Company lists · Data refreshed September 2026

Top 25 Transit authority engineering services based in France

Name: Transit authority engineering services based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 645 companies tracked

RevenueBase identified 645 transit authority engineering services headquartered in France as of September 2026 and tracks 39,230 professional contacts across them, including 15,604 with verified work emails. Paris is the largest hub.

This list covers transit authority engineering services 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 19, 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 19, 2026 86% judged on-target in blind review

645Companies

39,230Contacts tracked

15,604Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest transit authority engineering services based in France

Ranked by team size

Top 25 of 645 transit authority engineering services based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transit authority engineering services: 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	Saint-quentin-en-yvelines, FranceHQ checked Sep 19, 2026	10001+	11,641 contacts →
	Partial evidence “Egis is a leading global architectural, consulting, construction engineering, operations and mobility services firm.” Source: RevenueBase Database · checked Sep 19, 2026
2	Systra	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	10001+	5,069 contacts →
	Strong 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 19, 2026
3	Artelia	Partial evidence	Saint-ouen, FranceHQ checked Sep 19, 2026	5,001-10,000	4,612 contacts →
	Partial 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 19, 2026
4	Ratp DEV	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	10001+	2,958 contacts →
	Partial evidence “RATP Dev is a subsidiary of the RATP Group, global leader in high-capacity urban rail and the world's third largest public transport operator.” Source: RevenueBase Database · checked Sep 19, 2026
5	TSO	Indirect evidence	Chelles, FranceHQ checked Sep 19, 2026	1,001-5,000	1,109 contacts →
	Indirect evidence “With more than 90 years’ experience in France and internationally, TSO (subsidiary of NGE) puts its expertise to work on: • rail services resumed between Oloron and Bedous • track…” Source: RevenueBase Database · checked Sep 19, 2026
6	Ikos Group	Indirect evidence	Levallois-perret, FranceHQ checked Sep 19, 2026	1,001-5,000	1,042 contacts →
	Indirect evidence “JOIN US : contact@ikosconsulting.com IKOS is a leading technology consulting firm specialized in the Railway sector with an additional offer in Energy.” Source: RevenueBase Database · checked Sep 19, 2026
7	Parlym	Partial evidence	Estaque, FranceHQ checked Sep 19, 2026	1,001-5,000	732 contacts →
	Partial 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 19, 2026
8	Aptiskills	Indirect evidence	92300 Levallois Perret, FranceHQ checked Sep 19, 2026	1,001-5,000	660 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 19, 2026
9	EDEIS	Indirect evidence	Nantes, FranceHQ checked Sep 19, 2026	501-1,000	475 contacts →
	Indirect 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 19, 2026
10	Setec International	Indirect evidence	Vitrolles, FranceHQ checked Sep 19, 2026	201-500	387 contacts →
	Indirect evidence “setec international est une filiale du Groupe setec, un des premiers groupes français d’ingénierie.” Source: RevenueBase Database · checked Sep 19, 2026
11	Atlantic Ingénierie	Indirect evidence	Saint-herblain, FranceHQ checked Sep 19, 2026	201-500	341 contacts →
	Indirect evidence “Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…” Source: RevenueBase Database · checked Sep 19, 2026
12	ECM Engineering Conception Maintenance	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	336 contacts →
	Partial evidence “ECM (Engineering Conception Maintenance) a été créée en 1973 par le groupe CRIT, leader français du service aux entreprises dont le C.A.” Source: RevenueBase Database · checked Sep 19, 2026
13	Setec TPI	Strong evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	315 contacts →
	Strong evidence “setec tpi, a subsidiary of the setec group, with over 300 employees, participates in all civil works engineering projects, in sectors ranging from transport infrastructures, civil…” Source: RevenueBase Database · checked Sep 19, 2026
14	Ingeva	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 19, 2026	201-500	281 contacts →
	Indirect evidence “Fondée en 2014, INGEVA est une société spécialisée dans l'ingénierie de la mobilité durable.” Source: RevenueBase Database · checked Sep 19, 2026
15	Seureca	Partial evidence	Aubervilliers, FranceHQ checked Sep 19, 2026	201-500	250 contacts →
	Partial evidence “Seureca is the Consulting Engineering and Strategic and Operational Assistance division of the Veolia Group.” Source: RevenueBase Database · checked Sep 19, 2026
16	Setec ITS	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	201-500	247 contacts →
	Partial evidence “Filiale du groupe setec, setec its est spécialisé dans l’ingénierie de la mobilité et des transports urbains à l'échelle nationale et internationale.” Source: RevenueBase Database · checked Sep 19, 2026
17	ATIF	Indirect evidence	St.-denis, FranceHQ checked Sep 19, 2026	51-200	176 contacts →
	Indirect evidence “NOTRE MISSION : DÉPLOYER LES RÉSEAUX FERROVIAIRES DE DEMAIN 19 ans d’expérience et de défis relevés avec nos clients sur leurs projets de déploiement de réseaux ferroviaires, ça…” Source: RevenueBase Database · checked Sep 19, 2026
18	ACEPP	Partial evidence	Lyon, FranceHQ checked Sep 19, 2026	51-200	144 contacts →
	Partial evidence “INGÉNIERISTE DE LA CONSTRUCTION DES INFRASTRUCTURES COMPLEXES Pour garantir à nos clients, le transfert réussi à l’exploitant des d’infrastructures complexes, notre département…” Source: RevenueBase Database · checked Sep 19, 2026
19	OCY Technologies	Indirect evidence	Levallois Perret, FranceHQ checked Sep 19, 2026	51-200	139 contacts →
	Indirect evidence “OCY Technologies est une société de conseil et d’assistance technique spécialisée en ingénierie ferroviaire et dans l’énergie.” Source: RevenueBase Database · checked Sep 19, 2026
20	Groupe Eolen	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 19, 2026	201-500	110 contacts →
	Indirect evidence “Depuis 15 ans, EOLEN s’impose comme un interlocuteur de référence dans le Conseil et l’Ingénierie.” Source: RevenueBase Database · checked Sep 19, 2026
21	Oneside	Indirect evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	107 contacts →
	Indirect evidence “Société de conseil en ingénierie, nous proposons notre expertise dans 3 domaines - Énergies & Industrie - Infrastructures Ferroviaires - Génie civil & Bâtiment.” Source: RevenueBase Database · checked Sep 19, 2026
22	Saferail SAS	Indirect evidence	Nantes, FranceHQ checked Sep 19, 2026	51-200	106 contacts →
	Indirect evidence “Présent depuis 2003 dans l’Ingénierie et l’Ingénierie-Conseil du Contrôle-Commande et Signalisation ferroviaire, SAFERAIL est aujourd’hui Leader dans son domaine en France.” Source: RevenueBase Database · checked Sep 19, 2026
23	OTIMO	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 19, 2026	51-200	106 contacts →
	Indirect evidence “otimo est une société de conseil en ingénierie spécialisée dans les secteurs de l'Énergie, l'Environnement et les Infrastructures.” Source: RevenueBase Database · checked Sep 19, 2026
24	IMING	Partial evidence	Montrouge, FranceHQ checked Sep 19, 2026	51-200	100 contacts →
	Partial evidence “IMING is an expert in the engineering of highly technical projects, covering the entire value chain in the fields of mobility services, energy and construction.” Source: RevenueBase Database · checked Sep 19, 2026
25	Auxitec	Indirect evidence	Le Havre, FranceHQ checked Sep 19, 2026	501-1,000	93 contacts →
	Indirect evidence “PARTAGER LE PROGRES Auxitec a rejoint Artelia en 2017, un groupe international multidisciplinaire de conseil, d’ingénierie et de management de projet dans les secteurs du…” Source: RevenueBase Database · checked Sep 19, 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: transit authority engineering services. 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 transit authority engineering services.
Partial evidence: Its own public description names part of transit authority engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transit authority engineering services. 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 645 transit authority engineering services based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 15,604 reachable decision-makers.

Free signup · no credit card

View the full list →

Transit authority engineering services based in France at a glance

As of Sep 19, 2026

39.8%Verified-email coverage

60.8Average contacts per company

1-10Median size (employees)

12.2%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

373

11-50

179

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 645 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 transit authority engineering services, 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 “transit authority engineering services”. 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 transit authority engineering services), 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 transit authority engineering services, 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, 15,604 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 19, 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.

Transit authority engineering services by metro

Transit authority engineering services in Paris79

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 transit authority engineering services, 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 transit authority engineering services are there based in France?

RevenueBase identified 645 transit authority engineering services 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 transit authority engineering services?

Paris leads with 79 headquartered companies, followed by Lyon (19) and Reims (10).

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 15,604 verified decision-maker contacts tracked across these 645 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 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 645 transit authority engineering services based in France. Start with a free account, no credit card.

Download this list →

Related lists

Transit authority engineering services by geography

Browse the directory

Browse: Companies home · All France lists · All Transit authority engineering services lists · New lists

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.