Company lists · Data refreshed November 2026

Top 25 Systems integration contractors based in Portugal

RevenueBase identified 273 company matches for systems integration contractors associated with Portugal as of November 2026 and tracks 6,464 professional contacts across them, including 1,848 with verified work emails. Lisbon is the largest hub.

This list covers company matches for systems integration contractors associated with Portugal, 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 November 6, 2026.

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 Nov 6, 2026 How this list was built
273Companies
6,464Contacts tracked
1,848Verified emails
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The 25 largest systems integration contractors based in Portugal

Ranked by team size
Top 25 of 273 company matches for systems integration contractors based in Portugal, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLisbon, PortugalHQ recorded Nov 6, 2026201-5001,235 contacts →

Exact match

“GMS was established in early 2003 to provide strategic, business and IT consulting and changed its name to Maksen in December 2010.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLisbon, PortugalHQ recorded Nov 6, 20261,001-5,000649 contacts →

Exact match

“Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchLisbon, PortugalHQ recorded Nov 6, 2026201-500274 contacts →

Exact match

“Focused on technology consulting, IT and Telecommunications, we empower the business of our customers and feel their projects as our own.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchPorto Salvo, PortugalHQ recorded Nov 6, 2026201-500227 contacts →

Exact match

“Unipartner is a leading European IT consulting and systems integration company headquartered in Portugal, with operations spanning across multiple European countries including…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchPontinha, PortugalHQ recorded Nov 6, 20261,001-5,000222 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchVila Nova De Gaia, PortugalHQ recorded Nov 6, 2026201-500201 contacts →

Exact match

“This is our engineering of success, an act of future creation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchErmesinde, PortugalHQ recorded Nov 6, 202651-200136 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAveiro, PortugalHQ recorded Nov 6, 202651-200101 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPorto, PortugalHQ recorded Nov 6, 202651-20092 contacts →

Exact match

“A Decsis é uma empresa de tecnologia fundada em 1994 que ajuda empresas a prosperarem com soluções de TI personalizadas e confiáveis.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchErmesinde, PortugalHQ recorded Nov 6, 202651-20087 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchPorto Salvo, PortugalHQ recorded Nov 6, 202651-20085 contacts →

Exact match

“A GuestWorld é a parceira em gestão de talento para organizações que necessitam de escalar operações sem comprometer a qualidade ou a eficiência.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMatosinhos, PortugalHQ recorded Nov 6, 2026201-50083 contacts →

Exact match

“ITGest is an international technology and information systems company, specialised in digital transformation projects across different industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPorto, PortugalHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“Optimizer is an IT service and information systems company focused on providing complementary services in the information technology sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMaia, PortugalHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMatosinhos, PortugalHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“At ORBCOM, we are passionate about technology and innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLeiria, PortugalHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Na Arentia capacitamos empresas para gerir melhor a sua operação através da tecnologia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLisbon, PortugalHQ recorded Nov 6, 2026n/a67 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchErmesinde, PortugalHQ recorded Nov 6, 202651-20060 contacts →

Exact match

“APR was founded in 1992 with the objective of providing high quality IT services, driving their activities exclusively for the business sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchPorto, PortugalHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“A oferta da Divultec é centrada na Integração de Sistemas, oferecendo soluções de backup, comunicações, segurança, infraestruturas de servidores e armazenamento, virtualização…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchLisbon, PortugalHQ recorded Nov 6, 2026201-50049 contacts →

Exact match

“Inspiring Solutions is a company that operates in the Information Technology Integration market, offering its customers a portfolio of innovative solutions and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchCoimbra, PortugalHQ recorded Nov 6, 202611-5044 contacts →

Exact match

“OneSource is an IT company specialized in the fields of data communications, security, networking and systems management, including the consultancy, auditing, design, development…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchLisbon, PortugalHQ recorded Nov 6, 202611-5042 contacts →

Exact match

“HeraPrime is the technology consultancy that implements and supports Cegid Primavera for Portuguese SMEs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchLisbon, PortugalHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“A Sendys é uma consultora tecnológica que se dedica ao desenvolvimento, manutenção, comercialização e suporte de soluções de gestão para pequenas, médias e grandes empresas, com…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchLisbon, PortugalHQ recorded Nov 6, 2026501-1,00039 contacts →

Exact match

“A Ten Twenty One faz agora parte da Claranet Portugal, líder em serviços de TI no país.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchFaro, PortugalHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“W4M Digital Solutions provides personalized and affordable technology solutions for public and private organizations across sectors such as automotive, banking, culture…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 273 systems integration contractors based in Portugal

See the full list, filter by size, metro and specialty, and access 1,848 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Systems integration contractors based in Portugal at a glance

As of Nov 6, 2026
28.6%Verified-email coverage
23.7Average contacts per company
11-50Median size (employees)
23.1%Largest-city concentration · Lisbon
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
133
11-50
90
51-200
34
201-500
9
501-1,000
1
1,001-5,000
3
10001+
1

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 273 companies.

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.
What qualifies
Company records associated with Portugal whose business descriptions match “systems integration contractors” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,848 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 November 6, 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.

Systems integration contractors by metro

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 “systems integration contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many systems integration contractors are there based in Portugal?

RevenueBase identified 273 company matches for systems integration contractors associated with Portugal as of November 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?

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

Which city has the most systems integration contractors?

Lisbon leads with 63 company records, followed by Porto (12) and Coimbra (11).

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 1,848 professional contacts with verified work emails tracked across these 273 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 November 6, 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.