Company lists · Data refreshed September 2026

Top 25 Process engineering firms worldwide

Name: Process engineering firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 14,181 companies tracked

RevenueBase identified 14,181 process engineering firms worldwide as of September 2026 and tracks 351,400 professional contacts across them, including 80,775 with verified work emails and 0 with mobile numbers. The United States is the largest market and Tehran the largest hub.

This list covers process engineering firms worldwide, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for process engineering firms follow the table.

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 17, 2026 86% judged on-target in blind review

14,181Companies

351,400Contacts tracked

80,775Verified emails

0Mobile numbers

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The 25 largest process engineering firms worldwide

Ranked by team size

Top 25 of 14,181 process engineering firms worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to process engineering firms: 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	Fluor Corporation	Partial evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	10001+	33,084 contacts →
	Partial evidence “Fluor Corporation is a global engineering, procurement and construction company.” Source: RevenueBase Database · checked Sep 17, 2026
2	Amec Foster Wheeler	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	10001+	14,368 contacts →
	Partial evidence “Wood Group has combined with Amec Foster Wheeler to form a new global leader in the delivery of project, engineering and technical services to energy and industrial markets.” Source: RevenueBase Database · checked Sep 17, 2026
3	Zachry Group	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 17, 2026	10001+	6,824 contacts →
	Partial evidence “Zachry Group is North America's pacesetter in turnkey engineering, construction, maintenance, turnaround and fabrication services to the energy, chemicals, power, manufacturing…” Source: RevenueBase Database · checked Sep 17, 2026
4	Bilfinger	Indirect evidence	Mannheim, GermanyHQ checked Sep 17, 2026	10001+	4,035 contacts →
	Indirect evidence “Bilfinger is an international industrial services provider with a vision to be the No.” Source: RevenueBase Database · checked Sep 17, 2026
5	S&b	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	3,510 contacts →
	Indirect evidence “S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Source: RevenueBase Database · checked Sep 17, 2026
6	UTC Engenharia	Partial evidence	São Paulo, BrazilHQ checked Sep 17, 2026	10001+	3,176 contacts →
	Partial evidence “The Company operates in sundry markets, taking the lead in such sectors as oil & gas production and processing, petrochemicals, power generation, steel production, paper & pulp…” Source: RevenueBase Database · checked Sep 17, 2026
7	Golder	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 17, 2026	5,001-10,000	3,167 contacts →
	Indirect evidence “Golder was acquired by WSP.” Source: RevenueBase Database · checked Sep 17, 2026
8	Entrust Solutions Group	Partial evidence	Lisle, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,966 contacts →
	Partial evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 17, 2026
9	Hexagon Asset Lifecycle Intelligence	Indirect evidence	Madison, AL, United StatesHQ checked Sep 17, 2026	10001+	2,630 contacts →
	Indirect evidence “Hexagon’s Asset Lifecycle Intelligence division helps clients design, construct and operate more profitable, safe and sustainable industrial facilities.” Source: RevenueBase Database · checked Sep 17, 2026
10	Brown & Root Industrial Services, LLC	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 17, 2026	5,001-10,000	1,940 contacts →
	Partial evidence “Brown & Root Industrial Services offers the full range of industrial services – engineering, construction, maintenance, turnaround, and specialty (painting, scaffolding…” Source: RevenueBase Database · checked Sep 17, 2026
11	Aarvi Encon	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	5,001-10,000	1,890 contacts →
	Partial evidence “Aarvi Encon has established it's leadership in providing Engineering Consultancy and Technical Assistance to Oil & Gas, Refinery, Petrochemical, Pipelines, Power & Infrastructure…” Source: RevenueBase Database · checked Sep 17, 2026
12	Hargrove Engineers & Constructors	Partial evidence	Mobile, AL, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,877 contacts →
	Partial evidence “Hargrove is a full-service engineering, procurement, and construction management firm delivering multi-discipline engineering, project delivery, controls & automation, and…” Source: RevenueBase Database · checked Sep 17, 2026
13	AYTB	Indirect evidence	Jubail Industrial City, Saudi ArabiaHQ checked Sep 17, 2026	5,001-10,000	1,812 contacts →
	Indirect evidence “AYTB had recognized the Saudi Dream 45 years ago when the Royal Commission for Jubail and Yanbu was set up with a vision to build a huge petrochemical industry to catapult Saudi…” Source: RevenueBase Database · checked Sep 17, 2026
14	Burns & Mcdonnell India	Indirect evidence	Vikhroli West, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,724 contacts →
	Indirect evidence “At Burns & McDonnell India, we are a diverse team of talented engineers with multidiscipline design and consultancy working across sectors in critical infrastructure: oil and gas…” Source: RevenueBase Database · checked Sep 17, 2026
15	CRB	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “CRB designs and builds the facilities that help bring life-enhancing therapies, critical medicines, and essential products to people around the world.” Source: RevenueBase Database · checked Sep 17, 2026
16	EKIUM	Indirect evidence	Lyon Cedex 07, FranceHQ checked Sep 17, 2026	1,001-5,000	1,502 contacts →
	Indirect evidence “Welcome to Ekium!” Source: RevenueBase Database · checked Sep 17, 2026
17	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,488 contacts →
	Indirect evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
18	Tkil Industries	Indirect evidence	Pune, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,296 contacts →
	Indirect evidence “TKIL Industries Pvt.” Source: RevenueBase Database · checked Sep 17, 2026
19	Englobal	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	1,183 contacts →
	Partial evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 17, 2026
20	L&t Heavy Engineering	Partial evidence	Mumbai, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,152 contacts →
	Partial evidence “L&T Heavy Engineering business is global leader in supply of the Engineered to order hi-tech equipment needs of Refinery, Oil & Gas, Fertilizer, Petrochemicals and Nuclear plants.” Source: RevenueBase Database · checked Sep 17, 2026
21	Zuhair Fayez	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 17, 2026	1,001-5,000	1,113 contacts →
	Partial evidence “Zuhair Fayez stands as the region's foremost engineering and consulting firm, renowned for our innovative approach in architecture, project management, and oil and gas services.” Source: RevenueBase Database · checked Sep 17, 2026
22	Barr Engineering CO	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,088 contacts →
	Partial evidence “Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.” Source: RevenueBase Database · checked Sep 17, 2026
23	Petrocon Engineers & Consultant	Partial evidence	Hyderabad, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,071 contacts →
	Partial evidence “Established in 2011, Petrocon Engineers & Consultants is a trusted partner in Detailed Design Engineering, delivering high-precision solutions to industries worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
24	Qualidados Engenharia	Indirect evidence	Salvador, BrazilHQ checked Sep 17, 2026	501-1,000	927 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
25	M. N. Dastur & Co. P LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 17, 2026	1,001-5,000	894 contacts →
	Indirect evidence “M.” Source: RevenueBase Database · checked Sep 17, 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: process engineering firms. 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 process engineering firms.
Partial evidence: Its own public description names part of process engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name process engineering firms. 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 14,181 process engineering firms worldwide

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Process engineering firms worldwide at a glance

As of Sep 17, 2026

23.0%Verified-email coverage

24.8Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Tehran

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

6,351

11-50

4,902

51-200

1,983

201-500

530

501-1,000

202

1,001-5,000

130

5,001-10,000

10001+

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 process engineering firms, 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.
Coverage: 47 countries, largest first: the United States, Brazil, India, Italy, the United Kingdom, Germany, Spain, France, Canada, Türkiye and 37 more. Country and city lists for process engineering firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “process engineering firms”. 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 process engineering firms), 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 process engineering firms, and records with no verified work email.
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, 80,775 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 17, 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.

Process engineering firms by location

68 lists · largest first

Every Process engineering firms 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 Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its 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 the category the list is about. Each row is rated strong evidence when the company's own description names process engineering firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many process engineering firms are there worldwide?

RevenueBase identified 14,181 process engineering firms worldwide 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?

Fluor Corporation, headquartered in Irving, tops this list with the largest team on record.

Which country has the most process engineering firms?

The United States leads with 2,149 companies, followed by Brazil (1,472) and India (1,340). Every process engineering firms list by country and city is linked on this page.

Which city has the most process engineering firms?

Tehran leads with 245 headquartered companies, followed by Houston (189) and Pune (166).

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 80,775 verified decision-maker contacts tracked across these 14,181 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 17, 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 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.