Company lists · Data refreshed September 2026

Top 25 Telecommunications engineering firms based in Brazil

Name: Telecommunications engineering firms based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,036 companies tracked

RevenueBase identified 1,036 telecommunications engineering firms headquartered in Brazil as of September 2026 and tracks 36,613 professional contacts across them, including 2,343 with verified work emails. Sao Paulo is the largest hub.

This list covers telecommunications engineering firms headquartered in Brazil, 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.

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

1,036Companies

36,613Contacts tracked

2,343Verified emails

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The 25 largest telecommunications engineering firms based in Brazil

Ranked by team size

Top 25 of 1,036 telecommunications engineering firms based in Brazil, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications 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	Serede	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 19, 2026	10001+	8,011 contacts →
	Indirect 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	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
3	B. Tobace Instalações Elétricas E Telefônicas Ltda	Indirect evidence	Jaboticabal, BrazilHQ checked Sep 19, 2026	1,001-5,000	478 contacts →
	Indirect evidence “B.” Source: RevenueBase Database · checked Sep 19, 2026
4	STN Empreendimentos E Construções	Indirect evidence	Areal, BrazilHQ checked Sep 19, 2026	501-1,000	471 contacts →
	Indirect evidence “A STN EMPREENDIMENTOS E CONSTRUÇÕES atua há mais de 30 anos nas áreas de engenharia elétrica, de eletromecânica e de engenharia civil em todo território nacional.” Source: RevenueBase Database · checked Sep 19, 2026
5	Icatel	Indirect evidence	Freguesia Do Ó, BrazilHQ checked Sep 19, 2026	201-500	405 contacts →
	Indirect evidence “Fundada em 1975, a ICATEL Telecomunicações Ltda é uma empresa especializada em Telefonia de Uso Público e de Soluções completas para Telecomunicações : Atuando nos segmentos de…” Source: RevenueBase Database · checked Sep 19, 2026
6	MY Business Ltda	Indirect evidence	Barueri, BrazilHQ checked Sep 19, 2026	201-500	362 contacts →
	Indirect evidence “A MY Business é uma empresa prestadora de serviços para telecomunicações, que atua no segmento de engenharia celular e TI, especializada na avaliação de qualidade dos serviços…” Source: RevenueBase Database · checked Sep 19, 2026
7	Radiante Engenharia DE Telecomunicações	Indirect evidence	Curitiba, BrazilHQ checked Sep 19, 2026	1,001-5,000	319 contacts →
	Indirect evidence “Radiante Engenharia, há mais de 30 anos, oferecendo a infraestrutura completa para operadoras e provedores.” Source: RevenueBase Database · checked Sep 19, 2026
8	Alcon Engenharia DE Sistemas	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	201-500	298 contacts →
	Indirect evidence “O nosso legado de excelência técnica e rigor em engenharia evoluiu.” Source: RevenueBase Database · checked Sep 19, 2026
9	Ultra Engenharia E Construções Ltda	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 19, 2026	501-1,000	262 contacts →
	Indirect evidence “A ULTRA ENERGIA LTDA é uma empresa de obras e serviços com atuação nos segmentos de Engenharia Elétrica, Eletrônica, Telecomunicações e Civil.” Source: RevenueBase Database · checked Sep 19, 2026
10	Infolink Telecom	Indirect evidence	Eusébio, BrazilHQ checked Sep 19, 2026	51-200	218 contacts →
	Indirect evidence “A INFOLINK TELECOM é uma empresa especializada em produtos e serviços de comunicação e tecnologia, presente no mercado desde 2004 com DNA de servir com qualidade e excelência…” Source: RevenueBase Database · checked Sep 19, 2026
11	ELO Telecomunicações E Construções Ltda	Indirect evidence	Aparecida De Goiania, BrazilHQ checked Sep 19, 2026	201-500	217 contacts →
	Indirect evidence “A ELO Telecomunicações e Construções Ltda é uma empresa especializada na prestação de serviços de transmissão nos seus mais variados campos.” Source: RevenueBase Database · checked Sep 19, 2026
12	Eletronet	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	51-200	207 contacts →
	Indirect evidence “LIGAR OS PONTOS.” Source: RevenueBase Database · checked Sep 19, 2026
13	Linko Group	Indirect evidence	Rio Das Ostras, BrazilHQ checked Sep 19, 2026	201-500	186 contacts →
	Indirect evidence “Linko is a company that was born with the purpose of providing the bases for the growth of internet providers.” Source: RevenueBase Database · checked Sep 19, 2026
14	Afline Manutenção E Instalação Ltda	Indirect evidence	Manaus, BrazilHQ checked Sep 19, 2026	201-500	154 contacts →
	Indirect evidence “Há 14 anos no mercado em prestações de serviços em Banda Larga, TV por assinatura, cabeamento estruturado, Call Center, proporcionando em atender melhor os cliente garantindo…” Source: RevenueBase Database · checked Sep 19, 2026
15	Hexait Service Solutions	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	201-500	149 contacts →
	Indirect evidence “A HexaIT Service Solutions é uma empresa especializada em serviços de Tecnologia da Informação, com foco principal em tecnologias de redes e telecomunicações, como Routing &…” Source: RevenueBase Database · checked Sep 19, 2026
16	Aquário	Indirect evidence	Maringá, BrazilHQ checked Sep 19, 2026	201-500	120 contacts →
	Indirect evidence “Aquário is a manufacturer of antennas and electronic products with more than 40 years of experience in the market.” Source: RevenueBase Database · checked Sep 19, 2026
17	Infratel	Indirect evidence	Pinhais, BrazilHQ checked Sep 19, 2026	51-200	118 contacts →
	Indirect evidence “A INFRATEL tem por foco a atuação em soluções turn-key em Engenharia e visa potencializar os negócios dos seus clientes garantindo que cada parceiro mantenha o devido foco em seu…” Source: RevenueBase Database · checked Sep 19, 2026
18	Iosi Energia	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	51-200	100 contacts →
	Indirect evidence “Com 25 anos de atuação no mercado, a Iosi Energia oferece serviços completos em engenharia elétrica, automação e telecomunicações, atendendo as principais demandas de usinas…” Source: RevenueBase Database · checked Sep 19, 2026
19	Softcomp Conectividade	Indirect evidence	Lauro De Freitas, BrazilHQ checked Sep 19, 2026	201-500	100 contacts →
	Indirect evidence “Softcomp Telecomunicações: Pioneirismo e Inovação em Conectividade Sobre Nós: Com 27 anos de experiência, a Softcomp Telecomunicações é uma destacada empresa brasileira no setor…” Source: RevenueBase Database · checked Sep 19, 2026
20	Coelho Tecnologia	Indirect evidence	Canaã Dos Carajás, BrazilHQ checked Sep 19, 2026	n/a	99 contacts →
	Indirect evidence “Coelho Tecnologia, empresa especializada em Projetos de Telecomunicações, Infra-estrutura de Cabeamento, Fibra-Ótica, Radio Enlace, Redes, Switch, Roteadores, Asterisk, MikroTik…” Source: RevenueBase Database · checked Sep 19, 2026
21	Grupo Plantão	Indirect evidence	Lauro De Freitas, BrazilHQ checked Sep 19, 2026	51-200	99 contacts →
	Indirect evidence “Prazer, somos o Grupo Plantão!” Source: RevenueBase Database · checked Sep 19, 2026
22	Gigacom DO Brasil	Indirect evidence	São Paulo, BrazilHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “A GigaCom do Brasil é uma empresa de engenharia de soluções com atuação destacada em dois segmentos: • Telecomunicações - há 20 anos vem construindo redes privadas de telecom para…” Source: RevenueBase Database · checked Sep 19, 2026
23	EXBIZ	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	51-200	85 contacts →
	Indirect evidence “Sua empresa precisa que vários aspectos aconteçam de maneira organizada para se manter eficiente e evoluir, e alguns deles dependem de fornecedores.” Source: RevenueBase Database · checked Sep 19, 2026
24	fundamentos.its	Partial evidence	São José Dos Campos, BrazilHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial evidence “Founded on 1997 to offer IT solutions Fundamentos IT’s has expanded its activities by developing and implementing Telecommunication projects to many corporations all over the…” Source: RevenueBase Database · checked Sep 19, 2026
25	VMAX	Indirect evidence	Itatiba, BrazilHQ checked Sep 19, 2026	51-200	81 contacts →
	Indirect evidence “VMAX Telecomunicações do Brasil é uma empresa que esta situada em Itatiba no Estado de São Paulo, oferecendo um portifólio repleto de soluções em Telecomunicações para os mercados…” 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: telecommunications 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 telecommunications engineering firms.
Partial evidence: Its own public description names part of telecommunications engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications 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 1,036 telecommunications engineering firms based in Brazil

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Telecommunications engineering firms based in Brazil at a glance

As of Sep 19, 2026

6.4%Verified-email coverage

35.3Average contacts per company

11-50Median size (employees)

17.7%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

452

11-50

396

51-200

129

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 1,036 companies.

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 telecommunications 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.
What qualifies: Companies headquartered in Brazil whose own description of what they do matches “telecommunications 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 telecommunications 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 telecommunications engineering firms, and records with no verified work email. Companies headquartered outside Brazil are excluded even when they keep an office there.
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, 2,343 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.

Telecommunications engineering firms by metro

Telecommunications engineering firms in Sao Paulo183
Telecommunications engineering firms in Rio De Janeiro76
Telecommunications engineering firms in Belo Horizonte55
Telecommunications engineering firms in Curitiba32
Telecommunications engineering firms in Campinas25

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 telecommunications 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 telecommunications engineering firms are there based in Brazil?

RevenueBase identified 1,036 telecommunications engineering firms headquartered in Brazil 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 city has the most telecommunications engineering firms?

Sao Paulo leads with 183 headquartered companies, followed by Rio De Janeiro (76) and Belo Horizonte (55).

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 2,343 verified decision-maker contacts tracked across these 1,036 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.