Company lists · Data refreshed September 2026
Top 25 Quality assurance lab staffing agencies worldwide
RevenueBase identified 2,723 quality assurance lab staffing agencies worldwide as of September 2026 and tracks 50,926 professional contacts across them, including 8,248 with verified work emails. The United States is the largest market and London the largest hub.
This list covers quality assurance lab staffing agencies 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 lab staffing agencies 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 lab staffing agencies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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. | |||||
| 2 | 1,088 contacts → | ||||
Strong 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. | |||||
| 3 | 1,019 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 881 contacts → | ||||
Partial evidence “IMCS Group is an IT, Healthcare, and Professional Staffing Company that helps Enterprises optimize the business value of their Staffing investments and enables them to achieve…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 762 contacts → | ||||
Partial evidence “Integrated Resources Inc.(IRI) is a professional staffing firm specializing in contract, consulting & full time positions in the area of Information Technology, Life Science and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 653 contacts → | ||||
Partial evidence “Trillium Staffing Solutions is an employment service specializing in staffing, training, testing, on-site services, human resources and safety consulting.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 651 contacts → | ||||
Partial evidence “Epic Staffing Group is a diversified national provider of staffing services to the Life Sciences and Healthcare industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 646 contacts → | ||||
Indirect evidence “Malone takes care of business by taking care of people.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 624 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 579 contacts → | ||||
Partial evidence “LINK Staffing has been placing competent, dependable talent with Texas employers since 1980.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 443 contacts → | ||||
Partial evidence “Wise Staffing Group, headquartered in Mississippi, is a full service human resource company specializing in temporary and career staffing with an emphasis on providing excellent…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 383 contacts → | ||||
Indirect evidence “Meet Life Sciences is a global leader in providing bespoke talent solutions to the life sciences industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 336 contacts → | ||||
Partial evidence “We offer powered staffing solutions for your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 316 contacts → | ||||
Indirect evidence “Marathon is one of the largest regional employers, supplying temporary, on-site, contract, contract-to-hire, and direct hire employees to companies throughout the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 310 contacts → | ||||
Partial evidence “Connect Search, LLC is a boutique staffing firm founded by a group of partners who share the same vision and are all recruiters at heart.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 300 contacts → | ||||
Indirect evidence “Somos una compañía de servicios temporales que se dedica al suministro personal en misión para nuestras compañías usuarias.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 299 contacts → | ||||
Indirect evidence “People Built.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 254 contacts → | ||||
Indirect evidence “At Joulé, we believe our world is filled with possibilities – where character, integrity, and commitment drive our purpose.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 242 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 236 contacts → | ||||
Partial evidence “Verstela is a premier staffing provider, offering temporary, temp-to-hire, and direct hire solutions across a wide range of industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 226 contacts → | ||||
Partial evidence “A-Line Staffing Solutions is a premier staffing company that supplies professionals to the Healthcare, Insurance, Pharmaceutical, and Information Technology industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 226 contacts → | ||||
Indirect evidence “Innovative Management Solutions Group launched in 1996 specializes in contingency recruitment services in the fields of Construction, Life Sciences, Engineering, Information…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 203 contacts → | ||||
Partial evidence “At Proclinical Staffing, our life science recruitment services support our partners with permanent and contract vacancies by connecting them with specialist talent across the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 202 contacts → | ||||
Partial evidence “GL Staffing Services is one of the largest privately owned staffing companies in Florida.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 201 contacts → | ||||
Indirect evidence “At Consolidated Engineering Laboratories (CEL) we consider ourselves more than a Testing Laboratory.” 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 lab staffing agencies. 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 lab staffing agencies.
- Partial evidence
- Its own public description names part of quality assurance lab staffing agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name quality assurance lab staffing agencies. 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 2,723 quality assurance lab staffing agencies worldwide
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Quality assurance lab staffing agencies 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 lab 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.
- Coverage
- Every country. Country and city lists for quality assurance lab staffing agencies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “quality assurance lab 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 quality assurance lab 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 quality assurance lab staffing agencies, 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, 8,248 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 lab staffing agencies by location
12 lists · largest firstEvery Quality assurance lab staffing agencies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Quality assurance lab staffing agencies based in the United States1,401
- Quality assurance lab staffing agencies based in the United Kingdom156
- Quality assurance lab staffing agencies based in Germany128
- Quality assurance lab staffing agencies based in Canada114
- Quality assurance lab staffing agencies based in the Netherlands95
- Quality assurance lab staffing agencies based in India86
- Quality assurance lab staffing agencies based in Switzerland40
- Quality assurance lab staffing agencies based in France39
- Quality assurance lab staffing agencies based in Brazil29
Cities
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 lab 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 quality assurance lab staffing agencies are there worldwide?
RevenueBase identified 2,723 quality assurance lab staffing agencies 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?
Labormax Staffing, headquartered in Kearney, tops this list with the largest team on record.
Which country has the most quality assurance lab staffing agencies?
The United States leads with 1,401 companies, followed by the United Kingdom (156) and Germany (128). Every quality assurance lab staffing agencies list by country and city is linked on this page.
Which city has the most quality assurance lab staffing agencies?
London leads with 51 headquartered companies, followed by New York (40) and Houston (31).
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 8,248 verified decision-maker contacts tracked across these 2,723 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.