Company lists · Data refreshed September 2026

Top 25 Telecom systems integrators based in Portugal

Name: Telecom systems integrators based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 102 companies tracked

RevenueBase identified 102 telecom systems integrators headquartered in Portugal as of September 2026 and tracks 1,839 professional contacts across them, including 479 with verified work emails. Lisbon is the largest hub.

This list covers telecom systems integrators headquartered in Portugal, 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 29, 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 29, 2026 86% judged on-target in blind review

102Companies

1,839Contacts tracked

479Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest telecom systems integrators based in Portugal

Ranked by team size

Top 25 of 102 telecom systems integrators based in Portugal, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to telecom systems integrators: 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	Telcabo S.A	Partial evidence	Lisbon, PortugalHQ checked Sep 29, 2026	1,001-5,000	313 contacts →
	Partial evidence “Telcabo, established in 1986, is a leading Telecommunications and Energy Services Provider with a global and complete End-to-End offer aimed to meet the most demanding customers.” Source: RevenueBase Database · checked Sep 29, 2026
2	Futurcabo	Indirect evidence	Carnaxide, PortugalHQ checked Sep 29, 2026	201-500	217 contacts →
	Indirect evidence “A Futurcabo é uma empresa fundada em 1997, e com experiência comprovada como “Service Provider Global” da NOS nos Sistemas de Televisão e Internet.” Source: RevenueBase Database · checked Sep 29, 2026
3	Sinalcabo	Partial evidence	Sintra, PortugalHQ checked Sep 29, 2026	501-1,000	134 contacts →
	Partial evidence “A SINALCABO iniciou a sua atividade em 1996 no sector das Telecomunicações, sendo a empresa mais antiga do Grupo, o qual integra também a Sinaltech (Soluções ICT Empresariais) e a…” Source: RevenueBase Database · checked Sep 29, 2026
4	Prosonic S.A	Indirect evidence	Lisbon, PortugalHQ checked Sep 29, 2026	51-200	103 contacts →
	Indirect evidence “Quem Somos: A PROSONIC é uma empresa de prestigiado nível nacional, com a Certificação de Qualidade ISO 9001:2008, com instalações em Lisboa no Taguspark, estando também presente…” Source: RevenueBase Database · checked Sep 29, 2026
5	Samsys	Partial evidence	Ermesinde, PortugalHQ checked Sep 29, 2026	51-200	86 contacts →
	Partial evidence “Having a close relationship with our partners, in Samsys we are dedicated to the delivery and implementation of information systems suited to the specific needs of each business.” Source: RevenueBase Database · checked Sep 29, 2026
6	Setling	Partial evidence	Sacavém, PortugalHQ checked Sep 29, 2026	51-200	51 contacts →
	Partial evidence “Somos uma empresa de telecomunicações, muito focados em soluções chave-na-mão de redes fixas (HFC, FTTx) e móveis (GSM/ UMTS/ WCDMA e Wi-Fi).” Source: RevenueBase Database · checked Sep 29, 2026
7	SDT Electrónica	Indirect evidence	Lisbon, PortugalHQ checked Sep 29, 2026	51-200	51 contacts →
	Indirect evidence “Given its experience and know-how, acquired over more than 40 years since its founding, SDT has the ability to offer, integrate and manage Networks, Devices, IT and Energy…” Source: RevenueBase Database · checked Sep 29, 2026
8	Divultec	Indirect evidence	Porto, PortugalHQ checked Sep 29, 2026	51-200	50 contacts →
	Indirect evidence “A oferta da Divultec é centrada na Integração de Sistemas, oferecendo soluções de backup, comunicações, segurança, infraestruturas de servidores e armazenamento, virtualização…” Source: RevenueBase Database · checked Sep 29, 2026
9	Roundb Engineering	Partial evidence	Lisbon, PortugalHQ checked Sep 29, 2026	51-200	46 contacts →
	Partial evidence “RoundB is an Engineering company founded in 2015, operating in the telecommunications sector.” Source: RevenueBase Database · checked Sep 29, 2026
10	Globaleda.S.A	Indirect evidence	Ponta Delgada, PortugalHQ checked Sep 29, 2026	51-200	44 contacts →
	Indirect evidence “A GLOBALEDA, criada em 1997, contando atualmente com cerca de 100 colaboradores, é uma empresa empreendedora e de base tecnológica, na área da engenharia dos sistemas de…” Source: RevenueBase Database · checked Sep 29, 2026
11	Onesource, Consultoria Informática LDA	Partial evidence	Coimbra, PortugalHQ checked Sep 29, 2026	11-50	43 contacts →
	Partial evidence “OneSource is an IT company specialized in the fields of data communications, security, networking and systems management, including the consultancy, auditing, design, development…” Source: RevenueBase Database · checked Sep 29, 2026
12	Acitel	Partial evidence	São Domingos De Rana, PortugalHQ checked Sep 29, 2026	11-50	41 contacts →
	Partial evidence “ACITEL 4 - SERVIÇOS DE TELECOMUNICAÇÕES, S.A, Empresa integrada no Grupo ACITEL, com 30 anos de experiência no Mercado de Telecomunicações, tem conquistado uma posição de…” Source: RevenueBase Database · checked Sep 29, 2026
13	Active SYS	Indirect evidence	Matosinhos, PortugalHQ checked Sep 29, 2026	11-50	31 contacts →
	Indirect evidence “Project started in 2017 and developed by experienced professionals in the area of information technologies, with deep knowledge of the national and international market, having…” Source: RevenueBase Database · checked Sep 29, 2026
14	Plexus	Indirect evidence	Vila Nova De Santo André, PortugalHQ checked Sep 29, 2026	11-50	31 contacts →
	Indirect evidence “A PLEXUS é uma empresa que se especializou no campo da integração de sistemas, que consiste na ligação de vários sistemas autónomos uns aos outros, de forma a que aparentem e se…” Source: RevenueBase Database · checked Sep 29, 2026
15	Netlink S.A	Partial evidence	Sintra, PortugalHQ checked Sep 29, 2026	201-500	20 contacts →
	Partial evidence “A Netlink tem um conhecimento alargado no setor das telecomunicações, possibilitando a apresentação de soluções integradas nas fases de projeto, planeamento, instalação e…” Source: RevenueBase Database · checked Sep 29, 2026
16	Sysconnect	Indirect evidence	Maia, PortugalHQ checked Sep 29, 2026	11-50	18 contacts →
	Indirect evidence “SYSCONNECT integrates the best and most sophisticated IT and communication technologies in the market, in order to create mechanisms and processes that cross the organizations…” Source: RevenueBase Database · checked Sep 29, 2026
17	TKT Serviços DE Telecomunicações, LDA	Partial evidence	Lisbon, PortugalHQ checked Sep 29, 2026	11-50	18 contacts →
	Partial evidence “TKT Services is the latest TKT Group company, focused on providing services in the Telecommunications and Multimedia area.” Source: RevenueBase Database · checked Sep 29, 2026
18	Indutora	Partial evidence	Funchal, PortugalHQ checked Sep 29, 2026	51-200	16 contacts →
	Partial evidence “Instalações Eléctricas e de Telecomunicações” Source: RevenueBase Database · checked Sep 29, 2026
19	Noshut, LDA	Indirect evidence	Vila Do Conde, PortugalHQ checked Sep 29, 2026	1-10	13 contacts →
	Indirect evidence “Founded in 2018, we are a service company in the area of Information and Communication Technologies.” Source: RevenueBase Database · checked Sep 29, 2026
20	Solvit	Indirect evidence	Angra Do Heroismo, PortugalHQ checked Sep 29, 2026	11-50	13 contacts →
	Indirect evidence “Engineering services.” Source: RevenueBase Database · checked Sep 29, 2026
21	Rederia Innovation	Partial evidence	Vagos, PortugalHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “We established in 1995 focusing our activities in providing services, implementing projects, installation and maintenance of telecommunication, telemetry and control networks.” Source: RevenueBase Database · checked Sep 29, 2026
22	Trustvision	Indirect evidence	Viseu, PortugalHQ checked Sep 29, 2026	1-10	10 contacts →
	Indirect evidence “A empresa é reconhecida pela qualidade dos serviços e recursos humanos, assume-se com uma fortíssima vertente de conceção, venda e implementação de soluções integradas, vertente…” Source: RevenueBase Database · checked Sep 29, 2026
23	Techbase	Indirect evidence	Braga, PortugalHQ checked Sep 29, 2026	1-10	10 contacts →
	Indirect evidence “A TECHBASE é uma marca pertencente à MENDES L.” Source: RevenueBase Database · checked Sep 29, 2026
24	Espectro Sistemas DE Informação SA	Indirect evidence	Coimbra, PortugalHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Data da fundação: 1993/08/01 Colaboradores: 24 Instalações: Sede em Coimbra e escritório em Lisboa (ver contactos) Facturação em 2010: Certificações: ISO 9001, PME EXCELÊNCIA…” Source: RevenueBase Database · checked Sep 29, 2026
25	Proxsys Solutions	Indirect evidence	Ermesinde, PortugalHQ checked Sep 29, 2026	11-50	8 contacts →
	Indirect evidence “A PROXSYS SOLUTIONS é uma empresa integradora de soluções tecnológicas, com vasta experiência na área de Sistemas de Informação e Segurança.” Source: RevenueBase Database · checked Sep 29, 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 systems integrators. 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 systems integrators.
Partial evidence: Its own public description names part of telecom systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecom systems integrators. 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 102 telecom systems integrators based in Portugal

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 479 reachable decision-makers.

Free signup · no credit card

View the full list →

Telecom systems integrators based in Portugal at a glance

As of Sep 29, 2026

26.0%Verified-email coverage

18.0Average contacts per company

11-50Median size (employees)

10.8%Largest-city concentration · Lisbon

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 102 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 telecom systems integrators, 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 Portugal whose own description of what they do matches “telecom systems integrators”. 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 systems integrators), 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 systems integrators, and records with no verified work email. Companies headquartered outside Portugal 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, 479 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 29, 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.

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 systems integrators, 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 systems integrators are there based in Portugal?

RevenueBase identified 102 telecom systems integrators headquartered in Portugal 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?

Telcabo S.A, headquartered in Alenquer, tops this list with the largest team on record.

Which city has the most telecom systems integrators?

Lisbon leads with 11 headquartered companies, followed by Porto (8) and Coimbra (6).

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 479 verified decision-maker contacts tracked across these 102 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 102 telecom systems integrators based in Portugal. Start with a free account, no credit card.

Download this list →

Related lists

Telecom systems integrators by geography

Browse the directory

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.