Company lists · Data refreshed September 2026

Top 18 IT infrastructure consulting firms based in Oakland, United States

Name: IT infrastructure consulting firms based in Oakland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 33 companies tracked

RevenueBase identified 33 IT infrastructure consulting firms headquartered in Oakland, United States as of September 2026 and tracks 249 professional contacts across them, including 108 with verified work emails. New York is the largest hub.

This list covers IT infrastructure consulting firms headquartered in Oakland, 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

33Companies

249Contacts tracked

108Verified emails

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The 18 largest IT infrastructure consulting firms based in Oakland, United States

Ranked by team size

Top 18 of 33 IT infrastructure consulting firms based in Oakland, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT infrastructure consulting firms: 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	21techPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	11-50	67
	“21Tech LLC is a consulting firm providing business and technology solutions to both private and public interests.” Source: company website · checked Sep 4, 2026
2	Acumen Building Enterprise, INCPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	11-50	26
	“Acumen Transit is a fast-growing professional consulting services provider renowned for our experienced consultants with “can-do” attitudes and innovative solutions.” Source: company website · checked Sep 4, 2026
3	Maine Technology GroupPartial evidence	Oakland, ME, United StatesHQ checked Sep 4, 2026	11-50	21
	“Maine Technology Group is a Managed IT Services provider committed to helping customers maximize technologies within their businesses, while minimizing unnecessary current…” Source: company website · checked Sep 4, 2026
4	CHUCOPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	11-50	15
	“We live and breath Tanium, and we have a track record that proves it.” Source: company website · checked Sep 4, 2026
5	Computer Business ConsultantsIndirect evidence	Oakland, FL, United StatesHQ checked Sep 4, 2026	11-50	11
	“Welcome to Computer Business Consultants!” Source: company website · checked Sep 4, 2026
6	Renascent TechnologyStrong evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	8
	“Renascent Technology is a boutique IT consulting and integration firm that aims to provide white glove service to its clients.” Source: company website · checked Sep 4, 2026
7	Sunpoint IT Solutions, LLCPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	6
	“We're SunPoint IT Solutions, an IT Consultancy designed to manage and support the IT side of your business from top to bottom.” Source: company website · checked Sep 4, 2026
8	Tech Plus Consulting LLCStrong evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	6
	“Tech+ Consulting provides Managed IT and Cybersecurity for Bay Area Small Businesses as well as Salesforce.com Implementation, Architecture, Training and Consulting.” Source: company website · checked Sep 4, 2026
9	InspiricaPartial evidence	Oakland, NJ, United StatesHQ checked Sep 4, 2026	11-50	4
	“Industry-Leading IT Services and Support for Northern NJ Businesses.” Source: company website · checked Sep 4, 2026
10	T5 Solutions Technology ServicesIndirect evidence	Oakland, United StatesHQ checked Sep 4, 2026	1-10	3
	“T5 Solutions is an African-American, woman-owned, LGBTQ owned technology managed services provider based in Oakland, California.” Source: company website · checked Sep 4, 2026
11	Office Information SystemsIndirect evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Office Information Systems is an innovative, networking technologies service firm based in Oakland, California.” Source: company website · checked Sep 4, 2026
12	Trust US TechnologiesStrong evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Trust Us Technologies is a cybersecurity and IT consulting firm located in Oakland, California.” Source: company website · checked Sep 4, 2026
13	REX Consulting, INCIndirect evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	Source: company website · checked Sep 4, 2026
14	Cross Ocean Technologies INCIndirect evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	3
	“Cross Ocean Technologies Inc is a company based out of 1901 Harrison St Ste 1100, Oakland, California, United States.” Source: company website · checked Sep 4, 2026
15	Haddon Hill Group, INCPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	11-50	1
	“HHG was founded in 2003 to address the need to link IT investment to business value in enterprises that rely on complex computer systems.” Source: company website · checked Sep 4, 2026
16	Link Level Consulting LLCPartial evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	1
	“Link Level Consulting provides engineering, project management, and strategic advice to the Internet Service industry.” Source: company website · checked Sep 4, 2026
17	CosmettoPartial evidence	Oakland, United StatesHQ checked Sep 4, 2026	1-10	1
	“Cosmetto provides information technology (IT) services to businesses.” Source: company website · checked Sep 4, 2026
18	Tercero SolutionsIndirect evidence	Oakland, CA, United StatesHQ checked Sep 4, 2026	1-10	1
	“At Tercero Solutions, an Indigenous, Latine/x, and Woman-owned consultancy that proudly brings over 30 years of experience, we're on a mission to rematriate the economy by…” Source: company website · checked Sep 4, 2026

Showing 18 of 33 IT infrastructure consulting firms based in Oakland, United States

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IT infrastructure consulting firms based in Oakland, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 807 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 Oakland, over 33 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 infrastructure consulting firms, 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 Oakland, United States whose own description of what they do matches “IT infrastructure consulting firms”. 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 infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Oakland 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, 108 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 infrastructure consulting firms by metro in the United States

Frequently asked

How many IT infrastructure consulting firms are there based in Oakland, United States?

RevenueBase identified 33 IT infrastructure consulting firms headquartered in Oakland, 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?

21tech, headquartered in Oakland, tops this list with the largest team on record.

Which city has the most IT infrastructure consulting firms?

New York leads with 807 headquartered companies, followed by Houston (522) and Atlanta (402).

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 108 verified decision-maker contacts tracked across these 33 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.