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Company profilezelenza.com ↗

Zelenza

Zelenza provides integrated ICT services, telecom network engineering, defense and security, and customer experience services.

IT Services and IT Consulting
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Headquarters
Madrid, Comunidad De Madrid, SpainSource: RevenueBaseRetrieved October 13, 2026
Employee range
1001 to 5000Source: RevenueBaseRetrieved October 13, 2026
Founded
1984Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
44 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Zelenza do?

Zelenza says it has operated for more than 40 years.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

Zelenza reports references in nearly all large Spanish companies and public bodies.

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

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BADGE PREVIEWZelenza listed #1 on Defense IT consulting firms, September 27, 2026Open the published source list.
Zelenza

#1 Defense IT consulting firms

Snapshot: September 27, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 1, 2026, September 5, 2026, September 11, 2026, September 15, 2026, September 18, 2026, September 20, 2026, September 25, 2026, September 26, 2026, September 27, 2026, September 28, 2026, September 29, 2026 and September 30, 2026. How the company lists are built.

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