Company lists · Data refreshed September 2026

Top 25 Global business process outsourcing firms based in the United States

Name: Global business process outsourcing firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,797 companies tracked

RevenueBase identified 2,797 global business process outsourcing firms headquartered in the United States as of September 2026 and tracks 305,334 professional contacts across them, including 42,737 with verified work emails. New York is the largest hub.

This list covers global business process outsourcing firms headquartered in the United States, 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.

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

2,797Companies

305,334Contacts tracked

42,737Verified emails

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The 25 largest global business process outsourcing firms based in the United States

Ranked by team size

Top 25 of 2,797 global business process outsourcing firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to global business process outsourcing 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	WNS	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	10001+	46,488 contacts →
	Partial evidence “WNS, part of Capgemini, is a global Agentic AI-powered intelligent operations and transformation company.” Source: RevenueBase Database · checked Sep 28, 2026
2	TTEC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	10001+	26,420 contacts →
	Indirect evidence “We’re TTEC (pronounced t.tec).” Source: RevenueBase Database · checked Sep 28, 2026
3	HGS	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	10001+	24,115 contacts →
	Partial evidence “HGS is a global provider of technology, AI, and business services, helping organizations transform with confidence.” Source: RevenueBase Database · checked Sep 28, 2026
4	IBEX	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	10001+	15,457 contacts →
	Strong evidence “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Source: RevenueBase Database · checked Sep 28, 2026
5	VXI Global Solutions	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	10001+	14,238 contacts →
	Partial evidence “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Source: RevenueBase Database · checked Sep 28, 2026
6	HTC Global Services	Strong evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	10001+	8,866 contacts →
	Strong evidence “HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
7	Atos Syntel	Strong evidence	Troy, MI, United StatesHQ checked Sep 28, 2026	10001+	7,339 contacts →
	Strong evidence “Atos\|Syntel is a leading global provider of integrated information technology and knowledge process services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Lancesoft, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,877 contacts →
	Partial evidence “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Source: RevenueBase Database · checked Sep 28, 2026
9	CGS Computer Generated Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	5,001-10,000	4,608 contacts →
	Partial evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 28, 2026
10	PSG Global Solutions	Strong evidence	Marina Del Rey, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,000 contacts →
	Strong evidence “PSG is a global leader in recruitment process optimization, delivering high-performance outsourced recruiting solutions that drive real business results.” Source: RevenueBase Database · checked Sep 28, 2026
11	Integreon	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,678 contacts →
	Indirect evidence “Integreon is a trusted provider of legal, creative and business outsourced services to corporations and law firms worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
12	Ubiquity	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	3,396 contacts →
	Indirect evidence “Recognized as the #1 CX provider for disruptors and innovators across financial services, healthcare, and e-commerce, Ubiquity was founded on the belief that our clients and their…” Source: RevenueBase Database · checked Sep 28, 2026
13	Williams LEA	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	3,253 contacts →
	Strong evidence “Williams Lea is the leading global provider of tech-enabled business and marketing services helping clients manage and transform processes through resilient, scalable 24/7…” Source: RevenueBase Database · checked Sep 28, 2026
14	Datamatics Business Solutions	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,000 contacts →
	Strong evidence “Datamatics Business Solutions is a global Business Process Management (BPM) company delivering technology-led and AI-enabled solutions that help organizations improve efficiency…” Source: RevenueBase Database · checked Sep 28, 2026
15	Advanced Call Center Technologies, LLC	Indirect evidence	Berwyn, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,774 contacts →
	Indirect evidence “Advanced Call Center Technologies, LLC (ACT) is a premier provider of domestic (USA), near shore and far shore outsourced call center services to the financial services, mortgage…” Source: RevenueBase Database · checked Sep 28, 2026
16	Stream Global Services	Strong evidence	Eagan, MN, United StatesHQ checked Sep 28, 2026	10001+	2,772 contacts →
	Strong evidence “Stream Global Services is a premium business process outsource (BPO) service provider specializing in customer relationship management solutions including sales, customer care…” Source: RevenueBase Database · checked Sep 28, 2026
17	Flatworld Solutions	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,494 contacts →
	Indirect evidence “Flatworld Solutions is a diversified BPO and Technology services company with customers across 100+ countries.” Source: RevenueBase Database · checked Sep 28, 2026
18	Enshored	Indirect evidence	Signal Hill, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,247 contacts →
	Indirect evidence “Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Source: RevenueBase Database · checked Sep 28, 2026
19	Alta Resources	Indirect evidence	Neenah, WI, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,046 contacts →
	Indirect evidence “Alta Resources has always worked to be something different.” Source: RevenueBase Database · checked Sep 28, 2026
20	SLK Global Solutions	Partial evidence	TX, United StatesHQ checked Sep 28, 2026	10001+	1,743 contacts →
	Partial evidence “Coforge Business Process Solutions (or Coforge BPS) offers digital platforms and solutions to multiple industries, including the financial services industry.” Source: RevenueBase Database · checked Sep 28, 2026
21	Km2 Solutions	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,741 contacts →
	Partial evidence “Award-winning outsourcing partner with two decades of experience operating an exclusively nearshore strategy that delivers better performance, close to home, and at a lower cost.” Source: RevenueBase Database · checked Sep 28, 2026
22	Supportninja	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,711 contacts →
	Indirect evidence “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: RevenueBase Database · checked Sep 28, 2026
23	Support Services Group	Indirect evidence	Waco, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,710 contacts →
	Indirect evidence “Support Services Group (SSG) helps businesses accelerate growth and earn customers for life through high-touch, outsourced engagement center services.” Source: RevenueBase Database · checked Sep 28, 2026
24	E-Solutions	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,669 contacts →
	Indirect evidence “Empowering Technology Services” Founded in 2003, we are in our 22th year of structured growth.” Source: RevenueBase Database · checked Sep 28, 2026
25	RDI Corporation	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,484 contacts →
	Indirect evidence “At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” 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: global business process outsourcing 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 global business process outsourcing firms.
Partial evidence: Its own public description names part of global business process outsourcing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name global business process outsourcing 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 2,797 global business process outsourcing firms based in the United States

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Global business process outsourcing firms based in the United States at a glance

As of Sep 28, 2026

14.0%Verified-email coverage

109.2Average contacts per company

11-50Median size (employees)

5.0%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

636

11-50

925

51-200

691

201-500

272

501-1,000

116

1,001-5,000

115

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,797 companies.

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 global business process outsourcing 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “global business process outsourcing 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 global business process outsourcing 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 global business process outsourcing firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 42,737 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.

Global business process outsourcing firms by metro

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 global business process outsourcing 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 global business process outsourcing firms are there based in the United States?

RevenueBase identified 2,797 global business process outsourcing firms headquartered in the United States 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?

WNS, headquartered in New York, tops this list with the largest team on record.

Which city has the most global business process outsourcing firms?

New York leads with 141 headquartered companies, followed by Houston (71) and Sheridan (71).

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 42,737 verified decision-maker contacts tracked across these 2,797 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.