Company lists · Data refreshed September 2026

Top 25 Engineering companies based in Irvine, United States

Name: Engineering companies based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 119 companies tracked

This directory lists 119 engineering companies based in Irvine, United States, with 5,942 contacts and 2,865 email addresses. The list includes companies across engineering disciplines. Use it to identify potential suppliers, partners, and sales prospects as of September 2026. Across the United States, Houston is the largest hub for this category (725 companies); Irvine has 119.

Engineering companies apply scientific, mathematical, and technical principles to design, develop, test, and manage products, systems, structures, or industrial processes. This list covers companies that provide engineering design, consulting, testing, project management, or related technical services. Ranked by team size, largest first. Data current as of September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

119Companies

5,942Contacts tracked

2,865Verified emails

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The 25 largest engineering companies based in Irvine, United States

Ranked by team size

Top 25 of 119 engineering companies based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to engineering companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Salas O'brien	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,843 contacts →
	Strong evidence “Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment.” Source: RevenueBase Database · checked Sep 6, 2026
2	Shimmick Corporation	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	760 contacts →
	Indirect evidence “At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Source: RevenueBase Database · checked Sep 6, 2026
3	Arb, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	528 contacts →
	Indirect evidence “ARB Inc.” Source: RevenueBase Database · checked Sep 6, 2026
4	LSA	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	201-500	332 contacts →
	Indirect evidence “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Source: RevenueBase Database · checked Sep 6, 2026
5	Interwest Consulting Group	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	201-500	221 contacts →
	Indirect evidence “Interwest specializes in providing professional and consulting services to public agencies across California, Nevada, Colorado, and beyond.” Source: RevenueBase Database · checked Sep 6, 2026
6	Fuscoe Engineering, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	201-500	216 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
7	IDS Group, INC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	205 contacts →
	Strong evidence “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Source: RevenueBase Database · checked Sep 6, 2026
8	Leighton	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	190 contacts →
	Indirect evidence “Leighton, a Verdantas Company, provides environmental, geotechnical, materials testing, and special inspection services across the built community.” Source: RevenueBase Database · checked Sep 6, 2026
9	RBF Consulting, A Company Of Michael Baker International	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	176 contacts →
	Strong evidence “RBF Consulting, a Company of Michael Baker International, LLC, is one of the Nation's leading civil engineering, design, planning, surveying and construction management firms…” Source: RevenueBase Database · checked Sep 6, 2026
10	EKN Engineering	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	142 contacts →
	Strong evidence “EKN Engineering takes an engineering first approach to solving the problems of asset intensive organizations and delivers data-driven results.” Source: RevenueBase Database · checked Sep 6, 2026
11	Murow Development Consultants, A Crede Company	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	91 contacts →
	Indirect evidence “Murow DC provides superior services in land development improvements, with a high level of experience, expertise, and trust.” Source: RevenueBase Database · checked Sep 6, 2026
12	Group Delta Consultants, Inc., An Nv5 Company	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	87 contacts →
	Strong evidence “Group Delta, an NV5 Company, is a geotechnical engineering firm which specializes in geotechnical investigations, forensic investigations, environmental services, material testing…” Source: RevenueBase Database · checked Sep 6, 2026
13	Aria Group	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	67 contacts →
	Strong evidence “Aria Group is the premier leader of full-range design, engineering, and manufacturing solutions for the Transportation, Aerospace, Entertainment and Production Industries.” Source: RevenueBase Database · checked Sep 6, 2026
14	Ficcadenti Waggoner And Castle Structural Engineers FWC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	60 contacts →
	Strong evidence “FWC consists of over 70 professionals working to provide our clients with state-of-the-art structural engineering services.” Source: RevenueBase Database · checked Sep 6, 2026
15	VA Consulting, Inc., NOW Stantec	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	60 contacts →
	Strong evidence “VA Consulting has joined Stantec, an architecture and engineering firm with more than creative team members across North America and the world.” Source: RevenueBase Database · checked Sep 6, 2026
16	AKM Consulting Engineers	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	49 contacts →
	Strong evidence “Based in Irvine, California, AKM Consulting Engineers is a multidisciplinary firm providing expert engineering solutions to municipalities, public agencies, and state and federal…” Source: RevenueBase Database · checked Sep 6, 2026
17	Advantec Consulting Engineers, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	48 contacts →
	Indirect evidence “At ADVANTEC Consulting Engineers, we are driven by a shared commitment to shaping smarter, safer, and more connected communities.” Source: RevenueBase Database · checked Sep 6, 2026
18	Hummingbird Teksystems, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	39 contacts →
	Indirect evidence “Overview: Hummingbird TekSystem, Inc.” Source: RevenueBase Database · checked Sep 6, 2026
19	C&v Consulting, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	37 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 2026
20	Hummingbird Aero LLC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	36 contacts →
	Strong evidence “Hummingbird Aero LLC is a premier global engineering consulting and services provider focused in aircraft flight controls, actuation, hydraulic systems, avionics and software.” Source: RevenueBase Database · checked Sep 6, 2026
21	Advanced Construction Technologies	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	32 contacts →
	Strong evidence “Advanced Construction Technologies (ACT) is a diverse construction company that specializes in environmental engineering, geotechnical engineering and general construction…” Source: RevenueBase Database · checked Sep 6, 2026
22	Eukon Group	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	26 contacts →
	Indirect evidence “Eukon Group an SFC Communications, Inc.” Source: RevenueBase Database · checked Sep 6, 2026
23	National Engineering & Consulting, INC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	51-200	20 contacts →
	Strong evidence “National Engineering and Consulting, Inc.” Source: RevenueBase Database · checked Sep 6, 2026
24	Moote Companies LLC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	18 contacts →
	Indirect evidence “Moote Companies was established from the foundations of The Moote Group which was started in 1974.” Source: RevenueBase Database · checked Sep 6, 2026
25	SGE Consulting Engineers	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 6, 2026	11-50	18 contacts →
	Indirect evidence “Established in 1992, S.” Source: RevenueBase Database · checked Sep 6, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: engineering 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 engineering companies.
Partial evidence: Its own public description names part of engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering 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 119 engineering companies based in Irvine, United States

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Engineering companies based in Irvine, United States at a glance

As of Sep 6, 2026

48.2%Verified-email coverage

49.9Average contacts per company

11-50Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 119 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 engineering 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 Irvine, United States whose own description of what they do matches “engineering 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 engineering 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 engineering companies, and records with no verified work email. Companies headquartered outside Irvine 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, 2,865 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 6, 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.

Engineering companies by metro in the United States

Frequently asked

How many engineering companies are based in Irvine, United States?

The directory lists 119 engineering companies based in Irvine, United States as of September 2026.

What services do engineering companies provide?

Engineering companies provide services such as design, consulting, testing, project management, and technical support across disciplines and industries.

How can I find contacts at engineering companies?

This directory includes 5,942 contacts and 2,865 email addresses associated with engineering companies.

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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.