Company lists · Data refreshed September 2026

Top 25 Infrastructure services companies worldwide

Name: Infrastructure services companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 20,494 companies tracked

RevenueBase identified 20,494 infrastructure services companies worldwide as of September 2026 and tracks 965,236 professional contacts across them, including 229,348 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers infrastructure services companies 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 20, 2026. Country and city lists for infrastructure services companies 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 20, 2026 86% judged on-target in blind review

20,494Companies

965,236Contacts tracked

229,348Verified emails

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The 25 largest infrastructure services companies worldwide

Ranked by team size

Top 25 of 20,494 infrastructure services companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure services 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	Kyndryl	Strong evidence	New York City, NY, United StatesHQ checked Sep 20, 2026	10001+	45,903 contacts →
	Strong evidence “We have the world’s best talent that design, run, and manage the most advanced and reliable technology infrastructure each day.” Source: RevenueBase Database · checked Sep 20, 2026
2	Saipem	Strong evidence	Milan, ItalyHQ checked Sep 20, 2026	10001+	34,095 contacts →
	Strong evidence “Saipem is a global leader in the engineering and construction of major projects for the energy and infrastructure sectors, both offshore and onshore.” Source: RevenueBase Database · checked Sep 20, 2026
3	Atkinsréalis	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 20, 2026	10001+	22,733 contacts →
	Indirect evidence “We are a world-class engineering services and nuclear organization.” Source: RevenueBase Database · checked Sep 20, 2026
4	Tata Projects	Indirect evidence	Mumbai, IndiaHQ checked Sep 20, 2026	1,001-5,000	14,384 contacts →
	Indirect evidence “Tata Projects is one of the most admired Technology led Engineering, Procurement and Construction (EPC) companies in India.” Source: RevenueBase Database · checked Sep 20, 2026
5	Verizon Business	Indirect evidence	Basking Ridge, NJ, United StatesHQ checked Sep 20, 2026	10001+	12,837 contacts →
	Indirect evidence “You’re more than a business, agency or organization leader.” Source: RevenueBase Database · checked Sep 20, 2026
6	Black & Veatch	Indirect evidence	Overland Park, KS, United StatesHQ checked Sep 20, 2026	10001+	10,851 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
7	Downer	Indirect evidence	North Ryde, AustraliaHQ checked Sep 20, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sulzer	Strong evidence	Winterthur, SwitzerlandHQ checked Sep 20, 2026	10001+	8,220 contacts →
	Strong evidence “Sulzer is a global leader in critical applications for core infrastructure and processes for large essential industries around the world.” Source: RevenueBase Database · checked Sep 20, 2026
9	URS Corporation, An Aecom Company	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	10001+	7,706 contacts →
	Indirect evidence “URS Corporation operations are now affiliated with AECOM.” Source: RevenueBase Database · checked Sep 20, 2026
10	HNTB	Strong evidence	Kansas City, MO, United StatesHQ checked Sep 20, 2026	5,001-10,000	7,469 contacts →
	Strong evidence “For over a century, HNTB has shaped the built environment with distinctive expertise across a full spectrum of infrastructure solutions.” Source: RevenueBase Database · checked Sep 20, 2026
11	Windstream	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 20, 2026	10001+	7,275 contacts →
	Indirect evidence “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
12	AMEY	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	10001+	6,667 contacts →
	Strong evidence “Who we are: Amey is a global, integrated infrastructure consultancy and operations partner.” Source: RevenueBase Database · checked Sep 20, 2026
13	Colt Technology Services	Strong evidence	London, United KingdomHQ checked Sep 20, 2026	5,001-10,000	6,233 contacts →
	Strong evidence “Colt Technology Services (Colt) is a global digital infrastructure company which creates extraordinary connections to help businesses succeed.” Source: RevenueBase Database · checked Sep 20, 2026
14	Lamprell	Strong evidence	Sharjah, United Arab EmiratesHQ checked Sep 20, 2026	5,001-10,000	6,080 contacts →
	Strong evidence “With 50 years of experience, Lamprell is a key player in the global offshore wind and oil & gas markets, delivering high-quality, complex energy infrastructure projects.” Source: RevenueBase Database · checked Sep 20, 2026
15	Webuild	Strong evidence	Rozzano (mi), ItalyHQ checked Sep 20, 2026	10001+	5,966 contacts →
	Strong evidence “Webuild is a global leader in the construction of large, complex infrastructure, with a focus on sustainable mobility, hydropower, water treatment and supply, and green buildings.” Source: RevenueBase Database · checked Sep 20, 2026
16	Aecon Group INC	Strong evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	10001+	5,565 contacts →
	Strong evidence “Aecon Group Inc.(TSX: ARE) is a North American construction and infrastructure development company with global experience.” Source: RevenueBase Database · checked Sep 20, 2026
17	Concremat Engenharia E Tecnologia	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	1,001-5,000	5,154 contacts →
	Indirect evidence “Desde 2017 a Concremat atua como plataforma integradora de negócios para a China Communication Construction conectando a América Latina a uma rede global de especialistas.” Source: RevenueBase Database · checked Sep 20, 2026
18	NTT	Indirect evidence	Chiyoda-ku, JapanHQ checked Sep 20, 2026	10001+	4,680 contacts →
	Indirect evidence “NTT is a leading global technology innovator, providing a broad range of services to both consumers and businesses.” Source: RevenueBase Database · checked Sep 20, 2026
19	Shared Services Canada Services Partagés Canada	Strong evidence	Ottawa, ON, CanadaHQ checked Sep 20, 2026	5,001-10,000	4,650 contacts →
	Strong evidence “Shared Services Canada is modernizing how the Government of Canada manages its information technology (IT) infrastructure.” Source: RevenueBase Database · checked Sep 20, 2026
20	Grupo Cobra	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	10001+	4,478 contacts →
	Indirect evidence “Grupo Cobra es una compañía global de más de 80 años de experiencia en el sector de la ingeniería industrial aplicada y servicios especializados.” Source: RevenueBase Database · checked Sep 20, 2026
21	Michael Baker International	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 20, 2026	5,001-10,000	4,362 contacts →
	Strong evidence “Michael Baker International is a leading provider of engineering, consulting, and technology services spanning four Verticals: Infrastructure, Places and Facilities, Federal and…” Source: RevenueBase Database · checked Sep 20, 2026
22	Primoris Services Corporation	Strong evidence	Dallas, TX, United StatesHQ checked Sep 20, 2026	10001+	4,089 contacts →
	Strong evidence “Primoris Services Corporation (NYSE: PRIM) is a leading provider of critical infrastructure services to the utility, energy, and renewables markets throughout the United States…” Source: RevenueBase Database · checked Sep 20, 2026
23	ICA Ingenieros Civiles Asociados	Indirect evidence	MexicoHQ checked Sep 20, 2026	10001+	3,752 contacts →
	Indirect evidence “Somos una empresa mexicana con 68 años de experiencia en brindar soluciones integrales a retos complejos de infraestructura.” Source: RevenueBase Database · checked Sep 20, 2026
24	Black BOX	Strong evidence	Plano, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	3,667 contacts →
	Strong evidence “Black Box is a global leader in digital infrastructure solutions, delivering network and system integration, managed services, and technology products to Fortune 100 and top…” Source: RevenueBase Database · checked Sep 20, 2026
25	CBSI	Indirect evidence	Volta Redonda, BrazilHQ checked Sep 20, 2026	10001+	3,658 contacts →
	Indirect evidence “Somos a CBSI!” Source: RevenueBase Database · checked Sep 20, 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: infrastructure services 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 infrastructure services companies.
Partial evidence: Its own public description names part of infrastructure services companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure services 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 20,494 infrastructure services companies worldwide

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Infrastructure services companies worldwide at a glance

As of Sep 20, 2026

23.8%Verified-email coverage

47.1Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

7,630

11-50

7,105

51-200

3,307

201-500

1,162

501-1,000

511

1,001-5,000

526

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 infrastructure services 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.
Coverage: Every country. Country and city lists for infrastructure services companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “infrastructure services 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 infrastructure services 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 infrastructure services companies, 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, 229,348 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 20, 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.

Infrastructure services companies by location

91 lists · largest first

Every Infrastructure services companies 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 infrastructure services companies, 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 infrastructure services companies are there worldwide?

RevenueBase identified 20,494 infrastructure services companies 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?

Kyndryl, headquartered in New York City, tops this list with the largest team on record.

Which country has the most infrastructure services companies?

The United States leads with 3,573 companies, followed by India (2,188) and Brazil (1,454). Every infrastructure services companies list by country and city is linked on this page.

Which city has the most infrastructure services companies?

Sao Paulo leads with 278 headquartered companies, followed by London (236) and New Delhi (159).

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 229,348 verified decision-maker contacts tracked across these 20,494 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 20, 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.