Company lists · Data refreshed September 2026

Top 25 Software engineering consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 2,425 companies tracked

RevenueBase identified 2,425 software engineering consulting firms headquartered in France as of September 2026 and tracks 59,082 professional contacts across them, including 21,075 with verified work emails and 2,171 with mobile numbers. Paris is the largest hub.

This list covers software engineering 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 6, 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 6, 2026 86% judged on-target in blind review

2,425Companies

59,082Contacts tracked

21,075Verified emails

2,171Mobile numbers

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The 25 largest software engineering consulting firms based in France

Ranked by team size

Top 25 of 2,425 software engineering consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software engineering 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	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	10001+	4,928 contacts →
	“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: company website · checked Sep 6, 2026
2	GFI World	Indirect evidence	Saint-ouen, FranceHQ checked Sep 6, 2026	10001+	2,169 contacts →
	“Gfi became Inetum in 2020.” Source: company website · checked Sep 6, 2026
3	Keyrus	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	1,001-5,000	1,964 contacts →
	“At Keyrus, we help organizations move from experimental AI to industrialized AI, from isolated agents to orchestrated systems, and from insight to execution.” Source: company website · checked Sep 6, 2026
4	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	1,001-5,000	1,735 contacts →
	“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: company website · checked Sep 6, 2026
5	Apside	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 6, 2026	1,001-5,000	1,537 contacts →
	“We are true to our word Expertise, trust, careers For 36 years, Apside has cooperated with the largest French and European groups on their IT and scientific projects.” Source: company website · checked Sep 6, 2026
6	Prodware	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	1,001-5,000	1,394 contacts →
	“At Prodware, we believe that Trust, Audacity, and Passion are the driving forces behind meaningful digital transformation.” Source: company website · checked Sep 6, 2026
7	SFEIR	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	501-1,000	904 contacts →
	“SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: company website · checked Sep 6, 2026
8	Viveris	Strong evidence	Boulogne-billancourt, FranceHQ checked Sep 6, 2026	1,001-5,000	833 contacts →
	“Viveris is a consulting and engineering company with two main activities - IT consulting.” Source: company website · checked Sep 6, 2026
9	Groupe Intm	Indirect evidence	Levallois-perret, FranceHQ checked Sep 6, 2026	1,001-5,000	714 contacts →
	“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 6, 2026
10	Klanik	Strong evidence	Marseille, FranceHQ checked Sep 6, 2026	501-1,000	585 contacts →
	“KLANIK is a consulting company specialized in IT Engineering which accompanies its partners in their digital and technological projects.” Source: company website · checked Sep 6, 2026
11	Zenika	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	430 contacts →
	“Zenika is an IT consulting firm with 550 employees that helps companies with their digital transformation.” Source: company website · checked Sep 6, 2026
12	WE	Indirect evidence	Issy Les Moulineaux, FranceHQ checked Sep 6, 2026	201-500	404 contacts →
	“We+ est un cabinet de conseil expert en IT, membre de l’écosystème Alan Allman Associates.” Source: company website · checked Sep 6, 2026
13	Objectware	Strong evidence	Paris, FranceHQ checked Sep 6, 2026	501-1,000	395 contacts →
	“Objectware Group is an IT Services Company (or ESN: Entreprise de Services du Numérique), founded in and dedicated to consulting and IT system engineering.” Source: company website · checked Sep 6, 2026
14	Conserto	Indirect evidence	Saint-herblain, FranceHQ checked Sep 6, 2026	201-500	378 contacts →
	“Conserto, jeune société innovante et dynamique, propose des prestations de conseil et d’expertise informatique : Nous avons 3 domaines d'expertise - Cloud - Digital - Embedded Et…” Source: company website · checked Sep 6, 2026
15	Magellan Consulting	Partial evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	313 contacts →
	“Magellan Consulting devient Magellan!” Source: company website · checked Sep 6, 2026
16	Infogene	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 6, 2026	501-1,000	291 contacts →
	“INFOGENE est une ESN spécialisée dans 3 domaines principaux (en AMOA et MOE): DIGITAL: Notre savoir faire : Conseil, architecture logiciel, conception, développement, maintenance…” Source: company website · checked Sep 6, 2026
17	Cyllene	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	279 contacts →
	“Chez Cyllene, on couvre le spectre complet de votre besoin en termes de : Conseils 🧬 Définition d’architectures Hébergement & Services managés Cybersécurité & Formations…” Source: company website · checked Sep 6, 2026
18	HENIX	Partial evidence	Montrouge, FranceHQ checked Sep 6, 2026	201-500	277 contacts →
	“Founded in 1998, Henix is positioned as a leading trusted third party among independent French pure player digital services companies and an expert in software quality…” Source: company website · checked Sep 6, 2026
19	Kaizen Solutions KZS	Indirect evidence	Montbonnot-saint-martin, FranceHQ checked Sep 6, 2026	201-500	261 contacts →
	“Nous sommes une ESN (entreprise de services numériques) spécialisée dans la conception, le développement et la maintenabilité de solutions informatiques, techniques et…” Source: company website · checked Sep 6, 2026
20	Ouidou	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	252 contacts →
	“Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: company website · checked Sep 6, 2026
21	Bassetti France	Partial evidence	Grenoble, FranceHQ checked Sep 6, 2026	501-1,000	251 contacts →
	“Providing IT and consulting services to companies across the world, BASSETTI is a recognized market leader in addressing client’s needs to improve the way internal knowledge is…” Source: company website · checked Sep 6, 2026
22	Business At Work	Indirect evidence	Paris, FranceHQ checked Sep 6, 2026	201-500	232 contacts →
	“Business At Work is a management and information systems consultancy company offering a range of services entirely focused towards the optimisation of the internal functions of…” Source: company website · checked Sep 6, 2026
23	Avisto	Partial evidence	Valbonne, FranceHQ checked Sep 6, 2026	201-500	226 contacts →
	“The software development: your passion, our profession.” Source: company website · checked Sep 6, 2026
24	Younup	Indirect evidence	Nantes, FranceHQ checked Sep 6, 2026	201-500	225 contacts →
	“Bienvenue chez Younup : la néo-ESN, agile, humaine, faite de passionnés, avec une ambition simple et forte : remettre l’humain et l’expertise technique au cœur du service IT.” Source: company website · checked Sep 6, 2026
25	Takima	Indirect evidence	Bagneux, FranceHQ checked Sep 6, 2026	51-200	222 contacts →
	“Whether dealing with Opensource, B2B, B2C mobile apps, intranets or HA infrastructures, the same approach remains: Understanding the context, qualifying the use case, determining…” Source: company website · checked Sep 6, 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: software engineering 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 software engineering consulting firms.
Partial evidence: Its own public description names part of software engineering consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software engineering 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 2,425 software engineering consulting firms based in France

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Software engineering consulting firms based in France at a glance

As of Sep 6, 2026

35.7%Verified-email coverage

3.7%Mobile-number coverage

24.4Average contacts per company

1-10Median size (employees)

25.6%Largest-city concentration · Paris

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

1,464

11-50

663

51-200

215

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

19,6280–30

1,32831–60

361–90

390–180

113180+

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 software engineering 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 “software engineering 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 software engineering 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 software engineering 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, 21,075 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 6, 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.

Software engineering 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 software engineering 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 software engineering consulting firms are there based in France?

RevenueBase identified 2,425 software engineering 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?

Groupe SII, headquartered in Paris, tops this list with the largest team on record.

Which city has the most software engineering consulting firms?

Paris leads with 620 headquartered companies, followed by Lyon (103) and Toulouse (45).

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 21,075 verified decision-maker contacts tracked across these 2,425 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 6, 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.