Company lists · Data refreshed September 2026

Top 25 Engineering staffing services based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 4,621 companies tracked

RevenueBase identified 4,621 company matches for engineering staffing services associated with the United States as of September 2026 and tracks 154,127 professional contacts across them, including 29,502 with verified work emails. Houston is the largest hub.

This list covers company matches for engineering staffing services 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 September 21, 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 Sep 21, 2026 How this list was built

4,621Companies

154,127Contacts tracked

29,502Verified emails

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The 25 largest engineering staffing services based in the United States

Ranked by team size

Top 25 of 4,621 company matches for engineering staffing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 21, 2026	10001+	25,574 contacts →
	Exact match “At Robert Half, we prioritize your security-if you believe you've encountered a scam or fraudulent recruiter, please report it immediately to All Robert Half recruiters…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Sep 21, 2026	10001+	4,999 contacts →
	Exact match “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	10001+	4,263 contacts →
	Exact match “We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Airswift	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	2,128 contacts →
	Exact match “We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Addison Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,840 contacts →
	Exact match “Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	MEDIX	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	1,753 contacts →
	Exact match “Medix provides workforce solutions to clients and creates opportunity for talent in the Healthcare, Life Sciences, Engineering and Technology fields.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Resourcemfg	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	1,639 contacts →
	Exact match “ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Sep 21, 2026	501-1,000	1,599 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Brooksource	Exact match	Indianapolis, IN, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,480 contacts →
	Exact match “At Brooksource, relationships are at the center of everything we do.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	BHI Energy	Exact match	Weymouth, MA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	1,427 contacts →
	Exact match “BHI Energy is an industry-leading provider of specialty services and staffing solutions in support of the daily operations, routine maintenance and capital investment requirements…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Construction Labor Contractors	Exact match	Round Rock, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	1,234 contacts →
	Exact match “Let us make construction staffing work for you.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Outsource	Exact match	El Segundo, CA, United StatesHQ recorded Sep 21, 2026	n/a	1,230 contacts →
	Exact match “Outsource is the largest staffing firm in the nation specializing in the placement of low voltage and electrical talent.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Sep 21, 2026	201-500	1,187 contacts →
	Exact match “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	QPS Employment Group	Exact match	Brookfield, WI, United StatesHQ recorded Sep 21, 2026	201-500	1,019 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Staff Zone	Exact match	Roswell, GA, United StatesHQ recorded Sep 21, 2026	10001+	1,011 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	ARI	Exact match	East Peoria, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	979 contacts →
	Exact match “ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Remx The Workforce Experts	Exact match	Atlanta, GA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	901 contacts →
	Exact match “RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	The Reserves Network	Exact match	Fairview Park, OH, United StatesHQ recorded Sep 21, 2026	n/a	812 contacts →
	Exact match “The Reserves Network is a leading provider of staffing services for the Office, Industrial, Professional and Technical markets.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Eastridge Workforce Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 21, 2026	n/a	803 contacts →
	Exact match “Eastridge Workforce Solutions is a trusted staffing partner helping businesses build stronger, more productive teams across industrial and professional sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Crown Staffing	Exact match	Westerville, OH, United StatesHQ recorded Sep 21, 2026	201-500	749 contacts →
	Exact match “Crown Staffing is a leading staffing agency in 14 states, providing direct hire, temporary, and temp-to-hire staffing solutions to businesses of all sizes.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Cynet Systems	Exact match	Sterling, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	732 contacts →
	Exact match “Headquartered in Washington DC Metro Area, Cynet Systems is a top talent supplier for companies across North America.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Varite INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	711 contacts →
	Exact match “VARITE has a definite spirit.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	PTS Advance	Exact match	Tustin, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	706 contacts →
	Exact match “PTS Advance teams up with thousands of candidates, clients, and partners to advance workforce utilization in the Oil, Gas & Chemicals, Power & Renewables, Advanced Manufacturing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Acro Service Corp	Exact match	Livonia, MI, United StatesHQ recorded Sep 21, 2026	1,001-5,000	636 contacts →
	Exact match “With singular global reach and agility, Acro Service Corporation offers you a unique integrated approach to staffing and consulting solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Automation Personnel Services, INC	Exact match	Birmingham, AL, United StatesHQ recorded Sep 21, 2026	10001+	624 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 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 “engineering staffing services”. 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 4,621 engineering staffing services based in the United States

See the full list, filter by size, metro and specialty, and access 29,502 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering staffing services based in the United States at a glance

As of Sep 21, 2026

19.1%Verified-email coverage

33.4Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,021

11-50

1,381

51-200

769

201-500

264

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 4,621 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 “engineering staffing services” 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 29,502 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 September 21, 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.

Engineering staffing services 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 “engineering staffing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 4,621 company matches for engineering staffing services associated with the United States as of September 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?

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

Which city has the most engineering staffing services?

Houston leads with 174 company records, followed by New York (123) and Dallas (80).

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 29,502 professional contacts with verified work emails tracked across these 4,621 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 September 21, 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.