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Company lists · Data refreshed September 2026

Top 25 Infrastructure consulting firms based in France

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, how directly it supports the match, 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 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 HQ checked on every row Match evidence 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. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
EGISPartial evidence
FranceHQ checked Sep 3, 202610001+11,761

“Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.”

Source: company website · checked Sep 3, 2026
2
COLASPartial evidence
Paris, FranceHQ checked Sep 3, 202610001+9,892

“Colas, a subsidiary of the Bouygues Group, is a major player in the construction and maintenance of transportation infrastructure and urban development.”

Source: company website · checked Sep 3, 2026
3
AltranIndirect evidence
Neuilly-Sur-Seine, FranceHQ checked Sep 3, 202610001+6,481

“Altran is now Capgemini Engineering.”

Source: company website · checked Sep 3, 2026
4
SystraIndirect evidence
Paris, FranceHQ checked Sep 3, 202610001+5,087

“SYSTRA is one of the world's leading engineering and consultancy groups specialising in public transport and mobility solutions.”

Source: company website · checked Sep 3, 2026
5
ArteliaIndirect evidence
Saint-Ouen, FranceHQ checked Sep 3, 20265,001-10,0004,669

“Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.”

Source: company website · checked Sep 3, 2026
6
SADEPartial evidence
FranceHQ checked Sep 3, 20265,001-10,0002,516

“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: company website · checked Sep 3, 2026
7
IngéropIndirect evidence
Rueil-Malmaison, FranceHQ checked Sep 3, 20261,001-5,0002,049

“Ingerop is an independent engineering company employing 3 500 people and with its head offices in Rueil-Malmaison (France).”

Source: company website · checked Sep 3, 2026
8
Vulcain Engineering GroupIndirect evidence
Neuilly-sur-seine, FranceHQ checked Sep 3, 20265,001-10,0001,484

“Vulcain Ingénierie est depuis plusieurs années un acteur incontournable du conseil en ingénierie dédié aux secteurs de l’énergie et de l’environnement.”

Source: company website · checked Sep 3, 2026
9
Soletanche BachyIndirect evidence
Rueil-Malmaison, FranceHQ checked Sep 3, 20265,001-10,0001,211

“Soletanche Bachy is a world benchmark in foundations and soil technologies, and is involved in over projects every year.”

Source: company website · checked Sep 3, 2026
10
BTP ConsultantsIndirect evidence
Montigny-le-bretonneux, FranceHQ checked Sep 3, 2026201-5001,069

“BTP Consultants est un bureau de ̂, et présent à l'échelle nationale depuis plus de.”

Source: company website · checked Sep 3, 2026
11
AUSYIndirect evidence
Sèvres Cedex, FranceHQ checked Sep 3, 20265,001-10,0001,062

“The story of AUSY by Randstad started in France in 1989.”

Source: company website · checked Sep 3, 2026
12
T&s Technology & StrategyIndirect evidence
Schiltigheim, FranceHQ checked Sep 3, 20261,001-5,000946

“Fondée en 2008, T&S est une entreprise spécialisée dans l'ingénierie, le digital et le conseil.”

Source: company website · checked Sep 3, 2026
13
Antea Group - FranceIndirect evidence
Olivet, FranceHQ checked Sep 3, 20261,001-5,000773

“Antea Group est une société internationale d’ingénierie et de conseil en environnement.”

Source: company website · checked Sep 3, 2026
14
ParlymIndirect evidence
Marseille, FranceHQ checked Sep 3, 20261,001-5,000732

“For over 50 years the Parlym Group has managed to establish itself as a major player in industrial engineering all over the world.”

Source: company website · checked Sep 3, 2026
15
Groupe IntmIndirect evidence
Levallois-Perret, FranceHQ checked Sep 3, 20261,001-5,000716

“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: company website · checked Sep 3, 2026
16
RameryIndirect evidence
Erquinghem Lys, FranceHQ checked Sep 3, 20261,001-5,000668

“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: company website · checked Sep 3, 2026
17
Sixense GroupPartial evidence
Rueil Malmaison, FranceHQ checked Sep 3, 2026501-1,000664

“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: company website · checked Sep 3, 2026
18
AptiskillsIndirect evidence
92300 Levallois Perret, FranceHQ checked Sep 3, 20261,001-5,000659

“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: company website · checked Sep 3, 2026
19
CAP IngelecIndirect evidence
Mérignac, FranceHQ checked Sep 3, 2026501-1,000647

“Groupe international d’Ingénierie & Réalisation, spécialisé dans les bâtiments complexes, nous assurons principalement des missions clés en main sur des projets de construction…”

Source: company website · checked Sep 3, 2026
20
SCE Aménagement & EnvironnementIndirect evidence
Nantes Cedex 2, FranceHQ checked Sep 3, 2026501-1,000599

“SCE works closely for public and private actors on their sustainable territorial development projects.”

Source: company website · checked Sep 3, 2026
21
Prime Engineering FranceIndirect evidence
Boulogne Billancourt, FranceHQ checked Sep 3, 2026501-1,000595

“PRIME Engineering est l’un des acteurs incontournables du conseil en ingénierie.”

Source: company website · checked Sep 3, 2026
22
FondasolIndirect evidence
Avignon, FranceHQ checked Sep 3, 2026501-1,000527

“le Groupe Fondasol accompagne les projets de construction et d’aménagement du territoire sur l'ensemble de ses domaines d’expertises.”

Source: company website · checked Sep 3, 2026
23
ERIIndirect evidence
Fontenay Sous Bois, FranceHQ checked Sep 3, 20261,001-5,000510

“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: company website · checked Sep 3, 2026
24
Cabinet MerlinIndirect evidence
Lyon, FranceHQ checked Sep 3, 2026501-1,000482

“Acteur reconnu depuis plus de 100 ans, le participe activement à la transition écologique en proposant des prestations de conseil et d’ingénierie.”

Source: company website · checked Sep 3, 2026
25
EDEISPartial evidence
Nantes, FranceHQ checked Sep 3, 2026501-1,000476

“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: company website · checked Sep 3, 2026

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
1-10Median size (employees)
ParisLargest hub · 555 HQs
2,017Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
1,891
11-50
844
51-200
264
201-500
68
501-1,000
27
1,001-5,000
22
5,001-10,000
6
10001+
11

Verified emails by last verification

0–30
0
31–60
2,567
61–90
20,630
90–180
11,272
180+
160

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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 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.

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