Company lists · Data refreshed November 2026

Top 25 Mechanical systems designers worldwide

Name: Mechanical systems designers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 27,543 companies tracked

RevenueBase identified 27,543 company matches for mechanical systems designers worldwide as of November 2026 and tracks 479,928 professional contacts across them, including 163,736 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for mechanical systems designers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for mechanical systems designers follow the table.

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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

27,543Companies

479,928Contacts tracked

163,736Verified emails

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The 25 largest mechanical systems designers worldwide

Ranked by team size

Top 25 of 27,543 company matches for mechanical systems designers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Equans	Exact match	Courbevoie, FranceHQ recorded Nov 6, 2026	10001+	5,803 contacts →
	Exact match “Equans, a Bouygues group company, is a world leader in multi-technical services with offices in 20 country hubs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Equans Belux	Exact match	Brussels, BelgiumHQ recorded Nov 6, 2026	5,001-10,000	5,429 contacts →
	Exact match “What if you could use your talent to contribute to the great challenges of tomorrow?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Ips-Integrated Project Services	Exact match	Blue Bell, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,728 contacts →
	Exact match “IPS, a Berkshire Hathaway company, is a global leader in technical consulting, architecture, engineering, procurement, construction management, commissioning, qualification…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Power Engineers	Exact match	Hailey, ID, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,161 contacts →
	Exact match “POWER Engineers is now part of WSP.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Southland Industries	Exact match	Garden Grove, MD, United StatesHQ recorded Nov 6, 2026	10001+	3,122 contacts →
	Exact match “As one of the nation's largest building systems experts, Southland Industries provides innovative, practical results for your engineering, construction, service, and energy needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Croonwolter&dros	Exact match	Rotterdam, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	2,672 contacts →
	Exact match “For more than 140 years Croonwolter & dros has been in the vanguard of new developments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Multiconsult	Exact match	Oslo, NorwayHQ recorded Nov 6, 2026	1,001-5,000	2,654 contacts →
	Exact match “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Acco Engineered Systems	Exact match	Pasadena, CA, United StatesHQ recorded Nov 6, 2026	5,001-10,000	2,633 contacts →
	Exact match “Since 1934, owners and builders have selected ACCO Engineered Systems to design, install, and maintain more than mechanical projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	The Haskell Company	Exact match	Jacksonville, WI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,439 contacts →
	Exact match “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	KEO International Consultants	Exact match	Safat, KuwaitHQ recorded Nov 6, 2026	1,001-5,000	2,198 contacts →
	Exact match “From shaping iconic skylines to crafting sustainable communities, KEO builds legacies for a better tomorrow.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Colliers Engineering & Design	Exact match	Holmdel, NC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,172 contacts →
	Exact match “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,116 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Salas O'brien	Exact match	Irvine, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,110 contacts →
	Exact match “Salas O’Brien is an employee-owned engineering, science, and technical services firm focused on advancing the human experience through the built environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Bowman Consulting	Exact match	Reston, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,827 contacts →
	Exact match “Headquartered in Reston, Virginia, Bowman is a national engineering services firm delivering infrastructure solutions to customers who own, develop and maintain the built…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	CHA Consulting, INC	Exact match	Albany, NH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,780 contacts →
	Exact match “CHA Consulting, Inc.(CHA) is an innovative, full-service engineering, design, consulting, and program/construction management firm providing a wide range of technology-enhanced…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	BW Design Group	Exact match	St. Louis, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,703 contacts →
	Exact match “BW Design Group is the only independent, fully integrated AEC firm powered by a Manufacturer's Mindset™.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Ssoe Group	Exact match	Toledo, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,653 contacts →
	Exact match “As an internationally ranked architecture and engineering firm, SSOE is known for delivering unparalleled client value that advances the AEC industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Modern Niagara	Exact match	Kanata, ON, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,642 contacts →
	Exact match “We build for life.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Kpff Consulting Engineers	Exact match	Seattle, ID, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,631 contacts →
	Exact match “KPFF is a multi-office, multi-discipline engineering firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	IBI Group	Exact match	Amsterdam, FL, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	1,582 contacts →
	Exact match “IBI Group is a technology-driven design firm with global architecture, engineering, planning and technology expertise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Emcor Group, INC	Exact match	Norwalk, CT, United StatesHQ recorded Nov 6, 2026	10001+	1,493 contacts →
	Exact match “A Fortune 500® company and a member of the S&P 500, EMCOR Group, Inc.(NYSE: EME) is a leader in mechanical and electrical construction, industrial and energy infrastructure, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Davey Resource Group, INC	Exact match	Kent, OH, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,477 contacts →
	Exact match “Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	PAGE	Exact match	Washington, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,456 contacts →
	Exact match “Performance by Design.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	GRAY	Exact match	Lexington, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,439 contacts →
	Exact match “Founded by James Norris and Lois Howard Gray in 1960, Gray is a family-owned, fully integrated industrial design-builder specializing in engineering, architecture, construction…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Macdonald-Miller Facility Solutions	Exact match	Seatac, WA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,424 contacts →
	Exact match “MacDonald-Miller Facility Solutions is a full-service, design-build mechanical contractor in the Pacific Northwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “mechanical systems designers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 27,543 mechanical systems designers worldwide

See the full list, filter by size, metro and specialty, and access 163,736 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mechanical systems designers worldwide at a glance

As of Nov 6, 2026

34.1%Verified-email coverage

17.4Average contacts per company

11-50Median size (employees)

1.0%Largest-city concentration · Sao Paulo

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

13,504

11-50

9,564

51-200

3,054

201-500

726

501-1,000

226

1,001-5,000

133

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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.
Coverage: Every country. Country and city lists for mechanical systems designers are linked below.
What qualifies: Company records worldwide whose business descriptions match “mechanical systems designers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 163,736 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Mechanical systems designers by location

126 lists · largest first

Every Mechanical systems designers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “mechanical systems designers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mechanical systems designers are there worldwide?

RevenueBase identified 27,543 company matches for mechanical systems designers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Equans tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most mechanical systems designers?

The United States leads with 5,102 companies, followed by Italy (1,671) and Brazil (1,545). Every mechanical systems designers list by country and city is linked on this page.

Which city has the most mechanical systems designers?

Sao Paulo leads with 285 company records, followed by London (213) and Istanbul (184).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 163,736 professional contacts with verified work emails tracked across these 27,543 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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.