Company lists · Data refreshed September 2026

Top 25 IT systems integration firms based in Portugal

Name: IT systems integration firms based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 238 companies tracked

RevenueBase identified 238 IT systems integration firms headquartered in Portugal as of September 2026 and tracks 5,759 professional contacts across them, including 1,620 with verified work emails. Lisboa is the largest hub.

This list covers IT systems integration firms 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 28, 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 28, 2026 86% judged on-target in blind review

238Companies

5,759Contacts tracked

1,620Verified emails

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The 25 largest IT systems integration firms based in Portugal

Ranked by team size

Top 25 of 238 IT systems integration firms based in Portugal, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to IT systems integration 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	Noesis	Indirect evidence	Lisbon, PortugalHQ checked Sep 28, 2026	1,001-5,000	1,220 contacts →
	Indirect evidence “Noesis is an international tech consulting company with 30 years of experience, delivering solutions to drive digital transformation and support business growth.” Source: RevenueBase Database · checked Sep 28, 2026
2	Aubay Portugal	Indirect evidence	Lisboa, PortugalHQ checked Sep 28, 2026	1,001-5,000	787 contacts →
	Indirect evidence “Somos a Aubay Portugal, uma empresa de consultoria em Tecnologias de Informação e parceiro estratégico que ajuda organizações a acelerar a sua transformação digital através de…” Source: RevenueBase Database · checked Sep 28, 2026
3	Timestamp	Strong evidence	Lisboa, PortugalHQ checked Sep 28, 2026	1,001-5,000	582 contacts →
	Strong evidence “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Source: RevenueBase Database · checked Sep 28, 2026
4	Unipartner	Strong evidence	Porto Salvo, PortugalHQ checked Sep 28, 2026	201-500	216 contacts →
	Strong evidence “Unipartner is a leading European IT consulting and systems integration company headquartered in Portugal, with operations spanning across multiple European countries including…” Source: RevenueBase Database · checked Sep 28, 2026
5	Polarising	Indirect evidence	Lisbon, PortugalHQ checked Sep 28, 2026	201-500	207 contacts →
	Indirect evidence “Polarising is a tech company specialized in Boomi, TIBCO, MuleSoft (Salesforce) and the Spring framework.” Source: RevenueBase Database · checked Sep 28, 2026
6	SYONE	Indirect evidence	Alfragide, PortugalHQ checked Sep 28, 2026	201-500	138 contacts →
	Indirect evidence “Syone is Portugal's leading open source provider.” Source: RevenueBase Database · checked Sep 28, 2026
7	Securnet	Indirect evidence	Ermesinde, PortugalHQ checked Sep 28, 2026	51-200	129 contacts →
	Indirect evidence “Fundada em 2002, a SECURNET dedica-se à integração de tecnologias de informação, prestando um conjunto de serviços técnicos especializados de consultoria e auditoria, engenharia…” Source: RevenueBase Database · checked Sep 28, 2026
8	Decsis Sistemas DE Informação	Indirect evidence	Porto, PortugalHQ checked Sep 28, 2026	51-200	105 contacts →
	Indirect evidence “A Decsis é uma empresa de tecnologia fundada em 1994 que ajuda empresas a prosperarem com soluções de TI personalizadas e confiáveis.” Source: RevenueBase Database · checked Sep 28, 2026
9	RIS 2048	Partial evidence	Aveiro, PortugalHQ checked Sep 28, 2026	51-200	97 contacts →
	Partial evidence “RIS 2048 is a society constituted in the year to aggregate into a single structure the activity of several information systems companies that operated in Portugal’s Northern…” Source: RevenueBase Database · checked Sep 28, 2026
10	Samsys	Partial evidence	Ermesinde, PortugalHQ checked Sep 28, 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 28, 2026
11	Itgest Portugal	Partial evidence	Matosinhos, PortugalHQ checked Sep 28, 2026	201-500	82 contacts →
	Partial evidence “ITGest is an international technology and information systems company, specialised in digital transformation projects across different industries.” Source: RevenueBase Database · checked Sep 28, 2026
12	Optimizer	Strong evidence	Porto, PortugalHQ checked Sep 28, 2026	51-200	81 contacts →
	Strong evidence “Optimizer is an IT service and information systems company focused on providing complementary services in the information technology sector.” Source: RevenueBase Database · checked Sep 28, 2026
13	Laxton	Partial evidence	Santa Maria Da Feira, PortugalHQ checked Sep 28, 2026	201-500	78 contacts →
	Partial evidence “Laxton is a leading Identity Systems Integrator for governments and organisations worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
14	C2b Consulting	Indirect evidence	Maia, PortugalHQ checked Sep 28, 2026	51-200	74 contacts →
	Indirect evidence “C2B Consulting like any other consulting company represents a group of professionals that are keen to provide the best solutions to our present and future customers/partners.” Source: RevenueBase Database · checked Sep 28, 2026
15	IT Consulting	Partial evidence	Lisboa, PortugalHQ checked Sep 28, 2026	n/a	72 contacts →
	Partial evidence “A IT Consulting é uma empresa que constrói soluções eficientes nas áreas das tecnologias de informação contribuindo para o desenvolvimento e continuidade do seu negócio.” Source: RevenueBase Database · checked Sep 28, 2026
16	Arentia, S.A	Indirect evidence	Leiria, PortugalHQ checked Sep 28, 2026	51-200	68 contacts →
	Indirect evidence “Na Arentia capacitamos empresas para gerir melhor a sua operação através da tecnologia.” Source: RevenueBase Database · checked Sep 28, 2026
17	Divultec	Indirect evidence	Porto, PortugalHQ checked Sep 28, 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 28, 2026
18	Inspiring Solutions	Partial evidence	Lisboa, PortugalHQ checked Sep 28, 2026	201-500	46 contacts →
	Partial evidence “Inspiring Solutions is a company that operates in the Information Technology Integration market, offering its customers a portfolio of innovative solutions and services.” Source: RevenueBase Database · checked Sep 28, 2026
19	Lynxmind	Partial evidence	Lisboa, PortugalHQ checked Sep 28, 2026	11-50	44 contacts →
	Partial evidence “Lynxmind is a Portuguese IT consulting company operating internationally, with offices in Dubai, Brazil and the UK.” Source: RevenueBase Database · checked Sep 28, 2026
20	Pamafe It, A Ricoh Company	Partial evidence	PortugalHQ checked Sep 28, 2026	51-200	37 contacts →
	Partial evidence “Pamafe IT was set in 1998, bringing to the market a new and integrated business solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Compuworks	Partial evidence	Lisboa, PortugalHQ checked Sep 28, 2026	51-200	37 contacts →
	Partial evidence “We work, IT works.” Source: RevenueBase Database · checked Sep 28, 2026
22	Apside Portugal	Indirect evidence	Aveiro, PortugalHQ checked Sep 28, 2026	1,001-5,000	33 contacts →
	Indirect evidence “Apside is a technology consulting company providing expertise and guidance to its clients and partners with more than employees over 6 countries.” Source: RevenueBase Database · checked Sep 28, 2026
23	Active SYS	Indirect evidence	Matosinhos, PortugalHQ checked Sep 28, 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 28, 2026
24	Wrightia	Indirect evidence	165, PortugalHQ checked Sep 28, 2026	51-200	31 contacts →
	Indirect evidence “Wrightia is a thriving community of highly skilled experts passionate about delivering impactful solutions that address real-world problems and endure over time.” Source: RevenueBase Database · checked Sep 28, 2026
25	Plexus	Indirect evidence	Vila Nova De Santo André, PortugalHQ checked Sep 28, 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 28, 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: IT systems integration 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 IT systems integration firms.
Partial evidence: Its own public description names part of IT systems integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT systems integration 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 238 IT systems integration firms based in Portugal

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IT systems integration firms based in Portugal at a glance

As of Sep 28, 2026

28.1%Verified-email coverage

24.2Average contacts per company

11-50Median size (employees)

18.1%Largest-city concentration · Lisboa

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

116

11-50

51-200

201-500

1,001-5,000

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 238 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 IT systems integration 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 Portugal whose own description of what they do matches “IT systems integration 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 IT systems integration 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 IT systems integration firms, 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, 1,620 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 28, 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.

IT systems integration firms by metro

IT systems integration firms in Lisboa43

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 IT systems integration 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 IT systems integration firms are there based in Portugal?

RevenueBase identified 238 IT systems integration firms 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?

Noesis, headquartered in Lisboa, tops this list with the largest team on record.

Which city has the most IT systems integration firms?

Lisboa leads with 43 headquartered companies, followed by Lisbon (15) and Porto (9).

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 1,620 verified decision-maker contacts tracked across these 238 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 28, 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.