Company lists · Data refreshed September 2026
Top 25 Professional services outsourcing firms based in the United States
RevenueBase identified 1,602 company matches for professional services outsourcing firms associated with the United States as of September 2026 and tracks 41,076 professional contacts across them, including 8,690 with verified work emails. New York is the largest hub.
This list covers company matches for professional services outsourcing firms associated with the United States, 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.
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.
The 25 largest professional services outsourcing firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,678 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 2,247 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 1,688 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 1,237 contacts → | ||||
Exact match “SEBPO transforms operational complexity into a seamless, strategic advantage.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 870 contacts → | ||||
Exact match “Cogneesol is a global professional services firm offering comprehensive bespoke and ready-to-deploy business process management solutions to help businesses optimize, innovate and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 658 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 571 contacts → | ||||
Exact match “Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 553 contacts → | ||||
Exact match “Global Strategic is a business process outsourcing partner that builds high-performing teams through custom onshore, nearshore, and offshore solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 544 contacts → | ||||
Exact match “Premier is a leading provider of tailored, knowledge process outsourcing solutions to enhance business outcomes for diverse industries, including financial services, healthcare…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 481 contacts → | ||||
Exact match “Delivering Contingent Staffing, Specialized Consulting, and Managed Project Services (MSP, FSP, FSO) for Engineering, IT, and Lifescience enterprises.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 447 contacts → | ||||
Exact match “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 416 contacts → | ||||
Exact match “Founded in 1985, OKS Group provides customized BPO and LPO services to some of the world's largest and most demanding companies.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 415 contacts → | ||||
Exact match “The Functionary helps companies scale operations around the reality of their business, not a standard model.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 403 contacts → | ||||
Exact match “Global Agility Solutions offers comprehensive onshore, offshore and hybrid Business Process Outsourcing (BPO) services and solutions focused on automating and advancing repeatable…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 397 contacts → | ||||
Exact match “Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 342 contacts → | ||||
Exact match “EDS service solutions is the number one outsourcing solution for Fortune 500 companies throughout the US.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 320 contacts → | ||||
Exact match “Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 297 contacts → | ||||
Exact match “CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 275 contacts → | ||||
Exact match “Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 274 contacts → | ||||
Exact match “M Squared Consulting has now fully integrated into our parent company, SolomonEdwards, uniting us as one national professional services firm and brand.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 254 contacts → | ||||
Exact match “Magnus Technology Solutions, is a leading services firm that provides a portfolio of consulting, outsourcing and staffing services to a broad range of clients.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 252 contacts → | ||||
Exact match “SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 249 contacts → | ||||
Exact match “Knowledge process outsourcing Company located at Mumbai, India Areas supported Data entry Research Bookeeping web Design Internet marketing SEO Alfa makes life better for…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 237 contacts → | ||||
Exact match “Staff Boom specializes in customized staffing solutions and consulting for small and medium sized businesses to save money and resources, improve how they work and prevent…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 231 contacts → | ||||
Exact match “GreenPoint specializes in providing value-added professional services to a broad base of and other companies worldwide.” 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 “professional services outsourcing firms”. 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 1,602 professional services outsourcing firms based in the United States
See the full list, filter by size, metro and specialty, and access 8,690 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Professional services outsourcing firms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 1,602 companies.
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.
- What qualifies
- Company records associated with the United States 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 8,690 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.
Professional services outsourcing firms by metro
- Professional services outsourcing firms in New York85
- Professional services outsourcing firms in Chicago35
- Professional services outsourcing firms in Dallas35
- Professional services outsourcing firms in Houston35
- Professional services outsourcing firms in Atlanta31
- Professional services outsourcing firms in Austin25
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 based in the United States?
RevenueBase identified 1,602 company matches for professional services outsourcing firms associated with the United States 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?
Integreon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most professional services outsourcing firms?
New York leads with 85 company records, followed by Chicago (35) and Dallas (35).
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 8,690 professional contacts with verified work emails tracked across these 1,602 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.
Ready to reach these companies? Verified emails and direct dials for all 1,602 professional services outsourcing firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Professional services outsourcing firms by geography
- Professional services outsourcing firms based in Buenos Aires, Argentina
- Professional services outsourcing firms based in Melbourne, Australia
- Professional services outsourcing firms based in Sydney, Australia
- Professional services outsourcing firms based in Barueri, Brazil
- Professional services outsourcing firms based in Belo Horizonte, Brazil
- Professional services outsourcing firms based in Campinas, Brazil
- Professional services outsourcing firms based in Porto Alegre, Brazil
- Professional services outsourcing firms based in Rio De Janeiro, Brazil
- Professional services outsourcing firms based in Sao Paulo, Brazil
- Professional services outsourcing firms based in Toronto, Canada
- Professional services outsourcing firms based in Santiago, Chile
- Professional services outsourcing firms based in Paris, France
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Professional services outsourcing firms based in Buenos Aires, Argentina
- Professional services outsourcing firms based in Melbourne, Australia
- Professional services outsourcing firms based in Sydney, Australia
- Professional services outsourcing firms based in Barueri, Brazil
- Professional services outsourcing firms based in Belo Horizonte, Brazil
- Professional services outsourcing firms based in Campinas, Brazil
Company intelligence · public preview
Top 25 professional services outsourcing firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,602 matching company records for professional services outsourcing firms based in the United States, with 41,076 tracked contacts and 8,690 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 professional services outsourcing firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Integreonintegreon.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 3,678 contacts → |
“Integreon is a trusted provider of legal, creative and business outsourced services to corporations and law firms worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Enshoredenshored.comHQ: Signal Hill, CA, United StatesReported employees: 1,001-5,000 | Signal Hill, CA, United States | 1,001-5,000 | Exact match | 2,247 contacts → |
“Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Sikichsikich.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,688 contacts → |
“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  SEBPOsebpo.comHQ: Marlton, NJ, United StatesReported employees: 1,001-5,000 | Marlton, NJ, United States | 1,001-5,000 | Exact match | 1,237 contacts → |
“SEBPO transforms operational complexity into a seamless, strategic advantage.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Cogneesolcogneesol.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 870 contacts → |
“Cogneesol is a global professional services firm offering comprehensive bespoke and ready-to-deploy business process management solutions to help businesses optimize, innovate and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Not Availablefso-outsourcing.comHQ: Na, United StatesReported employees: Not recorded | Na, United States | Not recorded | Exact match | 658 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 |  Metriqe Solutionsmetriqe.comHQ: Irving, TX, United StatesReported employees: 201-500 | Irving, TX, United States | 201-500 | Exact match | 571 contacts → |
“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Global Strategic Business Process Solutionsglobalstrategic.comHQ: Burlington, NC, United StatesReported employees: 1,001-5,000 | Burlington, NC, United States | 1,001-5,000 | Exact match | 553 contacts → |
“Global Strategic is a business process outsourcing partner that builds high-performing teams through custom onshore, nearshore, and offshore solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Premier NXpremiernx.comHQ: New Providence, NJ, United StatesReported employees: 1,001-5,000 | New Providence, NJ, United States | 1,001-5,000 | Exact match | 544 contacts → |
“Premier is a leading provider of tailored, knowledge process outsourcing solutions to enhance business outcomes for diverse industries, including financial services, healthcare…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Black Diamond Networksblackdiamondnet.comHQ: Andover, MA, United StatesReported employees: 51-200 | Andover, MA, United States | 51-200 | Exact match | 481 contacts → |
“Delivering Contingent Staffing, Specialized Consulting, and Managed Project Services (MSP, FSP, FSO) for Engineering, IT, and Lifescience enterprises.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Velan Info Servicesvelaninfo.comHQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 447 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  OKS Groupoksgroup.comHQ: Bala Cynwyd, PA, United StatesReported employees: 1,001-5,000 | Bala Cynwyd, PA, United States | 1,001-5,000 | Exact match | 416 contacts → |
“Founded in 1985, OKS Group provides customized BPO and LPO services to some of the world's largest and most demanding companies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  The Functionarythefunctionary.comHQ: Aubrey, TX, United StatesReported employees: 1,001-5,000 | Aubrey, TX, United States | 1,001-5,000 | Exact match | 415 contacts → |
“The Functionary helps companies scale operations around the reality of their business, not a standard model.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Global Agility Solutionsglobalagilitysolutions.comHQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 403 contacts → |
“Global Agility Solutions offers comprehensive onshore, offshore and hybrid Business Process Outsourcing (BPO) services and solutions focused on automating and advancing repeatable…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Outsource Partners International Alumniopiglobal.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 397 contacts → |
“Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  EDS Service Solutionsedsservicesolutions.comHQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 342 contacts → |
“EDS service solutions is the number one outsourcing solution for Fortune 500 companies throughout the US.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Unison Globusunisonglobus.comHQ: Coral Springs, FL, United StatesReported employees: 201-500 | Coral Springs, FL, United States | 201-500 | Exact match | 320 contacts → |
“Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Cognetcognethro.comHQ: Orlando, FL, United StatesReported employees: 501-1,000 | Orlando, FL, United States | 501-1,000 | Exact match | 297 contacts → |
“CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Managed Labor Solutionsmanagedlabor.netHQ: Allentown, PA, United StatesReported employees: 1,001-5,000 | Allentown, PA, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  M Squared Consultingsolomonedwards.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 274 contacts → |
“M Squared Consulting has now fully integrated into our parent company, SolomonEdwards, uniting us as one national professional services firm and brand.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Magnus Technology Solutionsmagnustechnol.comHQ: Hayward, CA, United StatesReported employees: Not recorded | Hayward, CA, United States | Not recorded | Exact match | 254 contacts → |
“Magnus Technology Solutions, is a leading services firm that provides a portfolio of consulting, outsourcing and staffing services to a broad range of clients.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  SAPROsapro.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 252 contacts → |
“SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Alfa Overseas, Mumbaialfaoverseas.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 249 contacts → |
“Knowledge process outsourcing Company located at Mumbai, India Areas supported Data entry Research Bookeeping web Design Internet marketing SEO Alfa makes life better for…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Staff Boomstaffboom.comHQ: Anaheim, CA, United StatesReported employees: 1,001-5,000 | Anaheim, CA, United States | 1,001-5,000 | Exact match | 237 contacts → |
“Staff Boom specializes in customized staffing solutions and consulting for small and medium sized businesses to save money and resources, improve how they work and prevent…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Greenpoint Globalgreenpointglobal.com HQ: Rye, NY, United StatesReported employees: 501-1,000 | Rye, NY, United States | 501-1,000 | Exact match | 231 contacts → |
“GreenPoint specializes in providing value-added professional services to a broad base of and other companies worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,602 company matches
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Professional services outsourcing firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,600 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,602 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Professional services outsourcing firms by metro
- Professional services outsourcing firms in New York85
- Professional services outsourcing firms in Chicago35
- Professional services outsourcing firms in Dallas35
- Professional services outsourcing firms in Houston35
- Professional services outsourcing firms in Atlanta31
- Professional services outsourcing firms in Austin25
Questions about this company list
What does Exact match mean for professional services outsourcing firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many professional services outsourcing firms did RevenueBase find based in the United States?
The saved snapshot records 1,602 matching company records, 41,076 tracked contacts and 8,690 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Professional services outsourcing firms by geography
- Professional services outsourcing firms based in Buenos Aires, Argentina
- Professional services outsourcing firms based in Melbourne, Australia
- Professional services outsourcing firms based in Sydney, Australia
- Professional services outsourcing firms based in Barueri, Brazil
- Professional services outsourcing firms based in Belo Horizonte, Brazil
- Professional services outsourcing firms based in Campinas, Brazil
- Professional services outsourcing firms based in Porto Alegre, Brazil
- Professional services outsourcing firms based in Rio De Janeiro, Brazil
- Professional services outsourcing firms based in Sao Paulo, Brazil
- Professional services outsourcing firms based in Toronto, Canada
- Professional services outsourcing firms based in Santiago, Chile
- Professional services outsourcing firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 professional services outsourcing firms based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/professional-services-outsourcing-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Professional services outsourcing firms based in Buenos Aires, Argentina
- Professional services outsourcing firms based in Melbourne, Australia
- Professional services outsourcing firms based in Sydney, Australia
- Professional services outsourcing firms based in Barueri, Brazil
- Professional services outsourcing firms based in Belo Horizonte, Brazil
- Professional services outsourcing firms based in Campinas, Brazil
Company intelligence · public preview
Top 25 professional services outsourcing firms based in the United States
RevenueBase records 1,602 matching company records for professional services outsourcing firms based in the United States, with 41,076 tracked contacts and 8,690 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 29, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 professional services outsourcing firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Integreonintegreon.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 3,678 contacts → |
“Integreon is a trusted provider of legal, creative and business outsourced services to corporations and law firms worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Enshoredenshored.com HQ: Signal Hill, CA, United StatesReported employees: 1,001-5,000 | Signal Hill, CA, United States | 1,001-5,000 | Exact match | 2,247 contacts → |
“Enshored powers the growth of ambitious high growth companies by delivering and managing teams of elite outsourcers.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sikichsikich.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,688 contacts → |
“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | SEBPOsebpo.com HQ: Marlton, NJ, United StatesReported employees: 1,001-5,000 | Marlton, NJ, United States | 1,001-5,000 | Exact match | 1,237 contacts → |
“SEBPO transforms operational complexity into a seamless, strategic advantage.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cogneesolcogneesol.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 870 contacts → |
“Cogneesol is a global professional services firm offering comprehensive bespoke and ready-to-deploy business process management solutions to help businesses optimize, innovate and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Not Availablefso-outsourcing.com HQ: Na, United StatesReported employees: Not recorded | Na, United States | Not recorded | Exact match | 658 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | Metriqe Solutionsmetriqe.com HQ: Irving, TX, United StatesReported employees: 201-500 | Irving, TX, United States | 201-500 | Exact match | 571 contacts → |
“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Global Strategic Business Process Solutionsglobalstrategic.com HQ: Burlington, NC, United StatesReported employees: 1,001-5,000 | Burlington, NC, United States | 1,001-5,000 | Exact match | 553 contacts → |
“Global Strategic is a business process outsourcing partner that builds high-performing teams through custom onshore, nearshore, and offshore solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Premier NXpremiernx.com HQ: New Providence, NJ, United StatesReported employees: 1,001-5,000 | New Providence, NJ, United States | 1,001-5,000 | Exact match | 544 contacts → |
“Premier is a leading provider of tailored, knowledge process outsourcing solutions to enhance business outcomes for diverse industries, including financial services, healthcare…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Black Diamond Networksblackdiamondnet.com HQ: Andover, MA, United StatesReported employees: 51-200 | Andover, MA, United States | 51-200 | Exact match | 481 contacts → |
“Delivering Contingent Staffing, Specialized Consulting, and Managed Project Services (MSP, FSP, FSO) for Engineering, IT, and Lifescience enterprises.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Velan Info Servicesvelaninfo.com HQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 447 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | OKS Groupoksgroup.com HQ: Bala Cynwyd, PA, United StatesReported employees: 1,001-5,000 | Bala Cynwyd, PA, United States | 1,001-5,000 | Exact match | 416 contacts → |
“Founded in 1985, OKS Group provides customized BPO and LPO services to some of the world's largest and most demanding companies.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | The Functionarythefunctionary.com HQ: Aubrey, TX, United StatesReported employees: 1,001-5,000 | Aubrey, TX, United States | 1,001-5,000 | Exact match | 415 contacts → |
“The Functionary helps companies scale operations around the reality of their business, not a standard model.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Global Agility Solutionsglobalagilitysolutions.com HQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 403 contacts → |
“Global Agility Solutions offers comprehensive onshore, offshore and hybrid Business Process Outsourcing (BPO) services and solutions focused on automating and advancing repeatable…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Outsource Partners International Alumniopiglobal.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 397 contacts → |
“Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | EDS Service Solutionsedsservicesolutions.com HQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 342 contacts → |
“EDS service solutions is the number one outsourcing solution for Fortune 500 companies throughout the US.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Unison Globusunisonglobus.com HQ: Coral Springs, FL, United StatesReported employees: 201-500 | Coral Springs, FL, United States | 201-500 | Exact match | 320 contacts → |
“Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Cognetcognethro.com HQ: Orlando, FL, United StatesReported employees: 501-1,000 | Orlando, FL, United States | 501-1,000 | Exact match | 297 contacts → |
“CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Managed Labor Solutionsmanagedlabor.net HQ: Allentown, PA, United StatesReported employees: 1,001-5,000 | Allentown, PA, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | M Squared Consultingsolomonedwards.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 274 contacts → |
“M Squared Consulting has now fully integrated into our parent company, SolomonEdwards, uniting us as one national professional services firm and brand.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Magnus Technology Solutionsmagnustechnol.com HQ: Hayward, CA, United StatesReported employees: Not recorded | Hayward, CA, United States | Not recorded | Exact match | 254 contacts → |
“Magnus Technology Solutions, is a leading services firm that provides a portfolio of consulting, outsourcing and staffing services to a broad range of clients.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | SAPROsapro.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 252 contacts → |
“SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Alfa Overseas, Mumbaialfaoverseas.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 249 contacts → |
“Knowledge process outsourcing Company located at Mumbai, India Areas supported Data entry Research Bookeeping web Design Internet marketing SEO Alfa makes life better for…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Staff Boomstaffboom.com HQ: Anaheim, CA, United StatesReported employees: 1,001-5,000 | Anaheim, CA, United States | 1,001-5,000 | Exact match | 237 contacts → |
“Staff Boom specializes in customized staffing solutions and consulting for small and medium sized businesses to save money and resources, improve how they work and prevent…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Greenpoint Globalgreenpointglobal.com HQ: Rye, NY, United StatesReported employees: 501-1,000 | Rye, NY, United States | 501-1,000 | Exact match | 231 contacts → |
“GreenPoint specializes in providing value-added professional services to a broad base of and other companies worldwide.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,602 company matches
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Professional services outsourcing firms: dataset insights
September 29, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,600 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,602 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 29, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Professional services outsourcing firms by metro
- Professional services outsourcing firms in New York85
- Professional services outsourcing firms in Chicago35
- Professional services outsourcing firms in Dallas35
- Professional services outsourcing firms in Houston35
- Professional services outsourcing firms in Atlanta31
- Professional services outsourcing firms in Austin25
Questions about this company list
What does Exact match mean for professional services outsourcing firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many professional services outsourcing firms did RevenueBase find based in the United States?
The saved snapshot records 1,602 matching company records, 41,076 tracked contacts and 8,690 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 29, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Professional services outsourcing firms by geography
- Professional services outsourcing firms based in Buenos Aires, Argentina
- Professional services outsourcing firms based in Melbourne, Australia
- Professional services outsourcing firms based in Sydney, Australia
- Professional services outsourcing firms based in Barueri, Brazil
- Professional services outsourcing firms based in Belo Horizonte, Brazil
- Professional services outsourcing firms based in Campinas, Brazil
- Professional services outsourcing firms based in Porto Alegre, Brazil
- Professional services outsourcing firms based in Rio De Janeiro, Brazil
- Professional services outsourcing firms based in Sao Paulo, Brazil
- Professional services outsourcing firms based in Toronto, Canada
- Professional services outsourcing firms based in Santiago, Chile
- Professional services outsourcing firms based in Paris, France
Cite this list
RevenueBase Data Team. Top 25 professional services outsourcing firms based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/professional-services-outsourcing-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Professional services outsourcing firms based in Buenos Aires, Argentina
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- Professional services outsourcing firms based in Campinas, Brazil