Company lists · Data refreshed September 2026
Top 25 Quality assurance staffing firms worldwide
RevenueBase identified 12,163 quality assurance staffing firms worldwide as of September 2026 and tracks 275,882 professional contacts across them, including 38,701 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers quality assurance staffing firms worldwide, 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 29, 2026. Country and city lists for quality assurance staffing firms follow the table.
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.
The 25 largest quality assurance staffing firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,454 contacts → | ||||
Indirect evidence “Samsic Emploi a été classée meilleure enseigne de travail temporaire par Capital, pour la 4ème année consécutive.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,061 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,001 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,840 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 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,755 contacts → | ||||
Strong evidence “LaborMAX Staffing is your reliable provider of quality pre-screened contingent workers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,753 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,748 contacts → | ||||
Indirect evidence “L’Italia è piena di talenti: il nostro lavoro è riconoscerli!” Synergie Italia S.p.A.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,702 contacts → | ||||
Indirect evidence “We are the largest IT staff augmentation provider in India, with employees spread across 500+ skill sets.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,683 contacts → | ||||
Indirect evidence “We make it all about you.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,661 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,639 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,599 contacts → | ||||
Indirect evidence “Companies need talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,545 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 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,493 contacts → | ||||
Indirect evidence “Adecco Medical est le leader des solutions emploi des professionnels de la santé : Infirmier, IADE, IBODE, aide-soignant, Kinésithérapeute, Pharmacien, Ergothérapeute, Médecin, ….” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,286 contacts → | ||||
Partial evidence “CoWorx Staffing Services is one of the largest staffing firms in the U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,232 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,196 contacts → | ||||
Partial evidence “Meet Ultimate Staffing: Ultimate Staffing Services, a business line of Roth Staffing Companies, specializes in delivering temporary, temporary-to-hire, and direct hire services…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,187 contacts → | ||||
Partial evidence “TRS Staffing Solutions is a world leading engineering recruitment agency specialising in the recruitment and supply of professional, engineering, technical and field talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,171 contacts → | ||||
Partial evidence “LocumTenens.com specializes in optimizing healthcare staffing operations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,170 contacts → | ||||
Partial evidence “TotalMed provides temporary, contract, and full time staffing services to hospitals, medical groups, health plans, and life sciences companies who require staffing assistance in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,088 contacts → | ||||
Partial evidence “Founded in 2012, Planet Pharma is a global leader in life sciences recruitment and staffing, specializing in Pharmaceuticals, Biotechnology, Medical Device, Labs & Healthcare…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,054 contacts → | ||||
Indirect evidence “En Manpower creemos en las personas y en el papel que representa el trabajo en sus vidas.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: quality assurance staffing firms. 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 quality assurance staffing firms.
- Partial evidence
- Its own public description names part of quality assurance staffing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name quality assurance staffing firms. 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 12,163 quality assurance staffing firms worldwide
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Quality assurance staffing firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 quality assurance staffing firms, 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.
- Coverage
- Every country. Country and city lists for quality assurance staffing firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “quality assurance staffing firms”. 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 quality assurance staffing firms), 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 quality assurance staffing firms, and records with no verified work email.
- 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, 38,701 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 29, 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.
Quality assurance staffing firms by location
60 lists · largest firstEvery Quality assurance staffing firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Quality assurance staffing firms based in the United States5,913
- Quality assurance staffing firms based in India870
- Quality assurance staffing firms based in the United Kingdom641
- Quality assurance staffing firms based in Germany546
- Quality assurance staffing firms based in Canada496
- Quality assurance staffing firms based in the Netherlands432
- Quality assurance staffing firms based in France168
- Quality assurance staffing firms based in Switzerland126
- Quality assurance staffing firms based in Brazil115
- Quality assurance staffing firms based in Australia114
- Quality assurance staffing firms based in South Africa95
- Quality assurance staffing firms based in Sweden79
- Quality assurance staffing firms based in Belgium50
- Quality assurance staffing firms based in Norway47
- Quality assurance staffing firms based in Denmark42
- Quality assurance staffing firms based in Mexico40
- Quality assurance staffing firms based in Spain36
- Quality assurance staffing firms based in Austria35
- Quality assurance staffing firms based in New Zealand25
Cities
- Quality assurance staffing firms based in Houston, United States169
- Quality assurance staffing firms based in New York, United States163
- Quality assurance staffing firms based in London, United Kingdom156
- Quality assurance staffing firms based in Hyderabad, India118
- Quality assurance staffing firms based in Atlanta, United States117
- Quality assurance staffing firms based in Dallas, United States108
- Quality assurance staffing firms based in Toronto, Canada104
- Quality assurance staffing firms based in Chicago, United States86
- Quality assurance staffing firms based in Austin, United States84
- Quality assurance staffing firms based in Mississauga, Canada70
- Quality assurance staffing firms based in San Diego, United States58
- Quality assurance staffing firms based in Boston, United States51
- Quality assurance staffing firms based in Los Angeles, United States51
- Quality assurance staffing firms based in Phoenix, United States49
- Quality assurance staffing firms based in Bangalore, India48
- Quality assurance staffing firms based in Denver, United States44
- Quality assurance staffing firms based in Berlin, Germany42
- Quality assurance staffing firms based in Charlotte, United States42
- Quality assurance staffing firms based in San Francisco, United States41
- Quality assurance staffing firms based in Orlando, United States40
- Quality assurance staffing firms based in Indianapolis, United States38
- Quality assurance staffing firms based in Miami, United States38
- Quality assurance staffing firms based in Irving, United States37
- Quality assurance staffing firms based in Wilmington, United States37
- Quality assurance staffing firms based in Tampa, United States36
- Quality assurance staffing firms based in Columbus, United States35
- Quality assurance staffing firms based in Philadelphia, United States33
- Quality assurance staffing firms based in San Antonio, United States33
- Quality assurance staffing firms based in Cincinnati, United States32
- Quality assurance staffing firms based in Plano, United States32
- Quality assurance staffing firms based in Raleigh, United States32
- Quality assurance staffing firms based in San Jose, United States32
- Quality assurance staffing firms based in Washington, United States32
- Quality assurance staffing firms based in Irvine, United States31
- Quality assurance staffing firms based in Hamburg, Germany30
- Quality assurance staffing firms based in Dover, United States29
- Quality assurance staffing firms based in Alpharetta, United States28
- Quality assurance staffing firms based in Paris, France27
- Quality assurance staffing firms based in Portland, United States27
- Quality assurance staffing firms based in Edison, United States26
- Quality assurance staffing firms based in Stockholm, Sweden26
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 quality assurance staffing firms, 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 quality assurance staffing firms are there worldwide?
RevenueBase identified 12,163 quality assurance staffing firms worldwide 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?
Spherion, headquartered in Atlanta, tops this list with the largest team on record.
Which country has the most quality assurance staffing firms?
The United States leads with 5,913 companies, followed by India (870) and the United Kingdom (641). Every quality assurance staffing firms list by country and city is linked on this page.
Which city has the most quality assurance staffing firms?
Houston leads with 169 headquartered companies, followed by London (167) and New York (163).
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 38,701 verified decision-maker contacts tracked across these 12,163 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 29, 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.