Company lists · Data refreshed September 2026

Top 25 Cleanroom staffing agencies worldwide

Name: Cleanroom staffing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 10,519 companies tracked

RevenueBase identified 10,519 company matches for cleanroom staffing agencies worldwide as of September 2026 and tracks 225,709 professional contacts across them, including 31,245 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for cleanroom staffing agencies worldwide, 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 27, 2026. Country and city lists for cleanroom staffing agencies follow the table.

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 27, 2026 How this list was built

10,519Companies

225,709Contacts tracked

31,245Verified emails

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The 25 largest cleanroom staffing agencies worldwide

Ranked by team size

Top 25 of 10,519 company matches for cleanroom staffing agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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	Appleone Employment Services	Exact match	Glendale, CA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	4,627 contacts →
	Exact match “AppleOne Employment Services is a full-service employment company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
3	Select Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	10001+	3,934 contacts →
	Exact match “Select Staffing is a leading provider of temporary staffing and employment services in the U.S, with nationwide operations across multiple contingent staffing sectors.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	RAS Intérim	Exact match	Lyon, FranceHQ recorded Sep 27, 2026	501-1,000	2,001 contacts →
	Exact match “Créée en 1969, R.A.S Intérim est depuis 1994 une entreprise unique en France puisqu’elle offre une prestation de service disponible 7 J/ 7, 24 H/ 24 et sans interruption.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Remedy Intelligent Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 2026	10001+	1,948 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Labormax Staffing	Exact match	Kearney, MO, United StatesHQ recorded Sep 27, 2026	n/a	1,755 contacts →
	Exact match “LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	MEDIX	Exact match	Chicago, IL, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
8	Synergie Italia	Exact match	Torino, ItalyHQ recorded Sep 27, 2026	501-1,000	1,748 contacts →
	Exact match “L’Italia è piena di talenti: il nostro lavoro è riconoscerli!” Synergie Italia S.p.A.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Magna Infotech	Exact match	Bangalore, IndiaHQ recorded Sep 27, 2026	10001+	1,702 contacts →
	Exact match “We are the largest IT staff augmentation provider in India, with employees spread across 500+ skill sets.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Resourcemfg	Exact match	Atlanta, GA, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
11	Onin Staffing	Exact match	Birmingham, AL, United StatesHQ recorded Sep 27, 2026	10001+	1,614 contacts →
	Exact match “Ōnin Staffing, a company of The Ōnin Group, is a national light industrial and clerical staffing agency.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Nesco Resource	Exact match	Mayfield Heights, OH, United StatesHQ recorded Sep 27, 2026	501-1,000	1,599 contacts →
	Exact match “Companies need talent.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Infotree Global Solutions	Exact match	Plymouth, MI, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,545 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	SELF	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	n/a	1,431 contacts →
	Exact match “We are a Full Service Solutions Company specializing in placements of professionals in Information Technology, Finance/Accounting, Energy (front, mid and back office)…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Coworx Staffing Services	Exact match	Morristown, NJ, United StatesHQ recorded Sep 27, 2026	201-500	1,286 contacts →
	Exact match “CoWorx Staffing Services is one of the largest staffing firms in the U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	Quess IT Staffing	Exact match	Bangalore, IndiaHQ recorded Sep 27, 2026	10001+	1,232 contacts →
	Exact match “Quess IT Staffing is India’s largest IT staffing company with over 20 years of experience in placing IT professionals across 300+ companies, covering a wide range of levels and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Ultimate Staffing	Exact match	Orange, CA, United StatesHQ recorded Sep 27, 2026	501-1,000	1,196 contacts →
	Exact match “Meet Ultimate Staffing: Ultimate Staffing Services, a business line of Roth Staffing Companies, specializes in delivering temporary, temporary-to-hire, and direct hire services…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	TRS Staffing Solutions	Exact match	Greenville, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
19	Planet Pharma	Exact match	Raleigh, NC, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,088 contacts →
	Exact match “Founded in 2012, Planet Pharma is a global leader in life sciences recruitment and staffing, specializing in Pharmaceuticals, Biotechnology, Medical Device, Labs & Healthcare…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	247hire	Exact match	Oak Brook, IL, United StatesHQ recorded Sep 27, 2026	201-500	1,059 contacts →
	Exact match “At 247Hire, our mission is simple: to empower yours.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	In JOB	Exact match	Verona, ItalyHQ recorded Sep 27, 2026	1,001-5,000	1,024 contacts →
	Exact match “inJob è una società specializzata nella ricerca, selezione e somministrazione di professionisti qualificati con contratti a tempo determinato e indeterminato.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	QPS Employment Group	Exact match	Brookfield, WI, United StatesHQ recorded Sep 27, 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 27, 2026 · View company records in RevenueBase
23	Lyneer Staffing Solutions	Exact match	Ewing, NJ, United StatesHQ recorded Sep 27, 2026	201-500	1,012 contacts →
	Exact match “The Solution to Your Staffing Needs Lyneer Staffing Solutions is a national workforce solutions company with over 25 years of experience in the staffing industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Hire Dynamics	Exact match	Duluth, GA, United StatesHQ recorded Sep 27, 2026	201-500	1,002 contacts →
	Exact match “Opportunities.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Career Strategies	Exact match	Round Rock, TX, United StatesHQ recorded Sep 27, 2026	n/a	955 contacts →
	Exact match “Career Strategies is a full service staffing firm specializing in Property Management, Healthcare and Professional Services recruitment.” Recorded in the RevenueBase company graph · Sep 27, 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 “cleanroom staffing agencies”. 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 10,519 cleanroom staffing agencies worldwide

See the full list, filter by size, metro and specialty, and access 31,245 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cleanroom staffing agencies worldwide at a glance

As of Sep 27, 2026

13.8%Verified-email coverage

21.5Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Houston

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

4,353

11-50

3,103

51-200

1,807

201-500

681

501-1,000

264

1,001-5,000

200

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for cleanroom staffing agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “cleanroom staffing agencies” 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. 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 31,245 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 27, 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.

Cleanroom staffing agencies by location

49 lists · largest first

Every Cleanroom staffing agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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

How many cleanroom staffing agencies are there worldwide?

RevenueBase identified 10,519 company matches for cleanroom staffing agencies worldwide 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?

Appleone Employment Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most cleanroom staffing agencies?

The United States leads with 4,966 companies, followed by India (776) and Germany (597). Every cleanroom staffing agencies list by country and city is linked on this page.

Which city has the most cleanroom staffing agencies?

Houston leads with 141 company records, followed by New York (129) and London (109).

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 31,245 professional contacts with verified work emails tracked across these 10,519 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 27, 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.