Company lists · Data refreshed September 2026

Top 25 Project-based staffing companies worldwide

Name: Project-based staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 33,590 companies tracked

RevenueBase identified 33,590 company matches for project-based staffing companies worldwide as of September 2026 and tracks 1,186,917 professional contacts across them, including 164,789 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for project-based staffing companies 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 29, 2026. Country and city lists for project-based staffing companies 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 29, 2026 How this list was built

33,590Companies

1,186,917Contacts tracked

164,789Verified emails

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The 25 largest project-based staffing companies worldwide

Ranked by team size

Top 25 of 33,590 company matches for project-based staffing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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	Adecco	Exact match	Zurich, SwitzerlandHQ recorded Sep 29, 2026	10001+	141,230 contacts →
	Exact match “Perfect placements.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	KELLY	Exact match	Troy, MI, United StatesHQ recorded Sep 29, 2026	10001+	30,378 contacts →
	Exact match “We’ve been helping organizations find the people they need longer than any other company in the world.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Randstad	Exact match	Diemen, NetherlandsHQ recorded Sep 29, 2026	10001+	30,074 contacts →
	Exact match “Randstad is the world’s largest talent company and a partner of choice to clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Robert Half	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 29, 2026	10001+	25,574 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Manpower	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 29, 2026	10001+	22,508 contacts →
	Exact match “Manpower is the global leader in contingent and permanent recruitment workforce solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Aerotek	Exact match	Hanover, MD, United StatesHQ recorded Sep 29, 2026	n/a	18,268 contacts →
	Exact match “From economic headwinds to talent complexities, the challenges facing North American industry are real.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Insight Global	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 2026	n/a	15,553 contacts →
	Exact match “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	Express Employment International	Exact match	Oklahoma City, OK, United StatesHQ recorded Sep 29, 2026	10001+	12,647 contacts →
	Exact match “Founded in 1983 and corporately headquartered in Oklahoma City, Express Employment International supports the Express Employment Professionals franchise and related brands.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	GI Group	Exact match	Milan, United StatesHQ recorded Sep 29, 2026	1,001-5,000	11,772 contacts →
	Exact match “We are Gi Group, one of the world’s leading providers of operational workforce solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Randstad USA	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	8,522 contacts →
	Exact match “Randstad North America, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Kforce INC	Exact match	Tampa, FL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	6,147 contacts →
	Exact match “Kforce is a solutions firm specializing in technology, finance and accounting, and professional staffing services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Peopleready	Exact match	Tacoma, WA, United StatesHQ recorded Sep 29, 2026	10001+	5,482 contacts →
	Exact match “Want to be part of an award-winning team that is reimagining the way people connect with work?” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Tradesmen International	Exact match	Macedonia, OH, United StatesHQ recorded Sep 29, 2026	10001+	4,999 contacts →
	Exact match “Founded in 1992, Tradesmen International is North America’s premier resource for proven skilled craftsmen and labor consulting services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Lancesoft, INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	4,877 contacts →
	Exact match “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	VOLT	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	4,831 contacts →
	Exact match “Volt (an Innova Solutions affiliate) is a multi-award winning global workforce solutions provider that propels businesses and careers forward with expert momentum.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Brunel	Exact match	Amsterdam, GermanyHQ recorded Sep 29, 2026	10001+	4,633 contacts →
	Exact match “At Brunel, we help organisations solve workforce challenges and deliver critical projects through the power of people.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Appleone Employment Services	Exact match	Glendale, CA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
18	Spherion	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
19	Select Staffing	Exact match	Atlanta, GA, United StatesHQ recorded Sep 29, 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 29, 2026 · View company records in RevenueBase
20	Artech L.L.C	Exact match	Morristown, NJ, United StatesHQ recorded Sep 29, 2026	5,001-10,000	3,674 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Manpower France	Exact match	Puteaux, FranceHQ recorded Sep 29, 2026	1,001-5,000	3,619 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Elwood Staffing Services, INC	Exact match	Columbus, IN, United StatesHQ recorded Sep 29, 2026	n/a	3,481 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Beacon Hill	Exact match	Boston, MA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	3,238 contacts →
	Exact match “Beacon Hill was founded to set a new standard in search, career placement and flexible staffing.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Randstad India	Exact match	Chennai, IndiaHQ recorded Sep 29, 2026	1,001-5,000	3,145 contacts →
	Exact match “Randstad is the world’s largest talent company and a partner of choice to clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	NES Fircroft	Exact match	Altrincham, United KingdomHQ recorded Sep 29, 2026	1,001-5,000	2,951 contacts →
	Exact match “With over 90 years’ combined experience of delivering workforce solutions to the global energy industry, NES Fircroft is proud to be the world’s leading engineering staffing…” Recorded in the RevenueBase company graph · Sep 29, 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 “project-based staffing companies”. 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 33,590 project-based staffing companies worldwide

See the full list, filter by size, metro and specialty, and access 164,789 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Project-based staffing companies worldwide at a glance

As of Sep 29, 2026

13.9%Verified-email coverage

35.3Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

13,437

11-50

10,000

51-200

5,927

201-500

2,092

501-1,000

940

1,001-5,000

763

5,001-10,000

150

10001+

177

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 project-based staffing companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “project-based staffing companies” 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 164,789 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 29, 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.

Project-based staffing companies by location

174 lists · largest first

Every Project-based staffing companies 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 “project-based staffing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many project-based staffing companies are there worldwide?

RevenueBase identified 33,590 company matches for project-based staffing companies 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?

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

Which country has the most project-based staffing companies?

The United States leads with 11,624 companies, followed by India (3,129) and the United Kingdom (2,589). Every project-based staffing companies list by country and city is linked on this page.

Which city has the most project-based staffing companies?

London leads with 662 company records, followed by New York (382) and Houston (350).

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 164,789 professional contacts with verified work emails tracked across these 33,590 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 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 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.