Company lists · Data refreshed September 2026

Top 25 Project staffing services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 29,458 companies tracked

RevenueBase identified 29,458 company matches for project staffing services worldwide as of September 2026 and tracks 1,064,867 professional contacts across them, including 148,212 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for project staffing services 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 staffing services 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

29,458Companies

1,064,867Contacts tracked

148,212Verified emails

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The 25 largest project staffing services worldwide

Ranked by team size

Top 25 of 29,458 company matches for project staffing services 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	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
3	Manpowergroup	Exact match	Milwaukee, WI, United StatesHQ recorded Sep 29, 2026	10001+	27,063 contacts →
	Exact match “ManpowerGroup® (NYSE: MAN), the leading global workforce solutions company, helps organizations transform in a fast-changing world of work by sourcing, assessing, developing and…” 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	HAYS	Exact match	London, United KingdomHQ recorded Sep 29, 2026	5,001-10,000	22,731 contacts →
	Exact match “At Hays, we believe that the right job can transform a person's life - and the right person can transform a business.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	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
7	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
8	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
9	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
10	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
11	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
12	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
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	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
24	Allegis Group	Exact match	Hanover, MD, United StatesHQ recorded Sep 29, 2026	10001+	3,103 contacts →
	Exact match “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.” 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 staffing services”. 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 29,458 project staffing services worldwide

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Project staffing services worldwide at a glance

As of Sep 29, 2026

13.9%Verified-email coverage

36.1Average contacts per company

11-50Median size (employees)

2.4%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

12,028

11-50

8,804

51-200

4,971

201-500

1,805

501-1,000

807

1,001-5,000

670

5,001-10,000

126

10001+

158

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 staffing services are linked below.
What qualifies: Company records worldwide whose business descriptions match “project staffing services” 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 148,212 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 staffing services by location

151 lists · largest first

Every Project staffing services 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 staffing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many project staffing services are there worldwide?

RevenueBase identified 29,458 company matches for project staffing services 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 staffing services?

The United States leads with 8,246 companies, followed by the United Kingdom (2,875) and India (2,863). Every project staffing services list by country and city is linked on this page.

Which city has the most project staffing services?

London leads with 708 company records, followed by Hyderabad (295) and New York (279).

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 148,212 professional contacts with verified work emails tracked across these 29,458 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.