Company lists · Data refreshed September 2026

Top 25 Environmental engineering staffing companies based in Spain

Name: Environmental engineering staffing companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 380 companies tracked

RevenueBase identified 380 environmental engineering staffing companies headquartered in Spain as of September 2026 and tracks 5,237 professional contacts across them, including 490 with verified work emails. Madrid is the largest hub.

This list covers environmental engineering staffing companies headquartered in Spain, 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

380Companies

5,237Contacts tracked

490Verified emails

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The 25 largest environmental engineering staffing companies based in Spain

Ranked by team size

Top 25 of 380 environmental engineering staffing companies based in Spain, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental engineering staffing companies: 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	Inerco	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	1,001-5,000	688 contacts →
	Indirect evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 28, 2026
2	Amphos 21	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	201-500	418 contacts →
	Indirect evidence “Founded in 1994, in Barcelona, Spain, Amphos21 includes three companies in Spain (1994), Chile (2009) and Peru (2012).” Source: RevenueBase Database · checked Sep 28, 2026
3	Iplan Gestión Integral	Strong evidence	Barcelona, SpainHQ checked Sep 28, 2026	501-1,000	363 contacts →
	Strong evidence “Iplan is a company related to the engineering services of projects developed mainly in the energy sector, civil works, renewable energies and environment.” Source: RevenueBase Database · checked Sep 28, 2026
4	Ecointegral Ingeniería, SL	Strong evidence	Córdoba, SpainHQ checked Sep 28, 2026	201-500	234 contacts →
	Strong evidence “ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Source: RevenueBase Database · checked Sep 28, 2026
5	Antea Group España Y Latinoamérica	Indirect evidence	A Coruña, SpainHQ checked Sep 28, 2026	51-200	133 contacts →
	Indirect evidence “Desde su fundación en A Coruña en el año 1985 ICEACSA se ha posicionado en el mercado español como una consultora pionera y líder en el desarrollo integral de proyectos en los…” Source: RevenueBase Database · checked Sep 28, 2026
6	Urci Consultores	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	201-500	106 contacts →
	Indirect evidence “Desde sus inicios, URCI participó activamente en el desarrollo de las infraestructuras viarias, ferroviarias, portuarias y aeroportuarias construidas en España por el gobierno, y…” Source: RevenueBase Database · checked Sep 28, 2026
7	Azcatec Tecnología E Ingeniería	Strong evidence	Sevilla, SpainHQ checked Sep 28, 2026	51-200	98 contacts →
	Strong evidence “AZCATEC It is the tool for a group of well-organized professional engineers and experts in the development of industrial plants, energy and environmental engineering have to…” Source: RevenueBase Database · checked Sep 28, 2026
8	Litoclean	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence “Litoclean es una consultora medioambiental experta en el desarrollo de proyectos de investigación y descontaminación de suelos.” Source: RevenueBase Database · checked Sep 28, 2026
9	Tresca Ingeniería, S.A	Indirect evidence	Léon, SpainHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect evidence “Tresca Ingeniería nace en 2001, ofreciendo a sus clientes servicios de ingeniería y consultoría en los sectores industrial, terciario y residencial.” Source: RevenueBase Database · checked Sep 28, 2026
10	Iddtek	Indirect evidence	Derio, SpainHQ checked Sep 28, 2026	51-200	77 contacts →
	Indirect evidence “Ayudamos desde 2004 a Empresas Industriales en sus necesidades de Outsourcing y Selección de Ingenieros y Personal Técnico para alcanzar los objetivos en sus proyectos.” Source: RevenueBase Database · checked Sep 28, 2026
11	Keyjob ETT	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	201-500	67 contacts →
	Indirect evidence “Somos un equipo de profesionales con más de 20 años de experiencia en ETT.” Source: RevenueBase Database · checked Sep 28, 2026
12	Tauw Iberia	Strong evidence	Madrid, SpainHQ checked Sep 28, 2026	51-200	65 contacts →
	Strong evidence “Tauw Iberia is an independent environmental consultancy and engineering company established in 1989.” Source: RevenueBase Database · checked Sep 28, 2026
13	Civile	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	11-50	65 contacts →
	Indirect evidence “Civile es una empresa de ingeniería, consultoría y formación, dentro del ámbito civil, medioambiental, agronómico y forestal, que pone a disposición del cliente, público y…” Source: RevenueBase Database · checked Sep 28, 2026
14	Veringer Engineering	Partial evidence	Santander, SpainHQ checked Sep 28, 2026	201-500	52 contacts →
	Partial evidence “Vèringer Engineering is a consultancy specialized in engineering talent solutions for complex industrial and energy projects worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
15	Axiom Ingeniería	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	51-200	51 contacts →
	Indirect evidence “AXIOM ha sido constituida como consecuencia de la unión de un grupo de técnicos cualificados, provenientes de diferentes empresas de servicios, con especializaciones en…” Source: RevenueBase Database · checked Sep 28, 2026
16	ABM Serveis D Enginyeria I Consulting S.L	Partial evidence	Riudellots De La Selva, SpainHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “ABM Consulting is a consulting and engineering services company with over 20 years of experience.” Source: RevenueBase Database · checked Sep 28, 2026
17	Inncive	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	51-200	45 contacts →
	Indirect evidence “Constituida en el año INNOVACIÓN CIVIL ESPAÑOLA, S.L es una empresa de Ingeniería y Consultoría especializada en el campo de la Ingeniería Sanitaria y Medioambiental.” Source: RevenueBase Database · checked Sep 28, 2026
18	Intacta Gestión Ambiental	Indirect evidence	As Pontes De García Rodríguez, SpainHQ checked Sep 28, 2026	11-50	45 contacts →
	Indirect evidence “Intacta surge como una sinergia que une la participación activa y concertada para alcanzar una eficacia total y garantizar cualquier servicio medioambiental, pero con ella nace…” Source: RevenueBase Database · checked Sep 28, 2026
19	IGM Ingenieria Y Gestión Medioambiental	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	201-500	44 contacts →
	Indirect evidence “Nuestra historia comienza en Febrero de 1997, cuando IGM es fundada para dar solución a problemas relacionados con el medio natural.” Source: RevenueBase Database · checked Sep 28, 2026
20	Esolve. Environmental Consulting And Engineering	Strong evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	35 contacts →
	Strong evidence “ESOLVE is an environmental consulting and engineering company that provides a wide range of professional services to private sector companies and public organizations for the…” Source: RevenueBase Database · checked Sep 28, 2026
21	Extrepronatur SL	Indirect evidence	Badajoz, SpainHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “EXTREPRONATUR SL es una consultora medioambiental y servicios AVENIDA JUAN PEREDA PILA, 1, BADAJOZ, Badajoz, Spain.” Source: RevenueBase Database · checked Sep 28, 2026
22	Idom Environment	Partial evidence	Bilbao, SpainHQ checked Sep 28, 2026	1,001-5,000	27 contacts →
	Partial evidence “IDOM is an international firm of independent professional services in the fields of engineering, consulting and architecture, backed by an experience that goes back to 1957, the…” Source: RevenueBase Database · checked Sep 28, 2026
23	Dinotec	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “DINOTEC Sociedad de Aguas y Medio Ambiente S.L.” Source: RevenueBase Database · checked Sep 28, 2026
24	Consulnima	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Consultoría e ingeniería ambiental.” Source: RevenueBase Database · checked Sep 28, 2026
25	Consultoría DE Técnicas Ambientales	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Consultoría de Técnicas Ambientales is an independent company dedicated to monitoring, control, advice and environmental consulting; providing its service, both to the public and…” 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: environmental engineering staffing companies. 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 environmental engineering staffing companies.
Partial evidence: Its own public description names part of environmental engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental engineering staffing companies. 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 380 environmental engineering staffing companies based in Spain

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Environmental engineering staffing companies based in Spain at a glance

As of Sep 28, 2026

9.4%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

14.7%Largest-city concentration · Madrid

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

223

11-50

112

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 380 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 environmental engineering staffing companies, 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 Spain whose own description of what they do matches “environmental engineering staffing companies”. 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 environmental engineering staffing companies), 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 environmental engineering staffing companies, and records with no verified work email. Companies headquartered outside Spain 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, 490 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.

Environmental engineering staffing companies by metro

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 environmental engineering staffing companies, 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 environmental engineering staffing companies are there based in Spain?

RevenueBase identified 380 environmental engineering staffing companies headquartered in Spain 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?

Inerco, headquartered in Sevilla, tops this list with the largest team on record.

Which city has the most environmental engineering staffing companies?

Madrid leads with 56 headquartered companies, followed by Barcelona (34) and Valencia (16).

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 490 verified decision-maker contacts tracked across these 380 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.