Company lists · Data refreshed September 2026

Top 24 IT consulting services based in San Jose, United States

Name: IT consulting services based in San Jose, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 132 companies tracked

RevenueBase identified 132 IT consulting services headquartered in San Jose, United States as of September 2026 and tracks 3,064 professional contacts across them, including 549 with verified work emails. New York is the largest hub.

This list covers IT consulting services headquartered in San Jose, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

132Companies

3,064Contacts tracked

549Verified emails

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The 24 largest IT consulting services based in San Jose, United States

Ranked by team size

Top 24 of 132 IT consulting services based in San Jose, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT consulting services: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Cyber Infrastructure CISIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1,001-5,000	915
	“Think Big.” Source: company website · checked Sep 4, 2026
2	Nextgen Technologies INCPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	10001+	165
	“Nextgen Technologies takes pride in helping its customers to succeed through ever changing IT technology and business environment, delivering more time with standing solutions for…” Source: company website · checked Sep 4, 2026
3	ZAG Technical ServicesPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	51-200	99
	“ZAG Technical Services was founded in 1998 as a trusted IT adviser and partner to our clients.” Source: company website · checked Sep 4, 2026
4	Left Right MindIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	51-200	95
	“Left Right Mind is a set of people united by the passion to create unquestionable value.” Source: company website · checked Sep 4, 2026
5	Tranzeal IncorporatedIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	201-500	80
	“Tranzeal is an industry leading global Business Transformation Service Provider.” Source: company website · checked Sep 4, 2026
6	Walkwater TechnologiesIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	201-500	64
	“Our mission “is to help our customer reduce costs and increase efficiencies, while improving visibility into operations and increasing control of both internal and external…” Source: company website · checked Sep 4, 2026
7	OpalsoftIndirect evidence	San Jose, United StatesHQ checked Sep 4, 2026	51-200	63
	“Opal Soft is a professional services company focused in information technology.” Source: company website · checked Sep 4, 2026
8	ProgentStrong evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	51-200	59
	“National It Consulting - Onsite and Remote Support - Microsoft and Cisco Certified Experts - Windows, Linux, and Mac OS Technical Support - Network Security and Compliance - IT…” Source: company website · checked Sep 4, 2026
9	Up2date Technology Solution LLCPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	48
	“Up2date Technology Solutions LLC, develop informational technology (IT) Software and integrate with our client's business strategy, enabling them to achieve their business goals.” Source: company website · checked Sep 4, 2026
10	Advantel NetworksIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	51-200	47
	“Advantel Networks is a premier technology solutions provider; designing, implementing and maintaining solutions for customers worldwide.” Source: company website · checked Sep 4, 2026
11	Crest Data SystemsIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1,001-5,000	40
	“Crest Data Systems is a leading provider of custom solutions in the areas of Data Analytics, Cyber Security, ITOps/AIOps, DevOps, and Cloud based in the Bay Area, California.” Source: company website · checked Sep 4, 2026
12	TruadvantagePartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	33
	“TruAdvantage is a Bay Area-based, award-winning IT firm that specializes in managed IT, managed Cybersecurity, managed Compliance and Cloud solutions.” Source: company website · checked Sep 4, 2026
13	Stallion SIPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	22
	“About Stallion SI Technologies Delivery-first IT engineering for secure, scalable, real-world environments Stallion SI Technologies is a delivery-first IT professional services…” Source: company website · checked Sep 4, 2026
14	Beshton Software INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1-10	20
	“BESHTON SOFTWARE INC is an information technology and services company based out of 1362 OAK KNOLL DR, SAN JOSE, California, United States.” Source: company website · checked Sep 4, 2026
15	NevtecStrong evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	17
	“Nevtec provides IT Managed & Consulting Services for small to medium sized businesses.” Source: company website · checked Sep 4, 2026
16	Apogee Global RMSIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1-10	17
	“Apogee Global RMS is a U.S.” Source: company website · checked Sep 4, 2026
17	Axcelerate Networks INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	16
	Source: company website · checked Sep 4, 2026
18	Accend NetworksStrong evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	16
	“WHO WE ARE An IT Network Consulting company specializing in network security, network design, implementation and support for Data, Wireless, and Voice networks.” Source: company website · checked Sep 4, 2026
19	SjultraPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1-10	15
	“SJULTRA is a Cloud Security Consulting firm based in California.” Source: company website · checked Sep 4, 2026
20	Aptivar INCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	51-200	15
	“Aptivar is a professionally managed company in the arena of digital transformation, digital strategy and marketing services.” Source: company website · checked Sep 4, 2026
21	Ideavat LLCIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	11
	“ideaVat uses & implements ideas to innovate, build, grow.” Source: company website · checked Sep 4, 2026
22	Creative Strategies, INCIndirect evidence	San Jose, United StatesHQ checked Sep 4, 2026	11-50	8
	“Creative Strategies is a name leading technology companies have trusted for three decades.” Source: company website · checked Sep 4, 2026
23	PeakitPartial evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	1-10	8
	“We are a US-owned IT solutions provider focused on delivering cutting-edge services to SMBs and large enterprises.” Source: company website · checked Sep 4, 2026
24	KaliotekIndirect evidence	San Jose, CA, United StatesHQ checked Sep 4, 2026	11-50	8
	“KalioTek™ was founded by high tech industry survivors who have now worked together with emerging and midsize companies for over 20 years.” Source: company website · checked Sep 4, 2026

Showing 24 of 132 IT consulting services based in San Jose, United States

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IT consulting services based in San Jose, United States at a glance

As of Sep 4, 2026

11-50Median size (employees)

New YorkLargest hub · 976 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for San Jose, over 132 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 consulting services, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in San Jose, United States whose own description of what they do matches “IT consulting services”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT consulting services, and records with no verified work email. Companies headquartered outside San Jose 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 an evidence 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, 549 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 4, 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 consulting services by metro in the United States

Frequently asked

How many IT consulting services are there based in San Jose, United States?

RevenueBase identified 132 IT consulting services headquartered in San Jose, 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?

Cyber Infrastructure CIS, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most IT consulting services?

New York leads with 976 headquartered companies, followed by Houston (633) and Atlanta (521).

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 549 verified decision-maker contacts tracked across these 132 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 4, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.