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Company lists · Data refreshed September 2026

Top 25 Engineered staffing agencies based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 9,169 companies tracked

RevenueBase identified 9,169 engineered staffing agencies headquartered in the United States as of September 2026 and tracks 314,000 professional contacts across them, including 48,401 with verified work emails. Houston is the largest hub.

This list covers engineered staffing agencies 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 21, 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 21, 2026 86% judged on-target in blind review
9,169Companies
314,000Contacts tracked
48,401Verified emails
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The 25 largest engineered staffing agencies based in the United States

Ranked by team size
Top 25 of 9,169 engineered staffing agencies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to engineered staffing agencies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1
Robert Half
Indirect evidenceMenlo Park, CA, United StatesHQ checked Sep 21, 202610001+25,574 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
2
Tradesmen International
Indirect evidenceMacedonia, OH, United StatesHQ checked Sep 21, 202610001+4,999 contacts →

Indirect evidence

“Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.”

Source: RevenueBase Database · checked Sep 21, 2026
3
Appleone Employment Services
Indirect evidenceGlendale, CA, United StatesHQ checked Sep 21, 20261,001-5,0004,627 contacts →

Indirect evidence

“AppleOne Employment Services is a full-service employment company.”

Source: RevenueBase Database · checked Sep 21, 2026
4
Spherion
Partial evidenceAtlanta, GA, United StatesHQ checked Sep 21, 202610001+4,263 contacts →

Partial evidence

“We’re Spherion-a staffing and recruiting pioneer that’s been driving careers and helping businesses grow for over 75 years.”

Source: RevenueBase Database · checked Sep 21, 2026
5
Select Staffing
Partial evidenceAtlanta, GA, United StatesHQ checked Sep 21, 202610001+3,934 contacts →

Partial evidence

“Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.”

Source: RevenueBase Database · checked Sep 21, 2026
6
Elwood Staffing Services, INC
Indirect evidenceColumbus, IN, United StatesHQ checked Sep 21, 2026n/a3,481 contacts →

Indirect evidence

“Whether you're looking to find your next great employee, make your next career move, or help a friend find a new job, you can trust that Elwood puts its passion and expertise into…”

Source: RevenueBase Database · checked Sep 21, 2026
7
Beacon Hill
Partial evidenceBoston, MA, United StatesHQ checked Sep 21, 20261,001-5,0003,238 contacts →

Partial evidence

“Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.”

Source: RevenueBase Database · checked Sep 21, 2026
8
24 Seven Talent
Indirect evidenceNY, United StatesHQ checked Sep 21, 2026n/a2,554 contacts →

Indirect evidence

“24 Seven partners with companies to get marketing, creative, and digital work done by providing the right talent, innovation, and insights.”

Source: RevenueBase Database · checked Sep 21, 2026
9
Airswift
Partial evidenceHouston, TX, United StatesHQ checked Sep 21, 2026501-1,0002,128 contacts →

Partial evidence

“We support STEM professionals looking for jobs with exceptional firms in the technology and engineering sectors.”

Source: RevenueBase Database · checked Sep 21, 2026
10
Rose International
Partial evidenceChesterfield, MO, United StatesHQ checked Sep 21, 20265,001-10,0002,061 contacts →

Partial evidence

“Rose International is a leading provider of Staffing and Total Talent Solutions to corporations and government agencies, employing thousands of people across the U.S, Canada and…”

Source: RevenueBase Database · checked Sep 21, 2026
11
Remedy Intelligent Staffing
Partial evidenceAtlanta, GA, United StatesHQ checked Sep 21, 202610001+1,948 contacts →

Partial evidence

“Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…”

Source: RevenueBase Database · checked Sep 21, 2026
12
Spectraforce
Partial evidenceRaleigh, NC, United StatesHQ checked Sep 21, 20261,001-5,0001,845 contacts →

Partial evidence

“Founded in 2004, SPECTRAFORCE® is a global staffing and workforce solutions company that helps organizations build high-performing teams across healthcare, technology, financial…”

Source: RevenueBase Database · checked Sep 21, 2026
13
Addison Group
Indirect evidenceChicago, IL, United StatesHQ checked Sep 21, 20261,001-5,0001,840 contacts →

Indirect evidence

“Addison Group provides comprehensive talent solutions and consulting services across diverse practice areas, including Non-Clinical Healthcare, Information Technology (IT), Human…”

Source: RevenueBase Database · checked Sep 21, 2026
14
Labormax Staffing
Partial evidenceKearney, MO, United StatesHQ checked Sep 21, 2026n/a1,755 contacts →

Partial evidence

“LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.”

Source: RevenueBase Database · checked Sep 21, 2026
15
MEDIX
Partial evidenceChicago, IL, United StatesHQ checked Sep 21, 2026501-1,0001,753 contacts →

Partial evidence

“Medix provides workforce solutions to clients and creates opportunity for talent in the Healthcare, Life Sciences, Engineering and Technology fields.”

Source: RevenueBase Database · checked Sep 21, 2026
16
Elite Staffing INC
Indirect evidenceChicago, IL, United StatesHQ checked Sep 21, 202610001+1,661 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
17
Resourcemfg
Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 21, 20265,001-10,0001,639 contacts →

Indirect evidence

“ResourceMFG places temporary and direct hire employees within the total spectrum of manufacturing jobs including production, quality, maintenance, supervision, and all levels of…”

Source: RevenueBase Database · checked Sep 21, 2026
18
Surge Staffing
Partial evidenceColumbus, OH, United StatesHQ checked Sep 21, 20261,001-5,0001,622 contacts →

Partial evidence

“For over 57 years, Surge has been a national leader in staffing solutions, workforce management and workforce program solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
19
Onin Staffing
Partial evidenceBirmingham, AL, United StatesHQ checked Sep 21, 202610001+1,614 contacts →

Partial evidence

“Ōnin Staffing, a company of The Ōnin Group, is a national light industrial and clerical staffing agency.”

Source: RevenueBase Database · checked Sep 21, 2026
20
Nesco Resource
Indirect evidenceMayfield Heights, OH, United StatesHQ checked Sep 21, 2026501-1,0001,599 contacts →

Indirect evidence

“Companies need talent.”

Source: RevenueBase Database · checked Sep 21, 2026
21
Infotree Global Solutions
Indirect evidencePlymouth, MI, United StatesHQ checked Sep 21, 20261,001-5,0001,545 contacts →

Indirect evidence

“Infotree Global was founded in 2002 in a small office in Canton, MI, Infotree Global had a clear mission; To bring the world’s best talent together with the greatest companies…”

Source: RevenueBase Database · checked Sep 21, 2026
22
Brooksource
Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 21, 20261,001-5,0001,480 contacts →

Indirect evidence

“At Brooksource, relationships are at the center of everything we do.”

Source: RevenueBase Database · checked Sep 21, 2026
23
SELF
Indirect evidenceHouston, TX, United StatesHQ checked Sep 21, 2026n/a1,431 contacts →

Indirect evidence

“We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…”

Source: RevenueBase Database · checked Sep 21, 2026
24
System ONE
Partial evidencePittsburgh, PA, United StatesHQ checked Sep 21, 20265,001-10,0001,386 contacts →

Partial evidence

“System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…”

Source: RevenueBase Database · checked Sep 21, 2026
25
Coworx Staffing Services
Partial evidenceMorristown, NJ, United StatesHQ checked Sep 21, 2026201-5001,286 contacts →

Partial evidence

“CoWorx Staffing Services is one of the largest staffing firms in the U.S.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 9,169 engineered staffing agencies based in the United States

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Engineered staffing agencies based in the United States at a glance

As of Sep 21, 2026
15.4%Verified-email coverage
34.2Average contacts per company
11-50Median size (employees)
3.3%Largest-city concentration · Houston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
3,819
11-50
2,656
51-200
1,625
201-500
559
501-1,000
248
1,001-5,000
185
5,001-10,000
26
10001+
42

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 9,169 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 engineered staffing agencies, 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 “engineered staffing agencies”. 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 engineered staffing agencies), 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 engineered staffing agencies, 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, 48,401 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 21, 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.

Engineered staffing agencies 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 engineered staffing agencies, 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 engineered staffing agencies are there based in the United States?

RevenueBase identified 9,169 engineered staffing agencies 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?

Robert Half, headquartered in Menlo Park, tops this list with the largest team on record.

Which city has the most engineered staffing agencies?

Houston leads with 304 headquartered companies, followed by New York (286) and Atlanta (169).

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 48,401 verified decision-maker contacts tracked across these 9,169 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 9,169 engineered staffing agencies based in the United States. Start with a free account, no credit card.

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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.

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