Company lists · Data refreshed September 2026

Top 25 Infrastructure consulting firms based in France

Name: Infrastructure consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 3,177 companies tracked

RevenueBase identified 3,177 infrastructure consulting firms headquartered in France as of September 2026 and tracks 109,718 professional contacts across them, including 34,629 with verified work emails and 2,017 with mobile numbers. Paris is the largest hub.

This list covers infrastructure consulting firms headquartered in France, 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 3, 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 3, 2026 86% judged on-target in blind review

3,177Companies

109,718Contacts tracked

34,629Verified emails

2,017Mobile numbers

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The 25 largest infrastructure consulting firms based in France

Ranked by team size

Top 25 of 3,177 infrastructure consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure consulting 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	EGIS	Partial evidence	FranceHQ checked Sep 3, 2026	10001+	11,761 contacts →
	Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 3, 2026
2	COLAS	Partial evidence	Paris, FranceHQ checked Sep 3, 2026	10001+	9,892 contacts →
	Partial evidence “Colas, a subsidiary of the Bouygues Group, is a major player in the construction and maintenance of transportation infrastructure and urban development.” Source: RevenueBase Database · checked Sep 3, 2026
3	Altran	Indirect evidence	Neuilly-Sur-Seine, FranceHQ checked Sep 3, 2026	10001+	6,481 contacts →
	Indirect evidence “Altran is now Capgemini Engineering.” Source: RevenueBase Database · checked Sep 3, 2026
4	Systra	Indirect evidence	Paris, FranceHQ checked Sep 3, 2026	10001+	5,087 contacts →
	Indirect evidence “SYSTRA is one of the world's leading engineering and consultancy groups specialising in public transport and mobility solutions.” Source: RevenueBase Database · checked Sep 3, 2026
5	Artelia	Indirect evidence	Saint-Ouen, FranceHQ checked Sep 3, 2026	5,001-10,000	4,669 contacts →
	Indirect evidence “Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.” Source: RevenueBase Database · checked Sep 3, 2026
6	SADE	Partial evidence	FranceHQ checked Sep 3, 2026	5,001-10,000	2,516 contacts →
	Partial evidence “RESEAUX ET INFRASTRUCTURES Entreprise plus que centenaire forte de quelque 7 collaborateurs, la SADE est le spécialiste de la conception, la construction, la réhabilitation et…” Source: RevenueBase Database · checked Sep 3, 2026
7	Ingérop	Indirect evidence	Rueil-Malmaison, FranceHQ checked Sep 3, 2026	1,001-5,000	2,049 contacts →
	Indirect evidence “Ingerop is an independent engineering company employing 3 500 people and with its head offices in Rueil-Malmaison (France).” Source: RevenueBase Database · checked Sep 3, 2026
8	Vulcain Engineering Group	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 3, 2026	5,001-10,000	1,484 contacts →
	Indirect evidence “Vulcain Ingénierie est depuis plusieurs années un acteur incontournable du conseil en ingénierie dédié aux secteurs de l’énergie et de l’environnement.” Source: RevenueBase Database · checked Sep 3, 2026
9	Soletanche Bachy	Indirect evidence	Rueil-Malmaison, FranceHQ checked Sep 3, 2026	5,001-10,000	1,211 contacts →
	Indirect evidence “Soletanche Bachy is a world benchmark in foundations and soil technologies, and is involved in over projects every year.” Source: RevenueBase Database · checked Sep 3, 2026
10	BTP Consultants	Indirect evidence	Montigny-le-bretonneux, FranceHQ checked Sep 3, 2026	201-500	1,069 contacts →
	Indirect evidence “BTP Consultants est un bureau de ̂, et présent à l'échelle nationale depuis plus de.” Source: RevenueBase Database · checked Sep 3, 2026
11	AUSY	Indirect evidence	Sèvres Cedex, FranceHQ checked Sep 3, 2026	5,001-10,000	1,062 contacts →
	Indirect evidence “The story of AUSY by Randstad started in France in 1989.” Source: RevenueBase Database · checked Sep 3, 2026
12	T&s Technology & Strategy	Indirect evidence	Schiltigheim, FranceHQ checked Sep 3, 2026	1,001-5,000	946 contacts →
	Indirect evidence “Fondée en 2008, T&S est une entreprise spécialisée dans l'ingénierie, le digital et le conseil.” Source: RevenueBase Database · checked Sep 3, 2026
13	Antea Group - France	Indirect evidence	Olivet, FranceHQ checked Sep 3, 2026	1,001-5,000	773 contacts →
	Indirect evidence “Antea Group est une société internationale d’ingénierie et de conseil en environnement.” Source: RevenueBase Database · checked Sep 3, 2026
14	Parlym	Indirect evidence	Marseille, FranceHQ checked Sep 3, 2026	1,001-5,000	732 contacts →
	Indirect evidence “For over 50 years the Parlym Group has managed to establish itself as a major player in industrial engineering all over the world.” Source: RevenueBase Database · checked Sep 3, 2026
15	Groupe Intm	Indirect evidence	Levallois-Perret, FranceHQ checked Sep 3, 2026	1,001-5,000	716 contacts →
	Indirect evidence “Le Groupe INTM est une société de conseil et de services en ingénierie numérique, dont le positionnement s'inscrit depuis plusieurs années dans une volonté de proximité, d'écoute…” Source: RevenueBase Database · checked Sep 3, 2026
16	Ramery	Indirect evidence	Erquinghem Lys, FranceHQ checked Sep 3, 2026	1,001-5,000	668 contacts →
	Indirect evidence “Maîtrisant toutes les étapes liées à la construction routière et à l’aménagement urbain, Ramery Travaux Publics est une référence dans le Nord de la France.” Source: RevenueBase Database · checked Sep 3, 2026
17	Sixense Group	Partial evidence	Rueil Malmaison, FranceHQ checked Sep 3, 2026	501-1,000	664 contacts →
	Partial evidence “At Sixense, our mission is to monitor the condition and behaviour of construction sites, buildings and infrastructure assets, optimise maintenance and allow continuity of…” Source: RevenueBase Database · checked Sep 3, 2026
18	Aptiskills	Indirect evidence	92300 Levallois Perret, FranceHQ checked Sep 3, 2026	1,001-5,000	659 contacts →
	Indirect evidence “Depuis sa création en 2013, AptiSkills s’est imposée comme un acteur de référence avec plus de 10 agences réparties sur toute la France.” Source: RevenueBase Database · checked Sep 3, 2026
19	CAP Ingelec	Indirect evidence	Mérignac, FranceHQ checked Sep 3, 2026	501-1,000	647 contacts →
	Indirect evidence “Groupe international d’Ingénierie & Réalisation, spécialisé dans les bâtiments complexes, nous assurons principalement des missions clés en main sur des projets de construction…” Source: RevenueBase Database · checked Sep 3, 2026
20	SCE Aménagement & Environnement	Indirect evidence	Nantes Cedex 2, FranceHQ checked Sep 3, 2026	501-1,000	599 contacts →
	Indirect evidence “SCE works closely for public and private actors on their sustainable territorial development projects.” Source: RevenueBase Database · checked Sep 3, 2026
21	Prime Engineering France	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 3, 2026	501-1,000	595 contacts →
	Indirect evidence “PRIME Engineering est l’un des acteurs incontournables du conseil en ingénierie.” Source: RevenueBase Database · checked Sep 3, 2026
22	Fondasol	Indirect evidence	Avignon, FranceHQ checked Sep 3, 2026	501-1,000	527 contacts →
	Indirect evidence “le Groupe Fondasol accompagne les projets de construction et d’aménagement du territoire sur l'ensemble de ses domaines d’expertises.” Source: RevenueBase Database · checked Sep 3, 2026
23	ERI	Indirect evidence	Fontenay Sous Bois, FranceHQ checked Sep 3, 2026	1,001-5,000	510 contacts →
	Indirect evidence “Engagé dans sa Raison d'Etre visant à dynamiser les modes de villes, de l'habitat à la mobilité, pour un patrimoine durable, le Groupe ERI est depuis 100 ans à la pointe de…” Source: RevenueBase Database · checked Sep 3, 2026
24	Cabinet Merlin	Indirect evidence	Lyon, FranceHQ checked Sep 3, 2026	501-1,000	482 contacts →
	Indirect evidence “Acteur reconnu depuis plus de 100 ans, le participe activement à la transition écologique en proposant des prestations de conseil et d’ingénierie.” Source: RevenueBase Database · checked Sep 3, 2026
25	EDEIS	Partial evidence	Nantes, FranceHQ checked Sep 3, 2026	501-1,000	476 contacts →
	Partial evidence “Acteur de premier plan du secteur de l'ingénierie et du management d'infrastructures, le Groupe Edeis développe une vision innovante et durable, avec une promesse forte : être…” Source: RevenueBase Database · checked Sep 3, 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: infrastructure consulting 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 infrastructure consulting firms.
Partial evidence: Its own public description names part of infrastructure consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure consulting 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 3,177 infrastructure consulting firms based in France

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Infrastructure consulting firms based in France at a glance

As of Sep 3, 2026

31.6%Verified-email coverage

1.8%Mobile-number coverage

34.5Average contacts per company

1-10Median size (employees)

17.5%Largest-city concentration · Paris

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

1,891

11-50

844

51-200

264

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

2,56731–60

20,63061–90

11,27290–180

160180+

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 infrastructure consulting 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 France whose own description of what they do matches “infrastructure consulting 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 infrastructure consulting 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 infrastructure consulting firms, and records with no verified work email. Companies headquartered outside France 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, 34,629 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 3, 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.

Infrastructure consulting firms 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 infrastructure consulting 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 infrastructure consulting firms are there based in France?

RevenueBase identified 3,177 infrastructure consulting firms headquartered in France 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?

EGIS, headquartered in France, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

Paris leads with 555 headquartered companies, followed by Lyon (99) and Toulouse (51).

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 34,629 verified decision-maker contacts tracked across these 3,177 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 3, 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.