Company lists · Data refreshed September 2026

Top 25 Telecommunication engineering firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 21,002 companies tracked

RevenueBase identified 21,002 company matches for telecommunication engineering firms worldwide as of September 2026 and tracks 355,776 professional contacts across them, including 67,268 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for telecommunication engineering firms 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 September 30, 2026. Country and city lists for telecommunication engineering firms 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 Sep 30, 2026 How this list was built

21,002Companies

355,776Contacts tracked

67,268Verified emails

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The 25 largest telecommunication engineering firms worldwide

Ranked by team size

Top 25 of 21,002 company matches for telecommunication engineering firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	Serede	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 30, 2026	10001+	8,011 contacts →
	Exact match “A Serede é uma empresa prestadora de serviços de implantação e manutenção em redes de Telecom, fundada em 06 de agosto de 2007.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	Circet	Exact match	Paris, FranceHQ recorded Sep 30, 2026	10001+	3,901 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Mastec Communications Group	Exact match	Coral Gables, FL, United StatesHQ recorded Sep 30, 2026	5,001-10,000	3,207 contacts →
	Exact match “MasTec Communications Group (MCG) is a division of MasTec that provides comprehensive services and turnkey solutions for Telecom operators.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 30, 2026	n/a	2,678 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Procisa DO Brasil	Exact match	São Paulo, BrazilHQ recorded Sep 30, 2026	1,001-5,000	2,538 contacts →
	Exact match “Prazer, somos a Procisa do Brasil!” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	Sielte SPA	Exact match	Rome, ItalyHQ recorded Sep 30, 2026	1,001-5,000	2,448 contacts →
	Exact match “Oltre Persone, distribuite su 21 Centri Operativi in tutta Italia, che ogni giorno installano, collaudano, gestiscono il commissioning e le manutenzioni, progettano, implementano…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	Sirti S.P.A	Exact match	Sesto San Giovanni (mi), ItalyHQ recorded Sep 30, 2026	1,001-5,000	2,332 contacts →
	Exact match “Sirti is Italy's leading technology company in the design and production of network infrastructures and telecoms system integration.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Sogetrel	Exact match	Issy Les Moulineaux, FranceHQ recorded Sep 30, 2026	1,001-5,000	2,285 contacts →
	Exact match “En première ligne de la transformation numérique des entreprises et des territoires, le Groupe Sogetrel est spécialisé dans les services aux infrastructures numériques et…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	LCC	Exact match	Mclean, VA, United StatesHQ recorded Sep 30, 2026	5,001-10,000	2,193 contacts →
	Exact match “In Feb.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Infinera	Exact match	San Jose, CA, United StatesHQ recorded Sep 30, 2026	1,001-5,000	1,959 contacts →
	Exact match “Infinera is now part of Nokia.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	Grupo RCS	Exact match	Brasilia, BrazilHQ recorded Sep 30, 2026	5,001-10,000	1,810 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	IES Communications	Exact match	Tempe, AZ, United StatesHQ recorded Sep 30, 2026	1,001-5,000	1,800 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Camusat	Exact match	Paris, FranceHQ recorded Sep 30, 2026	1,001-5,000	1,726 contacts →
	Exact match “Camusat is one of the market leaders in the implementation of telecom infrastructures and one of the most experienced network developers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	PT Berca Hardayaperkasa	Exact match	Jakarta Pusat, IndonesiaHQ recorded Sep 30, 2026	1,001-5,000	1,701 contacts →
	Exact match “Since its establishment in 1990, PT.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	Telecon	Exact match	Montreal, QC, CanadaHQ recorded Sep 30, 2026	1,001-5,000	1,573 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Pt. Mora Telematika Indonesia TBK	Exact match	Jakarta Pusat, IndonesiaHQ recorded Sep 30, 2026	1,001-5,000	1,510 contacts →
	Exact match “Moratelindo is part of PT Ekamas Mora RepublikTbk (MoraRepublic), one of Indonesia’s largest integrated infrastructure Telecommunication and connectivity providers.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Tulip Telecom	Exact match	New Delhi, IndiaHQ recorded Sep 30, 2026	1,001-5,000	1,481 contacts →
	Exact match “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Sofrecom Tunisie	Exact match	Tunis, TunisiaHQ recorded Sep 30, 2026	1,001-5,000	1,397 contacts →
	Exact match “Sofrecom, filiale du groupe France Télécom - Orange, a développé depuis plus de 45 ans un savoir-faire unique dans les métiers de l’opérateur, qui en fait aujourd’hui l’un des…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	Aerial Telecom Solutions	Exact match	Mohali, IndiaHQ recorded Sep 30, 2026	5,001-10,000	1,388 contacts →
	Exact match “Aerial Telecom Solutions Private Limited is a global systems integrator and technology partner, driving next-generation connectivity and digital transformation across diverse…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	Italtel	Exact match	Milan, GermanyHQ recorded Sep 30, 2026	1,001-5,000	1,279 contacts →
	Exact match “We help our customers to choose the most suitable solutions for the characteristics of their business, to develop the traditional communication technologies they already have in…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Wachter, INC	Exact match	Lenexa, KS, United StatesHQ recorded Sep 30, 2026	1,001-5,000	1,237 contacts →
	Exact match “Wachter is on the cutting-edge of technology and infrastructure installation and has been since 1930.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	ZENER	Exact match	Madrid, SpainHQ recorded Sep 30, 2026	5,001-10,000	1,207 contacts →
	Exact match “En Zener crecemos acelerando el crecimiento de nuestros clientes.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Cablex AG	Exact match	Muri Bei Bern, SwitzerlandHQ recorded Sep 30, 2026	1,001-5,000	1,091 contacts →
	Exact match “Connected for the future with cablex.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	CCI Systems	Exact match	Iron Mountain, MI, United StatesHQ recorded Sep 30, 2026	1,001-5,000	1,077 contacts →
	Exact match “CCI Systems is an employee-owned solution provider specializing in telecommunications, comprehensive network assessments, industry-leading engineering, drafting and design…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Kelly Group	Exact match	Wembley, United KingdomHQ recorded Sep 30, 2026	1,001-5,000	1,053 contacts →
	Exact match “Established in 1985 to support the emerging UK cable television market, Kelly Group has diversified to meet the needs of our clients.” Recorded in the RevenueBase company graph · Sep 30, 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 “telecommunication engineering firms”. 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 21,002 telecommunication engineering firms worldwide

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Telecommunication engineering firms worldwide at a glance

As of Sep 30, 2026

18.9%Verified-email coverage

16.9Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Sao Paulo

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

9,128

11-50

7,955

51-200

2,650

201-500

699

501-1,000

250

1,001-5,000

149

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 telecommunication engineering firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “telecommunication engineering firms” 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 67,268 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 September 30, 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.

Telecommunication engineering firms by location

106 lists · largest first

Every Telecommunication 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 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 “telecommunication engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecommunication engineering firms are there worldwide?

RevenueBase identified 21,002 company matches for telecommunication engineering firms worldwide as of September 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?

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

Which country has the most telecommunication engineering firms?

The United States leads with 3,829 companies, followed by Brazil (1,338) and the United Kingdom (1,102). Every telecommunication engineering firms list by country and city is linked on this page.

Which city has the most telecommunication engineering firms?

Sao Paulo leads with 327 company records, followed by London (135) and Tehran (124).

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 67,268 professional contacts with verified work emails tracked across these 21,002 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 September 30, 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.