Company lists · Data refreshed September 2026

Top 25 Telecom engineering contractors worldwide

Name: Telecom engineering contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 13,769 companies tracked

RevenueBase identified 13,769 telecom engineering contractors worldwide as of September 2026 and tracks 379,520 professional contacts across them, including 78,607 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom engineering contractors 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 19, 2026. Country and city lists for telecom engineering contractors 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 19, 2026 86% judged on-target in blind review

13,769Companies

379,520Contacts tracked

78,607Verified emails

0Mobile numbers

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The 25 largest telecom engineering contractors worldwide

Ranked by team size

Top 25 of 13,769 telecom engineering contractors worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecom engineering contractors: 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	Serede	Partial evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	10001+	8,011 contacts →
	Partial evidence “A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.” Source: RevenueBase Database · checked Sep 19, 2026
2	Windstream	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 19, 2026	10001+	7,275 contacts →
	Indirect evidence “Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
3	Rosendin	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	10001+	4,437 contacts →
	Indirect evidence “Since 1919, Rosendin has created a reputation for building quality electrical and communications installations, building value for clients, and building people.” Source: RevenueBase Database · checked Sep 19, 2026
4	Viavi Solutions	Indirect evidence	Chandler, AZ, United StatesHQ checked Sep 19, 2026	1,001-5,000	4,248 contacts →
	Indirect evidence “VIAVI Solutions (NASDAQ: VIAV) is a global leader in both network and service enablement and optical security performance products and solutions.” Source: RevenueBase Database · checked Sep 19, 2026
5	Circet	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	10001+	3,901 contacts →
	Partial evidence “A global player in the telecom infrastructure services industry, the Circet Group provides operators, local authorities and key accounts throughout the world with an integrated…” Source: RevenueBase Database · checked Sep 19, 2026
6	Mastec Communications Group	Partial evidence	Coral Gables, FL, United StatesHQ checked Sep 19, 2026	5,001-10,000	3,207 contacts →
	Partial evidence “MasTec Communications Group (MCG) is a division of MasTec that provides comprehensive services and turnkey solutions for Telecom operators.” Source: RevenueBase Database · checked Sep 19, 2026
7	GTL Limited	Partial evidence	Navi Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	2,780 contacts →
	Partial evidence “GTL, a Global Group Enterprise, is a leading Network Services company, offering services and solutions to address the Network Life Cycle requirements of Telecom Operators…” Source: RevenueBase Database · checked Sep 19, 2026
8	Pearce Services	Partial evidence	Paso Robles, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,620 contacts →
	Partial evidence “PEARCE from CBRE is the largest national independent provider of outsourced repair, maintenance, and engineering services to critical infrastructure in the renewable energy, power…” Source: RevenueBase Database · checked Sep 19, 2026
9	Procisa DO Brasil	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	1,001-5,000	2,538 contacts →
	Indirect evidence “Prazer, somos a Procisa do Brasil!” Source: RevenueBase Database · checked Sep 19, 2026
10	Sielte SPA	Indirect evidence	Rome, ItalyHQ checked Sep 19, 2026	1,001-5,000	2,448 contacts →
	Indirect evidence “Oltre Persone, distribuite su 21 Centri Operativi in tutta Italia, che ogni giorno installano, collaudano, gestiscono il commissioning e le manutenzioni, progettano, implementano…” Source: RevenueBase Database · checked Sep 19, 2026
11	Sirti S.P.A	Partial evidence	Sesto San Giovanni (mi), ItalyHQ checked Sep 19, 2026	1,001-5,000	2,332 contacts →
	Partial evidence “Sirti is Italy's leading technology company in the design and production of network infrastructures and telecoms system integration.” Source: RevenueBase Database · checked Sep 19, 2026
12	Sogetrel	Indirect evidence	Issy Les Moulineaux, FranceHQ checked Sep 19, 2026	1,001-5,000	2,285 contacts →
	Indirect evidence “En première ligne de la transformation numérique des entreprises et des territoires, le Groupe Sogetrel est spécialisé dans les services aux infrastructures numériques et…” Source: RevenueBase Database · checked Sep 19, 2026
13	LCC	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 19, 2026	5,001-10,000	2,193 contacts →
	Indirect evidence “In Feb.” Source: RevenueBase Database · checked Sep 19, 2026
14	Infinera	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,959 contacts →
	Indirect evidence “Infinera is now part of Nokia.” Source: RevenueBase Database · checked Sep 19, 2026
15	Service Stream	Indirect evidence	Docklands, AustraliaHQ checked Sep 19, 2026	1,001-5,000	1,823 contacts →
	Indirect evidence “Service Stream plays a vital role, working with our clients in keeping communities connected to essential network services across Australia.” Source: RevenueBase Database · checked Sep 19, 2026
16	Engelmig Energia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	5,001-10,000	1,818 contacts →
	Indirect evidence “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Source: RevenueBase Database · checked Sep 19, 2026
17	Henkels & Mccoy, INC	Partial evidence	Blue Bell, PA, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,813 contacts →
	Partial evidence “Henkels & McCoy, Inc.(H&M) is a leading utility construction firm providing critical infrastructure for the power, oil & gas pipeline, telecommunications, and gas distribution…” Source: RevenueBase Database · checked Sep 19, 2026
18	Grupo RCS	Indirect evidence	Brasilia, BrazilHQ checked Sep 19, 2026	5,001-10,000	1,810 contacts →
	Indirect evidence “A RCS é uma empresa de Engenharia especializada em oferecer serviços técnicos de missão crítica com alta tecnologia aplicada, para clientes que necessitam manter suas atividades…” Source: RevenueBase Database · checked Sep 19, 2026
19	IES Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,800 contacts →
	Indirect evidence “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Source: RevenueBase Database · checked Sep 19, 2026
20	Camusat	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	1,001-5,000	1,726 contacts →
	Partial evidence “Camusat is one of the market leaders in the implementation of telecom infrastructures and one of the most experienced network developers.” Source: RevenueBase Database · checked Sep 19, 2026
21	Yates Construction	Indirect evidence	Philadelphia, MS, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,713 contacts →
	Indirect evidence “Yates Construction is part of The Yates Companies, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
22	Congruex	Indirect evidence	Boulder, CO, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,676 contacts →
	Indirect evidence “Congruex was formed in 2017 to take advantage of historic demand for digital connectivity.” Source: RevenueBase Database · checked Sep 19, 2026
23	Telecon	Partial evidence	Montreal, QC, CanadaHQ checked Sep 19, 2026	1,001-5,000	1,573 contacts →
	Partial evidence “From a regional telecom networks builder in 1967 in Quebec (Canada), Telecon has grown into a world-class industry-leading telecom networks design, infrastructure and connectivity…” Source: RevenueBase Database · checked Sep 19, 2026
24	Pt. Mora Telematika Indonesia TBK	Partial evidence	Jakarta Pusat, IndonesiaHQ checked Sep 19, 2026	1,001-5,000	1,510 contacts →
	Partial evidence “Moratelindo is part of PT Ekamas Mora RepublikTbk (MoraRepublic), one of Indonesia’s largest integrated infrastructure Telecommunication and connectivity providers.” Source: RevenueBase Database · checked Sep 19, 2026
25	Tulip Telecom	Partial evidence	New Delhi, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,481 contacts →
	Partial evidence “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Source: RevenueBase Database · checked Sep 19, 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: telecom engineering contractors. 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 telecom engineering contractors.
Partial evidence: Its own public description names part of telecom engineering contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom engineering contractors. 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 13,769 telecom engineering contractors worldwide

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Telecom engineering contractors worldwide at a glance

As of Sep 19, 2026

20.7%Verified-email coverage

27.6Average contacts per company

11-50Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

4,489

11-50

5,354

51-200

2,552

201-500

754

501-1,000

277

1,001-5,000

212

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 telecom engineering contractors, 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: 46 countries, largest first: the United States, Brazil, the United Kingdom, India, France, Germany, Spain, Italy, Australia, Canada and 36 more. Country and city lists for telecom engineering contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecom engineering contractors”. 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 telecom engineering contractors), 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 telecom engineering contractors, 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, 78,607 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 19, 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.

Telecom engineering contractors by location

61 lists · largest first

Every Telecom engineering contractors 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 telecom engineering contractors, 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 telecom engineering contractors are there worldwide?

RevenueBase identified 13,769 telecom engineering contractors 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?

Serede, headquartered in Rio De Janeiro, tops this list with the largest team on record.

Which country has the most telecom engineering contractors?

The United States leads with 3,120 companies, followed by Brazil (1,097) and the United Kingdom (890). Every telecom engineering contractors list by country and city is linked on this page.

Which city has the most telecom engineering contractors?

Sao Paulo leads with 176 headquartered companies, followed by London (103) and Bogota (102).

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 78,607 verified decision-maker contacts tracked across these 13,769 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 19, 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.