Company lists · Data refreshed September 2026

Top 25 Interim leadership staffing companies worldwide

Name: Interim leadership staffing companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 9,595 companies tracked

RevenueBase identified 9,595 interim leadership staffing companies worldwide as of September 2026 and tracks 157,215 professional contacts across them, including 25,519 with verified work emails. The United States is the largest market and London the largest hub.

This list covers interim leadership staffing companies 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 28, 2026. Country and city lists for interim leadership staffing companies 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 28, 2026 86% judged on-target in blind review

9,595Companies

157,215Contacts tracked

25,519Verified emails

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The 25 largest interim leadership staffing companies worldwide

Ranked by team size

Top 25 of 9,595 interim leadership staffing companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to interim leadership staffing companies: 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	Spherion	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	10001+	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 28, 2026
2	Select Staffing	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	10001+	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 28, 2026
3	RAS Intérim	Partial evidence	Lyon, FranceHQ checked Sep 28, 2026	501-1,000	2,001 contacts →
	Partial 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 28, 2026
4	Synergie Italia	Indirect evidence	Torino, ItalyHQ checked Sep 28, 2026	501-1,000	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 28, 2026
5	Elite Staffing INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	10001+	1,661 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
6	System ONE	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,386 contacts →
	Partial evidence “System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…” Source: RevenueBase Database · checked Sep 28, 2026
7	Coworx Staffing Services	Partial evidence	Morristown, NJ, United StatesHQ checked Sep 28, 2026	201-500	1,286 contacts →
	Partial evidence “CoWorx Staffing Services is one of the largest staffing firms in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
8	Ultimate Staffing	Partial evidence	Orange, CA, United StatesHQ checked Sep 28, 2026	501-1,000	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 28, 2026
9	Accounting & Finance Professionals	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	n/a	973 contacts →
	Partial evidence “With over a decade of experience, we specialize in Finance, Accounting, Administrative, and Executive staffing markets.” Source: RevenueBase Database · checked Sep 28, 2026
10	Procom	Partial evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	201-500	971 contacts →
	Partial evidence “Procom is one of North America’s leading staffing and contract workforce services providers.” Source: RevenueBase Database · checked Sep 28, 2026
11	Career Strategies	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 28, 2026	n/a	955 contacts →
	Partial evidence “Career Strategies is a full service staffing firm specializing in Property Management, Healthcare and Professional Services recruitment.” Source: RevenueBase Database · checked Sep 28, 2026
12	Amadeus Fire	Indirect evidence	Frankfurt Am Main, GermanyHQ checked Sep 28, 2026	1,001-5,000	943 contacts →
	Indirect evidence “Amadeus Fire - Verstehen.” Source: RevenueBase Database · checked Sep 28, 2026
13	Boyden	Indirect evidence	Tarrytown, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	939 contacts →
	Indirect evidence “Transforming today’s organisations with tomorrow’s leaders.” Source: RevenueBase Database · checked Sep 28, 2026
14	BLU By Adcorp SA	Partial evidence	Gallo Manor, South AfricaHQ checked Sep 28, 2026	501-1,000	923 contacts →
	Partial evidence “BLU by Adcorp is a leading provider of contingent staffing and workforce management solutions across South Africa and Australia.” Source: RevenueBase Database · checked Sep 28, 2026
15	Remx The Workforce Experts	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	901 contacts →
	Partial evidence “RemX is the professional staffing division of EmployBridge, a $3 billion staffing organization with more than 600 offices in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
16	Interaction Interim	Partial evidence	Rennes, FranceHQ checked Sep 28, 2026	501-1,000	878 contacts →
	Partial evidence “Avec un large maillage national d'agences d'intérim, Interaction déploie ses services à l'emploi auprès des entreprises, dans tous les secteurs d'activités en proposant travail…” Source: RevenueBase Database · checked Sep 28, 2026
17	Oliver James	Indirect evidence	Manchester, United KingdomHQ checked Sep 28, 2026	501-1,000	870 contacts →
	Indirect evidence “At Oliver James, we deliver flexible hiring solutions tailored to your business needs across financial services, professional services, commerce & industry.” Source: RevenueBase Database · checked Sep 28, 2026
18	Medpro Healthcare Staffing	Partial evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 28, 2026	501-1,000	855 contacts →
	Partial evidence “MedPro Healthcare Staffing is a Joint Commission certified, leading provider of temporary and contract staffing services to healthcare facilities throughout the United States.” Source: RevenueBase Database · checked Sep 28, 2026
19	The Liberty Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	849 contacts →
	Partial evidence “The Liberty Group is a national multifamily staffing partner connecting property teams with experienced talent that keeps operations moving.” Source: RevenueBase Database · checked Sep 28, 2026
20	JKS A S	Indirect evidence	Ringkøbing, DenmarkHQ checked Sep 28, 2026	1,001-5,000	822 contacts →
	Indirect evidence “We are JKS.” Source: RevenueBase Database · checked Sep 28, 2026
21	Daoust	Indirect evidence	Brussels, BelgiumHQ checked Sep 28, 2026	201-500	812 contacts →
	Indirect evidence “DaJobs (formerly Daoust) has been an established HR company for over 70 years and is a trusted player in the Belgian labour market.” Source: RevenueBase Database · checked Sep 28, 2026
22	Florence Doré	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1,001-5,000	780 contacts →
	Indirect evidence “Spécialisé dans les métiers de l’accueil depuis plus de 50 ans, Florence Doré s’est développé, depuis plusieurs années dans le détachement de nombreux autres talents auprès de ses…” Source: RevenueBase Database · checked Sep 28, 2026
23	Genesis10	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	731 contacts →
	Indirect evidence “Genesis10 connects companies and professionals through every stage of the hiring journey.” Source: RevenueBase Database · checked Sep 28, 2026
24	Penmac Staffing Services, INC	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 28, 2026	n/a	717 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
25	DPA Professionals	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 28, 2026	1,001-5,000	694 contacts →
	Indirect evidence “DPA is de specialist in detacheren.” Source: RevenueBase Database · checked Sep 28, 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: interim leadership staffing companies. 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 interim leadership staffing companies.
Partial evidence: Its own public description names part of interim leadership staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interim leadership staffing companies. 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 9,595 interim leadership staffing companies worldwide

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Interim leadership staffing companies worldwide at a glance

As of Sep 28, 2026

16.2%Verified-email coverage

16.4Average contacts per company

1-10Median size (employees)

1.9%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

5,456

11-50

2,157

51-200

1,129

201-500

438

501-1,000

189

1,001-5,000

146

5,001-10,000

10001+

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 interim leadership staffing companies, 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 interim leadership staffing companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “interim leadership staffing companies”. 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 interim leadership staffing companies), 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 interim leadership staffing companies, 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, 25,519 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 28, 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.

Interim leadership staffing companies by location

40 lists · largest first

Every Interim leadership 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 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 interim leadership staffing companies, 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 interim leadership staffing companies are there worldwide?

RevenueBase identified 9,595 interim leadership staffing companies 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 interim leadership staffing companies?

The United States leads with 2,689 companies, followed by the Netherlands (1,440) and Germany (712). Every interim leadership staffing companies list by country and city is linked on this page.

Which city has the most interim leadership staffing companies?

London leads with 180 headquartered companies, followed by Paris (132) and New York (131).

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 25,519 verified decision-maker contacts tracked across these 9,595 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 28, 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.