Company lists · Data refreshed September 2026

Top 25 Railway modernization companies based in France

Name: Railway modernization companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 170 companies tracked

RevenueBase identified 170 railway modernization companies headquartered in France as of September 2026 and tracks 14,181 professional contacts across them, including 4,531 with verified work emails. Paris is the largest hub.

This list covers railway modernization companies 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 17, 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 17, 2026 86% judged on-target in blind review

170Companies

14,181Contacts tracked

4,531Verified emails

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The 25 largest railway modernization companies based in France

Ranked by team size

Top 25 of 170 railway modernization companies based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to railway modernization 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	Colas Rail	Indirect evidence	Puteaux, FranceHQ checked Sep 17, 2026	5,001-10,000	2,572 contacts →
	Indirect evidence “Passion, Purpose, Challenge : at Colas Rail, we are driven by change, this is why our employees imagine each day a world where innovative and eco-friendly contribute to the…” Source: RevenueBase Database · checked Sep 17, 2026
2	ETF	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 17, 2026	1,001-5,000	1,597 contacts →
	Indirect evidence “Au sein des métiers Réseaux France de VINCI Construction, ETF conçoit, construit et entretient chaque jour les infrastructures ferroviaires nationales, urbaines et privées en…” Source: RevenueBase Database · checked Sep 17, 2026
3	TSO	Indirect evidence	Chelles, FranceHQ checked Sep 17, 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 17, 2026
4	Ikos Group	Partial evidence	Levallois-perret, FranceHQ checked Sep 17, 2026	1,001-5,000	1,042 contacts →
	Partial 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 17, 2026
5	Sferis	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	1,001-5,000	714 contacts →
	Indirect evidence “Date de création : Février 2012 Groupe : SNCF Directeur : M.” Source: RevenueBase Database · checked Sep 17, 2026
6	Vossloh Switch Systems	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 17, 2026	1,001-5,000	603 contacts →
	Indirect evidence “The Vossloh Switch Systems division develops and manufactures switch systems for rail infrastructure, which must be individually adapted to the customer and the project.” Source: RevenueBase Database · checked Sep 17, 2026
7	Geismar Rail Industry Technologies & Services	Indirect evidence	Colmar, FranceHQ checked Sep 17, 2026	501-1,000	327 contacts →
	Indirect evidence “For almost a century, teams from Geismar have been bringing their passion and expertise to the development of rail transport.” Source: RevenueBase Database · checked Sep 17, 2026
8	ATIF	Indirect evidence	St.-denis, FranceHQ checked Sep 17, 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 17, 2026
9	OCY Technologies	Indirect evidence	Levallois Perret, FranceHQ checked Sep 17, 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 17, 2026
10	Masteris	Partial evidence	Saint-denis, FranceHQ checked Sep 17, 2026	51-200	135 contacts →
	Partial evidence “Specialist in maintenance of rolling stock and railway engineering, MASTERIS - a subsidiary of SNCF Voyageurs - offers its clients made-to-measure solutions to improve the…” Source: RevenueBase Database · checked Sep 17, 2026
11	Socofer France	Indirect evidence	Saint-pierre-des-corps, FranceHQ checked Sep 17, 2026	51-200	119 contacts →
	Indirect evidence “Established since 1920 and formerly named : “Etablissements Billard”, Socofer splits its activities in 4 distinct sectors :> Infrastructure : design and manufacturing of…” Source: RevenueBase Database · checked Sep 17, 2026
12	Inveho	Indirect evidence	Levallois-perret, FranceHQ checked Sep 17, 2026	501-1,000	111 contacts →
	Indirect evidence “INVEHO a company at the service of rail freight!” Source: RevenueBase Database · checked Sep 17, 2026
13	Saferail SAS	Indirect evidence	Nantes, FranceHQ checked Sep 17, 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 17, 2026
14	Delcourt Rail	Indirect evidence	Mennecy, FranceHQ checked Sep 17, 2026	201-500	105 contacts →
	Indirect evidence “DELCOURT RAIL est spécialisée dans la construction, le renouvellement et la maintenance de voies ferrées.” Source: RevenueBase Database · checked Sep 17, 2026
15	Perrier	Indirect evidence	Saint-priest, FranceHQ checked Sep 17, 2026	201-500	98 contacts →
	Indirect evidence “PERRIER TP is a civil engineering company based out of 13 Route de Lyon, Saint-Priest, Rhone-Alpes, France.” Source: RevenueBase Database · checked Sep 17, 2026
16	Safety FER	Indirect evidence	Guyancourt, FranceHQ checked Sep 17, 2026	51-200	87 contacts →
	Indirect evidence “Depuis sa création en 2010, SAFETY FER développe son savoir-faire et diversifie son activité dans le but de réaliser des prestations de sécurité et de signalisation ferroviaires…” Source: RevenueBase Database · checked Sep 17, 2026
17	Securail	Indirect evidence	Rueil Malmaison, FranceHQ checked Sep 17, 2026	201-500	86 contacts →
	Indirect evidence “SECURAIL est une entreprise de sécurité ferroviaire.” Source: RevenueBase Database · checked Sep 17, 2026
18	ACC M	Indirect evidence	Clermont Ferrand, FranceHQ checked Sep 17, 2026	201-500	76 contacts →
	Indirect evidence “ACC M – Patrimoine ferroviaire, modernité durable au service des territoires Depuis 1919, ACC M s’engage dans la préservation et la remise en valeur des matériels roulants…” Source: RevenueBase Database · checked Sep 17, 2026
19	Ferrotract	Indirect evidence	St Pierre Des Corps, FranceHQ checked Sep 17, 2026	51-200	75 contacts →
	Indirect evidence “Ferrotract est une Entreprise Ferroviaire (EF) dynamique spécialisée en - Traction de trains de travaux (TTX)- Acheminements de matériels ferroviaires en autonomie sur le RFN-…” Source: RevenueBase Database · checked Sep 17, 2026
20	Squirel	Indirect evidence	St.-denis, FranceHQ checked Sep 17, 2026	51-200	67 contacts →
	Indirect evidence “SQUIREL est un spécialiste des systèmes d’information du secteur ferroviaire Depuis près de 15 ans, nous proposons les solutions les plus adaptées aux défis opérationnels et…” Source: RevenueBase Database · checked Sep 17, 2026
21	RM System France	Indirect evidence	Uberach, FranceHQ checked Sep 17, 2026	201-500	65 contacts →
	Indirect evidence “For nearly 20 years, RM System has been a trusted industrial partner in the rail sector.” Source: RevenueBase Database · checked Sep 17, 2026
22	Fer-Play	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	51-200	58 contacts →
	Indirect evidence “Bureau d’études indépendant exclusivement dédié au domaine ferroviaire, nous accompagnons depuis 2016 les entreprises et les territoires pour des missions complètes de MOE et…” Source: RevenueBase Database · checked Sep 17, 2026
23	DVF	Indirect evidence	Chevigny St Sauveur, FranceHQ checked Sep 17, 2026	51-200	49 contacts →
	Indirect evidence “DVF - Travaux Ferroviaires” Source: RevenueBase Database · checked Sep 17, 2026
24	Azurail	Indirect evidence	Taillades, FranceHQ checked Sep 17, 2026	11-50	49 contacts →
	Indirect evidence “La société AZURAIL est une entreprise spécialisée dans l’expertise, l’entretien et le renouvellement de réseaux ferroviaires, basée sur la commune de Coustellet à proximité…” Source: RevenueBase Database · checked Sep 17, 2026
25	Transalp Renouvellement	Indirect evidence	Pringy, FranceHQ checked Sep 17, 2026	51-200	42 contacts →
	Indirect evidence “TRANSALP RENOUVELLEMENT s'est créée pour répondre à l'appel d'offre des suites rapide de la période 2013-2017.” Source: RevenueBase Database · checked Sep 17, 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: railway modernization 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 railway modernization companies.
Partial evidence: Its own public description names part of railway modernization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name railway modernization 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 170 railway modernization companies based in France

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Railway modernization companies based in France at a glance

As of Sep 17, 2026

32.0%Verified-email coverage

83.4Average contacts per company

11-50Median size (employees)

11.2%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 170 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 railway modernization 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 France whose own description of what they do matches “railway modernization 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 railway modernization 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 railway modernization companies, 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, 4,531 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 17, 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.

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 railway modernization 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 railway modernization companies are there based in France?

RevenueBase identified 170 railway modernization companies 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?

Colas Rail, headquartered in Puteaux, tops this list with the largest team on record.

Which city has the most railway modernization companies?

Paris leads with 19 headquartered companies, followed by Chelles (5) and Lyon (4).

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 4,531 verified decision-maker contacts tracked across these 170 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 17, 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.