Company lists · Data refreshed September 2026

Top 25 Big IT consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 3,893 companies tracked

RevenueBase identified 3,893 big IT consulting firms headquartered in France as of September 2026 and tracks 190,537 professional contacts across them, including 68,826 with verified work emails and 5,829 with mobile numbers. Paris is the largest hub.

This list covers big IT 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 23, 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 23, 2026 86% judged on-target in blind review

3,893Companies

190,537Contacts tracked

68,826Verified emails

5,829Mobile numbers

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The 25 largest big IT consulting firms based in France

Ranked by team size

Top 25 of 3,893 big IT consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big IT 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	Sopra Steria	Partial evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	36,960 contacts →
	Partial evidence “Sopra Steria, a major Tech player in Europe with employees in nearly 30 countries, is recognised for its consulting, digital services and solutions.” Source: RevenueBase Database · checked Sep 23, 2026
2	ALTEN	Indirect evidence	Boulogne-billancourt Cedex, FranceHQ checked Sep 23, 2026	10001+	17,044 contacts →
	Indirect evidence “ALTEN is committed to meeting the expectations of its stakeholders and anticipating their requirements in the fields of innovation, R&D, and technological information systems.” Source: RevenueBase Database · checked Sep 23, 2026
3	Capgemini Invent	Partial evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	16,032 contacts →
	Partial evidence “Capgemini Invent is the digital innovation, consulting and transformation brand of the Capgemini Group, a global business line that combines market leading expertise in strategy…” Source: RevenueBase Database · checked Sep 23, 2026
4	Devoteam	Partial evidence	Levallois-perret, FranceHQ checked Sep 23, 2026	10001+	7,827 contacts →
	Partial evidence “Devoteam is a AI-driven tech consulting firm specialised in cloud platforms, cyber, data, and sustainability.” Source: RevenueBase Database · checked Sep 23, 2026
5	Wavestone	Partial evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 23, 2026	1,001-5,000	6,190 contacts →
	Partial evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 23, 2026
6	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	4,928 contacts →
	Indirect evidence “Le groupe SII est une société d’ingénierie et de conseil en technologies (ICT) et une entreprise de services numériques (ESN) créée en 1979 par Bernard HUVÉ, ingénieur de…” Source: RevenueBase Database · checked Sep 23, 2026
7	Scalian	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 23, 2026	5,001-10,000	2,860 contacts →
	Indirect evidence “Established in 1989, the Scalian Group has nearly employees in France and abroad.” Source: RevenueBase Database · checked Sep 23, 2026
8	AUBAY	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 23, 2026	5,001-10,000	2,670 contacts →
	Indirect evidence “Present in 7 countries in Europe, Aubay has more than 7800 employees and has generated revenues of € 513,5 million in 2022, with year on year growth consistently.” Source: RevenueBase Database · checked Sep 23, 2026
9	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 23, 2026	10001+	2,169 contacts →
	Indirect evidence “Gfi became Inetum in 2020.” Source: RevenueBase Database · checked Sep 23, 2026
10	VISEO	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 23, 2026	1,001-5,000	1,989 contacts →
	Partial evidence “VISEO is a global digital and business consulting company that assists its clients with their transformation journeys using advanced technology and industry expertise.” Source: RevenueBase Database · checked Sep 23, 2026
11	Keyrus	Indirect evidence	Levallois-perret, FranceHQ checked Sep 23, 2026	1,001-5,000	1,964 contacts →
	Indirect evidence “At Keyrus, we help organizations move from experimental AI to industrialized AI, from isolated agents to orchestrated systems, and from insight to execution.” Source: RevenueBase Database · checked Sep 23, 2026
12	Davidson Consulting	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 23, 2026	1,001-5,000	1,848 contacts →
	Partial evidence “Founded in 2005, Davidson consulting is positioned as an actor in management consulting and technology expertise.” Source: RevenueBase Database · checked Sep 23, 2026
13	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 23, 2026	1,001-5,000	1,735 contacts →
	Indirect evidence “Infotel accompagne les directions Informatiques et Métiers des grandes entreprises depuis 45 ans (Airbus, Air France, PSA, BNP Paribas, Banque de France ou encore BPCE, etc.).” Source: RevenueBase Database · checked Sep 23, 2026
14	Mc2i	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	1,001-5,000	1,668 contacts →
	Indirect evidence “mc2i is an independent consultancy in Information System.” Source: RevenueBase Database · checked Sep 23, 2026
15	Accenture France	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	10001+	1,614 contacts →
	Indirect evidence “Accenture est une entreprise internationale de conseil en management, technologies et externalisation.” Source: RevenueBase Database · checked Sep 23, 2026
16	Solutec	Strong evidence	Villeurbanne, FranceHQ checked Sep 23, 2026	1,001-5,000	1,459 contacts →
	Strong evidence “SOLUTEC: An IT Services Company SOLUTEC is an IT services company specialized in engineering, consulting and services.” Source: RevenueBase Database · checked Sep 23, 2026
17	Prodware	Indirect evidence	Paris, FranceHQ checked Sep 23, 2026	1,001-5,000	1,394 contacts →
	Indirect evidence “At Prodware, we believe that Trust, Audacity, and Passion are the driving forces behind meaningful digital transformation.” Source: RevenueBase Database · checked Sep 23, 2026
18	SCC France	Partial evidence	Nanterre, FranceHQ checked Sep 23, 2026	1,001-5,000	1,300 contacts →
	Partial evidence “SCC France unleashes the potential of IT for global businesses, as one of Europe’s largest independent IT groups.” Source: RevenueBase Database · checked Sep 23, 2026
19	NIJI	Indirect evidence	Issy-les-moulineaux, FranceHQ checked Sep 23, 2026	1,001-5,000	1,256 contacts →
	Indirect evidence “Créée en septembre 2001, Niji est une société de conseil, de design et de mise en œuvre technologique, entièrement dédiée à la transformation numérique des entreprises et des…” Source: RevenueBase Database · checked Sep 23, 2026
20	Hardis Group	Strong evidence	Seyssinet-pariset, FranceHQ checked Sep 23, 2026	1,001-5,000	1,132 contacts →
	Strong evidence “Hardis Group is a consulting and IT services company, a Salesforce pure player through its subsidiary Cloudity, and the vendor of the Reflex logistics software suite.” Source: RevenueBase Database · checked Sep 23, 2026
21	T&s Technology & Strategy	Indirect evidence	Schiltigheim, FranceHQ checked Sep 23, 2026	1,001-5,000	922 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 23, 2026
22	Acensi	Indirect evidence	Courbevoie, FranceHQ checked Sep 23, 2026	1,001-5,000	844 contacts →
	Indirect evidence “You will be part of ACENSI network: 1650 co-workers involved in IS transformation projects at our clients through our multisectoral expertise.” Source: RevenueBase Database · checked Sep 23, 2026
23	Viveris	Strong evidence	Boulogne-billancourt, FranceHQ checked Sep 23, 2026	1,001-5,000	833 contacts →
	Strong evidence “Viveris is a consulting and engineering company with two main activities - IT consulting.” Source: RevenueBase Database · checked Sep 23, 2026
24	Synchrone FR	Partial evidence	Paris, FranceHQ checked Sep 23, 2026	1,001-5,000	803 contacts →
	Partial evidence “Synchrone apporte son expertise en Consulting, Data Expertise et Digital Experience à ses clients grands comptes.” Source: RevenueBase Database · checked Sep 23, 2026
25	Micropole	Partial evidence	Levallois-perret, FranceHQ checked Sep 23, 2026	1,001-5,000	795 contacts →
	Partial evidence “An international consulting group specialized in corporate transformation through Data, MICROPOLE partners its clients through a global approach: ‘Data Driven‘ Strategy, Cloud…” Source: RevenueBase Database · checked Sep 23, 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: big IT 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 big IT consulting firms.
Partial evidence: Its own public description names part of big IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big IT 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 3,893 big IT consulting firms based in France

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Big IT consulting firms based in France at a glance

As of Sep 23, 2026

36.1%Verified-email coverage

3.1%Mobile-number coverage

48.9Average contacts per company

1-10Median size (employees)

28.1%Largest-city concentration · Paris

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

2,356

11-50

956

51-200

350

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.0d

52,0850–30

14,65231–60

82161–90

3990–180

1,229180+

Company record updated

Median 77.0d

00–30

61,65231–60

82,96561–90

36,24990–180

9,671180+

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 big IT 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 “big IT 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 big IT 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 big IT 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, 68,826 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 23, 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.

Big IT 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 big IT 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 big IT consulting firms are there based in France?

RevenueBase identified 3,893 big IT 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?

Sopra Steria, headquartered in Paris, tops this list with the largest team on record.

Which city has the most big IT consulting firms?

Paris leads with 1093 headquartered companies, followed by Lyon (119) and Toulouse (60).

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 68,826 verified decision-maker contacts tracked across these 3,893 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 23, 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.