896 mechanical engineering staffing 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?

Tradesmen International, headquartered in Macedonia, tops this list with the largest team on record.

Which city has the most mechanical engineering staffing?

Houston leads with 102 headquartered companies, followed by Atlanta (46) and Denver (40).

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 12,093 verified decision-maker contacts tracked across these 2,896 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 5, 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.