Company lists · Data refreshed September 2026

Top 25 IT staffing firms worldwide

Name: IT staffing firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 48,376 companies tracked

RevenueBase identified 48,376 IT staffing firms worldwide as of September 2026 and tracks 1,297,550 professional contacts across them, including 209,569 with verified work emails and 206,662 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers IT 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 4, 2026. Country and city lists for IT 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

48,376Companies

1,297,550Contacts tracked

209,569Verified emails

206,662Mobile numbers

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The 25 largest IT staffing firms worldwide

Ranked by team size

Top 25 of 48,376 IT staffing firms worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to IT staffing firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Adecco	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 4, 2026	10001+	139,746 contacts →
	Indirect evidence “Perfect placements.” Source: RevenueBase Database · checked Sep 4, 2026
2	KELLY	Indirect evidence	Troy, TN, United StatesHQ checked Sep 4, 2026	10001+	30,343 contacts →
	Indirect evidence “We’ve been helping organizations find the people they need longer than any other company in the world.” Source: RevenueBase Database · checked Sep 4, 2026
3	Randstad	Indirect evidence	Diemen, NetherlandsHQ checked Sep 4, 2026	10001+	29,792 contacts →
	Indirect evidence “Randstad is the world’s largest talent company and a partner of choice to clients.” Source: RevenueBase Database · checked Sep 4, 2026
4	Robert Half	Partial evidence	Menlo Park, United StatesHQ checked Sep 4, 2026	10001+	25,529 contacts →
	Partial 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 4, 2026
5	HAYS	Indirect evidence	London, IL, United KingdomHQ checked Sep 4, 2026	5,001-10,000	22,596 contacts →
	Indirect evidence “At Hays, we believe that the right job can transform a person's life - and the right person can transform a business.” Source: RevenueBase Database · checked Sep 4, 2026
6	Manpower	Indirect evidence	Milwaukee, PA, United StatesHQ checked Sep 4, 2026	10001+	22,476 contacts →
	Indirect evidence “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Source: RevenueBase Database · checked Sep 4, 2026
7	Insight Global	Indirect evidence	Atlanta, CT, United StatesHQ checked Sep 4, 2026	n/a	15,381 contacts →
	Indirect evidence “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: RevenueBase Database · checked Sep 4, 2026
8	Express Employment International	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 4, 2026	10001+	12,667 contacts →
	Indirect evidence “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Source: RevenueBase Database · checked Sep 4, 2026
9	Randstad USA	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	1,001-5,000	8,538 contacts →
	Indirect evidence “Randstad North America, Inc.” Source: RevenueBase Database · checked Sep 4, 2026
10	Experis	Indirect evidence	Milwaukee, GA, United StatesHQ checked Sep 4, 2026	10001+	7,981 contacts →
	Indirect evidence “Experis® is a global leader in technology services, helping organizations shorten the distance between innovation and business impact in a digital world.” Source: RevenueBase Database · checked Sep 4, 2026
11	Kforce INC	Partial evidence	Tampa, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	6,171 contacts →
	Partial evidence “Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Source: RevenueBase Database · checked Sep 4, 2026
12	Peopleready	Indirect evidence	Tacoma, WA, United StatesHQ checked Sep 4, 2026	10001+	5,500 contacts →
	Indirect evidence “Want to be part of an award-winning team that is reimagining the way people connect with work?” Source: RevenueBase Database · checked Sep 4, 2026
13	Tradesmen International	Indirect evidence	Macedonia, OH, United StatesHQ checked Sep 4, 2026	10001+	5,034 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 4, 2026
14	VOLT	Indirect evidence	Atlanta, CA, United StatesHQ checked Sep 4, 2026	1,001-5,000	4,821 contacts →
	Indirect evidence “Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Source: RevenueBase Database · checked Sep 4, 2026
15	Robert Walters	Indirect evidence	London, CA, United KingdomHQ checked Sep 4, 2026	1,001-5,000	4,626 contacts →
	Indirect evidence “Robert Walters is the world’s most trusted talent solutions business.” Source: RevenueBase Database · checked Sep 4, 2026
16	Appleone Employment Services	Indirect evidence	Glendale, FL, United StatesHQ checked Sep 4, 2026	1,001-5,000	4,615 contacts →
	Indirect evidence “AppleOne Employment Services is a full-service employment company.” Source: RevenueBase Database · checked Sep 4, 2026
17	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	10001+	4,265 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 4, 2026
18	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	10001+	3,928 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 4, 2026
19	Manpower France	Indirect evidence	Puteaux, FranceHQ checked Sep 4, 2026	1,001-5,000	3,645 contacts →
	Indirect evidence “Manpower France est une marque de ManpowerGroup France qui propose aux entreprises des solutions en matière de recrutement sous le label Conseil Recrutement et des solutions aux…” Source: RevenueBase Database · checked Sep 4, 2026
20	Artech L.L.C	Strong evidence	Morristown, CA, United StatesHQ checked Sep 4, 2026	5,001-10,000	3,642 contacts →
	Strong evidence “Artech is the largest Women-Owned IT Staffing Firm in the U.S, with 34+ years of experience powering workforce transformation for Fortune 500 companies and public-sector…” Source: RevenueBase Database · checked Sep 4, 2026
21	Elwood Staffing Services, INC	Indirect evidence	Columbus, UT, United StatesHQ checked Sep 4, 2026	n/a	3,486 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 4, 2026
22	Beacon Hill	Partial evidence	Boston, ID, United StatesHQ checked Sep 4, 2026	1,001-5,000	3,195 contacts →
	Partial evidence “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Source: RevenueBase Database · checked Sep 4, 2026
23	Allegis Group	Indirect evidence	Hanover, United StatesHQ checked Sep 4, 2026	10001+	3,118 contacts →
	Indirect evidence “As the global leader in talent solutions, we take pride in what we do, connecting great people to great opportunities, helping businesses win and careers soar.” Source: RevenueBase Database · checked Sep 4, 2026
24	Pyramid Consulting, INC	Indirect evidence	Worldwide, ON, United StatesHQ checked Sep 4, 2026	5,001-10,000	2,866 contacts →
	Indirect evidence “Pyramid Consulting, a global leader in workforce and technology solutions, empowers individuals and organizations to transform and thrive in the most challenging and competitive…” Source: RevenueBase Database · checked Sep 4, 2026
25	Randstad Digital Americas	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	10001+	2,766 contacts →
	Indirect evidence “Randstad Digital is a trusted digital enablement partner that facilitates accelerated transformation for businesses by providing global talent, capacity, and solutions across…” Source: RevenueBase Database · checked Sep 4, 2026

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: IT 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 IT staffing firms.
Partial evidence: Its own public description names part of IT staffing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT 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 48,376 IT staffing firms worldwide

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IT staffing firms worldwide at a glance

As of Sep 4, 2026

16.2%Verified-email coverage

15.9%Mobile-number coverage

26.8Average contacts per company

1-10Median size (employees)

4.7%Largest-city concentration · London

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

24,898

11-50

13,523

51-200

6,331

201-500

1,928

501-1,000

711

1,001-5,000

541

5,001-10,000

10001+

128

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 IT 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: 38 countries, largest first: the United States, the United Kingdom, Canada, the Netherlands, Germany, Australia, France, Brazil, South Africa, Poland and 28 more. Country and city lists for IT staffing firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “IT 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 IT 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 IT 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, 209,569 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 4, 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.

IT staffing firms by location

256 lists · largest first

Every IT staffing firms 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 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 IT 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 IT staffing firms are there worldwide?

RevenueBase identified 48,376 IT 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?

Adecco, headquartered in Bilbo, tops this list with the largest team on record.

Which country has the most IT staffing firms?

The United States leads with 21,563 companies, followed by the United Kingdom (6,575) and Canada (2,480). Every IT staffing firms list by country and city is linked on this page.

Which city has the most IT staffing firms?

London leads with 2254 headquartered companies, followed by New York (879) and Toronto (687).

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 209,569 verified decision-maker contacts tracked across these 48,376 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 4, 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.