Company lists · Data refreshed September 2026
Top 25 IT professional services companies based in San Francisco, United States
RevenueBase identified 158 IT professional services companies headquartered in San Francisco, United States as of September 2026 and tracks 2,322 professional contacts across them, including 529 with verified work emails. Across the United States, New York is the largest hub for this category (583 companies); San Francisco has 158.
This list covers IT professional services companies headquartered in San Francisco, 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 27, 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.
The 25 largest IT professional services companies based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 274 contacts → | ||||
Partial evidence “M Squared Consulting has now fully integrated into our parent company, SolomonEdwards, uniting us as one national professional services firm and brand.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 210 contacts → | ||||
Indirect evidence “We’re Cyclotron.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 199 contacts → | ||||
Indirect evidence “With globalization making rapid changes across industries and consumers becoming ever so demanding, organizations need to quickly take account of their limited resources and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 165 contacts → | ||||
Indirect evidence “Prometteur Solutions provides technology-empowered business solutions for world-class organizations in the enterprise, federal, state and local government, and education markets.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 164 contacts → | ||||
Indirect evidence “LATERAL (Technology with Passion) adds business value through full service technology solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 116 contacts → | ||||
Partial evidence “Blackstone Technology Group is a privately-held, global IT services and solutions firm founded in 1998.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 113 contacts → | ||||
Indirect evidence “Atom is a leading modern technology services company providing the most innovative cloud and digital transformation solutions, with carefully curated “living” services across…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 47 contacts → | ||||
Indirect evidence “Formed by stalwarts in business and technology services, SpiceOrb wants to be your first choice of partner to realize your organization' strategic and tactical goals.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 27 contacts → | ||||
Indirect evidence “Business survival today is dependent upon instant delivery of targeted information to all facets of the organization.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 27 contacts → | ||||
Partial evidence “TMC Software has been providing expert IT consulting services and staffing since 1995.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 25 contacts → | ||||
Partial evidence “AEC firms build great things, but too often, IT disruptions slow progress, cause missed deadlines, and drain team productivity.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 19 contacts → | ||||
Indirect evidence “The Dignify Solutions with Global Capabilities and Local Excellence – has combined experience of 30 +years in Client Services/ Engagement/ Relationship/ Partnership, Sales/…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 19 contacts → | ||||
Partial evidence “Our team of experts provides daily managed IT support solutions and IT Consulting that is personalized to our small to medium-sized business clients in the San Francisco Bay Area.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 contacts → | ||||
Indirect evidence “HireIn Solutions is a growing staffing and recruiting company headquartered in California, USA.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Partial evidence “boxIT has been providing reliable and cost-effective IT services to businesses through automation, 24/7 management, and a data-driven yet human approach since 2001.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Indirect evidence “GroupA is an Enterprise Cloud Services firm working with PE sponsors, portfolio companies, and complex enterprise environments across North America.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 16 contacts → | ||||
Indirect evidence “The Ignition team delivers the friendliest dang tech support your business has ever seen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Indirect evidence “Bay Computing Group is the best choice for reliable technology solutions and first-class support.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “DHAP Digital, Inc.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 12 contacts → | ||||
Indirect evidence “Blackstone Studio works with companies where software underpins revenue, operations, and critical workflows.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 11 contacts → | ||||
Partial evidence “Founded in San Francisco in 2001, Ventura Tech delivers managed IT services, cybersecurity, and hands-on IT support for Bay Area businesses of all sizes.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 contacts → | ||||
Partial evidence “BEAR Cloud supports our customers in transforming their business operations into a secure, cost effective and supportable IT environment.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “TransformITive is an MXP – Managed Transformation Provider helping MSPs Press PLAY to accelerate their client’s AI journey and start jamming to what they love.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Partial evidence “TechInSF: The Bay Area's Award-Winning IT and Digital Solutions Provider.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Indirect evidence “SFDATA is a systems, data management and software development consultancy grounded in long-term client-partnerships.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
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: IT professional services 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 IT professional services companies.
- Partial evidence
- Its own public description names part of IT professional services companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT professional services 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 158 IT professional services companies based in San Francisco, United States
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IT professional services companies based in San Francisco, United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 158 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 IT professional services 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.
- What qualifies
- Companies headquartered in San Francisco, United States whose own description of what they do matches “IT professional services 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 IT professional services 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 IT professional services companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 529 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 27, 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.
IT professional services companies by metro in the United States
- IT professional services companies in New York583
- IT professional services companies in Houston455
- IT professional services companies in Dallas343
- IT professional services companies in Atlanta311
- IT professional services companies in Austin299
- IT professional services companies in Chicago292
- IT professional services companies in Miami226
- IT professional services companies in Irving216
- IT professional services companies in Los Angeles195
- IT professional services companies in Plano175
- IT professional services companies in Washington161
- IT professional services companies in Frisco156
- IT professional services companies in Tampa153
- IT professional services companies in Charlotte151
- IT professional services companies in San Diego142
- IT professional services companies in Alpharetta137
- IT professional services companies in Irvine135
- IT professional services companies in Sheridan133
- IT professional services companies in Denver125
- IT professional services companies in Seattle125
- IT professional services companies in Phoenix119
- IT professional services companies in Orlando117
- IT professional services companies in Boston114
- IT professional services companies in San Jose110
- IT professional services companies in Fremont109
- IT professional services companies in Herndon109
- IT professional services companies in Princeton107
- IT professional services companies in Wilmington103
- IT professional services companies in Las Vegas98
- IT professional services companies in Minneapolis94
- IT professional services companies in Columbus91
- IT professional services companies in Edison89
- IT professional services companies in Reston89
- IT professional services companies in Indianapolis86
- IT professional services companies in San Antonio84
- IT professional services companies in Newark81
- IT professional services companies in Ashburn78
- IT professional services companies in Columbia78
- IT professional services companies in Arlington74
- IT professional services companies in Dover73
- IT professional services companies in Naperville72
- IT professional services companies in Sacramento71
- IT professional services companies in Jacksonville70
- IT professional services companies in Portland70
- IT professional services companies in Fairfax68
- IT professional services companies in Santa Clara68
- IT professional services companies in Pittsburgh66
- IT professional services companies in Richmond62
- IT professional services companies in Cincinnati60
- IT professional services companies in Scottsdale59
- IT professional services companies in Piscataway58
- IT professional services companies in Philadelphia57
- IT professional services companies in Raleigh57
- IT professional services companies in Mckinney56
- IT professional services companies in Mclean56
- IT professional services companies in Schaumburg56
- IT professional services companies in Chantilly55
- IT professional services companies in Overland Park55
- IT professional services companies in Rockville55
- IT professional services companies in Bellevue54
- IT professional services companies in Katy54
- IT professional services companies in Springfield52
- IT professional services companies in Troy52
- IT professional services companies in Cary51
- IT professional services companies in Fort Lauderdale51
- IT professional services companies in Sterling51
- IT professional services companies in Baltimore50
- IT professional services companies in Fort Worth49
- IT professional services companies in Nashville49
- IT professional services companies in Iselin48
- IT professional services companies in Jersey City48
- IT professional services companies in Louisville48
- IT professional services companies in Alexandria47
- IT professional services companies in Cumming45
- IT professional services companies in Aurora44
- IT professional services companies in Boca Raton44
- IT professional services companies in Richardson44
- IT professional services companies in Birmingham43
- IT professional services companies in Pleasanton41
- IT professional services companies in Vienna41
- IT professional services companies in Dublin39
- IT professional services companies in Sunnyvale39
- IT professional services companies in Madison38
- IT professional services companies in Omaha38
- IT professional services companies in Colorado Springs37
- IT professional services companies in Greenville37
- IT professional services companies in South Plainfield37
- IT professional services companies in Grand Rapids36
- IT professional services companies in Oklahoma City36
- IT professional services companies in San Ramon35
- IT professional services companies in Sugar Land35
- IT professional services companies in Cleveland34
- IT professional services companies in Kansas City33
- IT professional services companies in Bethesda32
- IT professional services companies in Chandler32
- IT professional services companies in Farmington Hills32
- IT professional services companies in Gaithersburg32
- IT professional services companies in Lexington32
- IT professional services companies in Rochester32
- IT professional services companies in Tucson32
- IT professional services companies in Salt Lake City31
- IT professional services companies in West Palm Beach31
- IT professional services companies in Dayton30
- IT professional services companies in Detroit30
- IT professional services companies in Glen Allen30
- IT professional services companies in Leesburg30
- IT professional services companies in Memphis30
- IT professional services companies in New York City30
- IT professional services companies in Somerset30
- IT professional services companies in Woodbridge30
- IT professional services companies in Albuquerque29
- IT professional services companies in Duluth29
- IT professional services companies in Folsom29
- IT professional services companies in Lewisville29
- IT professional services companies in Allen28
- IT professional services companies in Chesterfield28
- IT professional services companies in Glendale28
- IT professional services companies in St. Louis28
- IT professional services companies in Suwanee28
- IT professional services companies in Virginia Beach28
- IT professional services companies in Albany27
- IT professional services companies in Canton27
- IT professional services companies in Franklin27
- IT professional services companies in Middletown27
- IT professional services companies in Milwaukee27
- IT professional services companies in Parsippany27
- IT professional services companies in Roswell27
- IT professional services companies in Tallahassee27
- IT professional services companies in The Woodlands27
- IT professional services companies in Baton Rouge26
- IT professional services companies in Buffalo26
- IT professional services companies in Carrollton26
- IT professional services companies in Durham26
- IT professional services companies in Marietta26
- IT professional services companies in Plainsboro26
- IT professional services companies in Redmond26
- IT professional services companies in Ann Arbor25
- IT professional services companies in Doral25
- IT professional services companies in Germantown25
- IT professional services companies in Greensboro25
- IT professional services companies in Torrance25
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 IT professional services 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 IT professional services companies are there based in San Francisco, United States?
RevenueBase identified 158 IT professional services companies headquartered in San Francisco, 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?
M Squared Consulting, headquartered in San Francisco, tops this list with the largest team on record.
Which city in the United States has the most IT professional services companies?
New York leads the United States with 583 headquartered companies, followed by Houston (455) and Dallas (343). San Francisco has 158.
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 529 verified decision-maker contacts tracked across these 158 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 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 158 IT professional services companies based in San Francisco, United States. Start with a free account, no credit card.
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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.
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