Company lists · Data refreshed November 2026

Top 25 Professional services outsourcing firms worldwide

RevenueBase identified 36,966 company matches for professional services outsourcing firms worldwide as of November 2026 and tracks 603,141 professional contacts across them, including 109,444 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for professional services outsourcing firms 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 November 5, 2026. Country and city lists for professional services outsourcing firms 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 Nov 5, 2026 How this list was built
36,966Companies
603,141Contacts tracked
109,444Verified emails
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The 25 largest professional services outsourcing firms worldwide

Ranked by team size
Top 25 of 36,966 company matches for professional services outsourcing firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchGurgaon, IndiaHQ recorded Nov 5, 202610001+30,313 contacts →

Exact match

“KPMG entities in India are established under the laws of India and are owned and managed (as the case may be) by established Indian professionals.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchAtlanta, GA, United StatesHQ recorded Nov 5, 20261,001-5,0009,496 contacts →

Exact match

“Randstad North America, Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchMenlo Park, United StatesHQ recorded Nov 5, 20265,001-10,0009,086 contacts →

Exact match

“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchCali, ColombiaHQ recorded Nov 5, 202610001+5,573 contacts →

Exact match

“Incrementamos la productividad y eficiencia de nuestros clientes- Más de 40 años de experiencia en el mercado- Líderes en Soluciones de Mercadeo, Trade Marketing, Ventas y Gestión…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchAuckland, New ZealandHQ recorded Nov 5, 20261,001-5,0004,572 contacts →

Exact match

“Creative people together transforming the world is our vision.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchAustin, TX, United StatesHQ recorded Nov 5, 20261,001-5,0004,314 contacts →

Exact match

“Integreon is a trusted provider of legal, creative and business outsourced services to corporations and law firms worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchSouthport, AustraliaHQ recorded Nov 5, 20261,001-5,0004,098 contacts →

Exact match

“Don’t wait until understaffing eats away at your productivity and client satisfaction.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchDallas, CA, United StatesHQ recorded Nov 5, 20261,001-5,0003,958 contacts →

Exact match

“RGP (Nasdaq: RGP) has been redefining professional services for 30 years by closing the gap between advice and execution.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchSignal Hill, CA, United StatesHQ recorded Nov 5, 20261,001-5,0002,906 contacts →

Exact match

“Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchHanover, United StatesHQ recorded Nov 5, 20261,001-5,0002,643 contacts →

Exact match

“Aston Carter provides world-class corporate talent solutions to thousands of clients across the globe.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchJakarta Pusat, IndonesiaHQ recorded Nov 5, 20261,001-5,0002,272 contacts →

Exact match

“PT Danamas Insan Kreasi Andalan (DIKA) adalah solusi outsourcing terpercaya untuk membantu bisnis Anda tumbuh lebih cepat dan efisien.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchAtlanta, GA, United StatesHQ recorded Nov 5, 202610001+2,182 contacts →

Exact match

“Remedy Intelligent Staffing is a nationwide professional staffing organization with more than 50 years of recruiting and selection expertise to match job candidates with positions…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchDublin 4, IrelandHQ recorded Nov 5, 20261,001-5,0002,025 contacts →

Exact match

“Hello.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchChicago, IL, United StatesHQ recorded Nov 5, 20261,001-5,0001,918 contacts →

Exact match

“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCopenhagen, DenmarkHQ recorded Nov 5, 20261,001-5,0001,884 contacts →

Exact match

“emagine is a high-end business & IT consulting company challenging the way businesses leverage high-end expertise.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchTurin, ItalyHQ recorded Nov 5, 2026501-1,0001,844 contacts →

Exact match

“L’Italia è piena di talenti: il nostro lavoro è riconoscerli!” Synergie Italia S.p.A.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchJakarta, IndonesiaHQ recorded Nov 5, 2026501-1,0001,729 contacts →

Exact match

“BDO is the leading provider of professional services within the mid-tier of our profession.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 20261,001-5,0001,712 contacts →

Exact match

“Yacht is dé organisatie van en voor professionals.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchVila Mariana, BrazilHQ recorded Nov 5, 20261,001-5,0001,703 contacts →

Exact match

“Fundado em 1981, o Grupo Mazzini se destaca pela especialização na prestação e gestão de serviços terceirizados, mão de obra temporária, trade marketing, facilities e unidades de…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchOslo, NorwayHQ recorded Nov 5, 20261,001-5,0001,697 contacts →

Exact match

“PwC er et ledende globalt kompetansehus som bidrar med kunnskap, innsikt og verdiskapning.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchHyderabad, IndiaHQ recorded Nov 5, 202610001+1,690 contacts →

Exact match

“NSPIRA Management Services Pvt Ltd offers customized services to organizations that aim for professional excellence.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBuenos Aires, ArgentinaHQ recorded Nov 5, 202610001+1,640 contacts →

Exact match

“Desde su formación en 1997, GRUPO GESTIÓN se afianzó en el país, a través de sus diferentes Unidades de Negocio, como uno de los líderes de Compañías especializadas en la…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchLas Condes, ChileHQ recorded Nov 5, 20265,001-10,0001,629 contacts →

Exact match

“Somos una empresa especializada en entregar servicios integrados en el sector de recursos humanos comprometida con los procesos y necesidades de cada uno de nuestros clientes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchPittsburgh, PA, United StatesHQ recorded Nov 5, 20265,001-10,0001,625 contacts →

Exact match

“System One is a leading provider of specialized, highly technical outsourced services, workforce solutions, staffing, and recruiting to critical infrastructure, technology, life…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchSalvador - São Paulo, BrazilHQ recorded Nov 5, 202610001+1,597 contacts →

Exact match

“Fundado em Dezembro de 2001, o Grupo MAP traz em seu DNA a arte de servir e o compromisso de manter seus clientes sempre satisfeitos.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 36,966 professional services outsourcing firms worldwide

See the full list, filter by size, metro and specialty, and access 109,444 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Professional services outsourcing firms worldwide at a glance

As of Nov 5, 2026
18.1%Verified-email coverage
16.3Average contacts per company
1-10Median size (employees)
1.9%Largest-city concentration · Sao Paulo
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
20,973
11-50
10,351
51-200
3,268
201-500
1,085
501-1,000
483
1,001-5,000
386
5,001-10,000
90
10001+
72

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 professional services outsourcing firms are linked below.
What qualifies
Company records worldwide whose business descriptions match “professional services outsourcing firms” 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 109,444 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 November 5, 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.

Professional services outsourcing firms by location

187 lists · largest first

Every Professional services outsourcing 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 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 “professional services outsourcing firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many professional services outsourcing firms are there worldwide?

RevenueBase identified 36,966 company matches for professional services outsourcing firms worldwide as of November 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?

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

Which country has the most professional services outsourcing firms?

The United States leads with 4,712 companies, followed by India (3,231) and Brazil (3,019). Every professional services outsourcing firms list by country and city is linked on this page.

Which city has the most professional services outsourcing firms?

Sao Paulo leads with 691 company records, followed by London (442) and Paris (313).

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 109,444 professional contacts with verified work emails tracked across these 36,966 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 November 5, 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.