Company lists · Data refreshed September 2026

Top 25 Engineering companies based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 198 companies tracked

This directory lists 198 engineering companies based in Chicago, United States, with 16,229 contacts and 7,568 email addresses. The list includes companies across engineering disciplines, and Houston is the single most-represented city among the companies on the list. Use it to identify potential suppliers, partners, and sales prospects as of September 2026.

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

198Companies

16,229Contacts tracked

7,568Verified emails

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The 25 largest engineering companies based in Chicago, United States

Ranked by team size

Top 25 of 198 engineering companies based in Chicago, 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	The Walsh Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	4,161 contacts →
	“The Walsh Group is a 127-year-old company providing design, build, finance, operation and activation services.” Source: company website · checked Sep 6, 2026
2	Clayco	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,720 contacts →
	“Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the…” Source: company website · checked Sep 6, 2026
3	Bechtel National INC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	10001+	1,662 contacts →
	“isit the Bechtel Corporation company page Bechtel is one of the most respected global engineering, construction, and project management companies.” Source: company website · checked Sep 6, 2026
4	Benesch	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,225 contacts →
	“Serving a broad range of markets, Benesch has played a role in shaping our nation’s infrastructure and local communities for decades.” Source: company website · checked Sep 6, 2026
5	HBK Engineering, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	674 contacts →
	“HBK Engineering, LLC a Quanta Services Company is a fully licensed, professional engineering design firm headquartered in downtown Chicago providing civil, environmental…” Source: company website · checked Sep 6, 2026
6	MEADE	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	594 contacts →
	“Meade leads the field in design, construction and maintenance of electric, natural gas, and telecommunications delivery systems, both above and below ground and has done so for…” Source: company website · checked Sep 6, 2026
7	Enventure Engineering	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	569 contacts →
	“Enventure is a trusted provider of Building Engineering, Plant Design, and Compliance solutions with offices in the Chicago and delivery centres in Bangalore, Shivamogga, Hubli…” Source: company website · checked Sep 6, 2026
8	Collins Engineers, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	432 contacts →
	“In 1979, Collins Engineers, Inc.” Source: company website · checked Sep 6, 2026
9	Primera Engineers	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	362 contacts →
	“Primera Engineers is a mid-size, full-service, woman-owned (WBE) engineering design and consulting firm specializing in four areas of expertise: buildings, transportation…” Source: company website · checked Sep 6, 2026
10	Wight & Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	306 contacts →
	“At Wight & Company, we inspire the human experience through innovative design.” Source: company website · checked Sep 6, 2026
11	Ardmore Roderick	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	264 contacts →
	“Ardmore Roderick is a full-service infrastructure solutions partner delivering design, construction management, and program management services to the transportation, utility…” Source: company website · checked Sep 6, 2026
12	Infrastructure Engineering INC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	224 contacts →
	“Infrastructure Engineering Inc.(IEI) is a majority African American-owned, multi-disciplinary consulting firm with offices in eight states that delivers design engineering…” Source: company website · checked Sep 6, 2026
13	ESD NOW Stantec Consulting Services	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	208 contacts →
	“A global company, ESD is a leader in Improving Society Through the Built Environment.” Source: company website · checked Sep 6, 2026
14	D'escoto, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	156 contacts →
	“d'Escoto, Inc, established in 1972 and incorporated in 1977, is a professional business enterprise offering multi-disciplinary design and construction services to public and…” Source: company website · checked Sep 6, 2026
15	Globetrotters Engineering Corporation	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	155 contacts →
	“Globetrotters provides its clients with exceptional service and capabilities.” Source: company website · checked Sep 6, 2026
16	R.M. Chin & Associates, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	136 contacts →
	“R.M.” Source: company website · checked Sep 6, 2026
17	DBHMS	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	123 contacts →
	“We are a collection of doers and thinkers.” Source: company website · checked Sep 6, 2026
18	Terra Engineering, LTD	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	121 contacts →
	“Honored to be selected as a Crain's 2023 Best Places to Work in Chicago, TERRA Engineering is a woman-owned, full service engineering and landscape design firm headquartered in…” Source: company website · checked Sep 6, 2026
19	DB Sterlin Consultants, INC	Indirect evidence	Chicago, United StatesHQ checked Sep 6, 2026	51-200	116 contacts →
	“DB Sterlin Consultants, Inc, a minority-owned firm, is made up of highly qualified engineers, architects, planners, and surveyors.” Source: company website · checked Sep 6, 2026
20	KDM Engineering	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	114 contacts →
	“Founded upon a vision of challenging and changing the energy infrastructure to help light up the world, KDM specializes in engineering consulting and design, program and project…” Source: company website · checked Sep 6, 2026
21	Singh Associates, INC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	110 contacts →
	“For more than 30 years, SINGH + Associates has been meeting and exceeding our clients’ expectations for high quality planning, design and engineering services delivered with care…” Source: company website · checked Sep 6, 2026
22	The Concord Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	102 contacts →
	“The Concord Group is a progressive development and construction consulting firm that provides a comprehensive, fully integrated suite of project management controls to mitigate…” Source: company website · checked Sep 6, 2026
23	The Will Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	93 contacts →
	“What We Do.” Source: company website · checked Sep 6, 2026
24	Elara Engineering	Strong evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	86 contacts →
	“Elara Engineering is a full-service Mechanical, Electrical, Plumbing, Fire Protection, and Information Technology (MEPFPIT) consulting engineering firm specializing in the…” Source: company website · checked Sep 6, 2026
25	Atlas Tube	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	85 contacts →
	“DESIGN, BUILD AND CONNECT WITH ATLAS TUBE As the leading manufacturer of structural steel tubes, we're here to help you.” Source: company website · 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 198 engineering companies based in Chicago, United States

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Engineering companies based in Chicago, United States at a glance

As of Sep 6, 2026

46.6%Verified-email coverage

82.0Average contacts per company

11-50Median size (employees)

366.2%Largest-city concentration · Houston

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 Chicago, over 198 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 Chicago, 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 Chicago 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, 7,568 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 Chicago, United States?

The directory lists 198 engineering companies based in Chicago, 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 16,229 contacts and 7,568 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.