Company lists · Data refreshed September 2026

Top 25 Engineering outsourcing companies based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 556 companies tracked

RevenueBase identified 556 engineering outsourcing companies headquartered in France as of September 2026 and tracks 15,552 professional contacts across them, including 5,506 with verified work emails and 291 with mobile numbers. Paris is the largest hub.

This list covers engineering outsourcing 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 24, 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 24, 2026 86% judged on-target in blind review

556Companies

15,552Contacts tracked

5,506Verified emails

291Mobile numbers

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The 25 largest engineering outsourcing companies based in France

Ranked by team size

Top 25 of 556 engineering outsourcing companies based in France, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering outsourcing 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	ALTEN	Indirect evidence	Boulogne-billancourt Cedex, FranceHQ checked Sep 24, 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 24, 2026
2	Groupe SII	Indirect evidence	Paris, FranceHQ checked Sep 24, 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 24, 2026
3	Infotel	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 24, 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 24, 2026
4	Apside	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 24, 2026	1,001-5,000	1,537 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 24, 2026
5	Solutec	Partial evidence	Villeurbanne, FranceHQ checked Sep 24, 2026	1,001-5,000	1,459 contacts →
	Partial evidence “SOLUTEC: An IT Services Company SOLUTEC is an IT services company specialized in engineering, consulting and services.” Source: RevenueBase Database · checked Sep 24, 2026
6	T&s Technology & Strategy	Indirect evidence	Schiltigheim, FranceHQ checked Sep 24, 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 24, 2026
7	SFEIR	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 24, 2026	501-1,000	904 contacts →
	Indirect evidence “SFEIR est une Société d’expertise spécialisée dans le développement d’applications sous toutes leurs formes ( web, mobile, IOT, cloud, data, etc.).” Source: RevenueBase Database · checked Sep 24, 2026
8	Viveris	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 24, 2026	1,001-5,000	833 contacts →
	Partial evidence “Viveris is a consulting and engineering company with two main activities - IT consulting.” Source: RevenueBase Database · checked Sep 24, 2026
9	Parlym	Partial evidence	Estaque, FranceHQ checked Sep 24, 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 24, 2026
10	Groupe Intm	Indirect evidence	Levallois-perret, FranceHQ checked Sep 24, 2026	1,001-5,000	714 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 24, 2026
11	ABMI	Indirect evidence	Nanterre, FranceHQ checked Sep 24, 2026	501-1,000	661 contacts →
	Indirect evidence “Nous sommes une entreprise d’ingénierie multi spécialiste au cœur des grands enjeux autour de la mobilité, de l’énergie, de la santé et des produits et biens de consommation.” Source: RevenueBase Database · checked Sep 24, 2026
12	MCA	Partial evidence	Levallois-perret, FranceHQ checked Sep 24, 2026	1,001-5,000	648 contacts →
	Partial evidence “MCA is an international engineering and high-tech company that empowers talent and partners with top companies to realize cutting-edge projects.” Source: RevenueBase Database · checked Sep 24, 2026
13	Klanik	Partial evidence	Marseille, FranceHQ checked Sep 24, 2026	501-1,000	585 contacts →
	Partial evidence “KLANIK is a consulting company specialized in IT Engineering which accompanies its partners in their digital and technological projects.” Source: RevenueBase Database · checked Sep 24, 2026
14	Arkance	Partial evidence	Saint-denis, FranceHQ checked Sep 24, 2026	1,001-5,000	563 contacts →
	Partial evidence “ARKANCE is a global partner in digital and operational transformation for the architecture, engineering, construction, and manufacturing industries.” Source: RevenueBase Database · checked Sep 24, 2026
15	Sully Group	Indirect evidence	Saint-priest, FranceHQ checked Sep 24, 2026	501-1,000	560 contacts →
	Indirect evidence “Sully Group : Working together to create a useful and sustainable digital environment > 1 global digital services offering: Business Applications, Mobile Applications…” Source: RevenueBase Database · checked Sep 24, 2026
16	Meritis	Indirect evidence	Paris, FranceHQ checked Sep 24, 2026	501-1,000	549 contacts →
	Indirect evidence “Meritis is a consulting firm specializing in the digital transformation of organizations, co-founded in 2007 by Sébastien Videment.” Source: RevenueBase Database · checked Sep 24, 2026
17	Zenika	Indirect evidence	Paris, FranceHQ checked Sep 24, 2026	501-1,000	430 contacts →
	Indirect evidence “Zenika is an IT consulting firm with 550 employees that helps companies with their digital transformation.” Source: RevenueBase Database · checked Sep 24, 2026
18	Objectware	Partial evidence	Paris, FranceHQ checked Sep 24, 2026	501-1,000	395 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 24, 2026
19	Conserto	Indirect evidence	Saint-herblain, FranceHQ checked Sep 24, 2026	201-500	378 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 24, 2026
20	Cleeven	Indirect evidence	Lyon, FranceHQ checked Sep 24, 2026	501-1,000	359 contacts →
	Indirect evidence “QUI SOMMES NOUS?@CLEEVEN, cabinet de conseil en ingénierie, s'est construit autour de 2 convictions extrêmement fortes - L'excellence des Ingénieurs européens doit permettre à…” Source: RevenueBase Database · checked Sep 24, 2026
21	Noveo Group	Indirect evidence	Paris, FranceHQ checked Sep 24, 2026	501-1,000	327 contacts →
	Indirect evidence “The Noveo group has specialized in design, development and maintenance of digital solutions since 1998.” Source: RevenueBase Database · checked Sep 24, 2026
22	Kaizen Solutions KZS	Indirect evidence	Montbonnot-saint-martin, FranceHQ checked Sep 24, 2026	201-500	261 contacts →
	Indirect evidence “Nous sommes une ESN (entreprise de services numériques) spécialisée dans la conception, le développement et la maintenabilité de solutions informatiques, techniques et…” Source: RevenueBase Database · checked Sep 24, 2026
23	Ouidou	Indirect evidence	Paris, FranceHQ checked Sep 24, 2026	201-500	252 contacts →
	Indirect evidence “Fondée en 2017, Ouidou est une entreprise de services du numérique regroupant plus de 250 collaborateurs.” Source: RevenueBase Database · checked Sep 24, 2026
24	Avisto	Indirect evidence	Valbonne, FranceHQ checked Sep 24, 2026	201-500	226 contacts →
	Indirect evidence “The software development: your passion, our profession.” Source: RevenueBase Database · checked Sep 24, 2026
25	Younup	Indirect evidence	Nantes, FranceHQ checked Sep 24, 2026	201-500	225 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 24, 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: engineering outsourcing 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 engineering outsourcing companies.
Partial evidence: Its own public description names part of engineering outsourcing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering outsourcing 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 556 engineering outsourcing companies based in France

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Engineering outsourcing companies based in France at a glance

As of Sep 24, 2026

35.4%Verified-email coverage

1.9%Mobile-number coverage

28.0Average contacts per company

1-10Median size (employees)

58.1%Largest-city concentration · Paris

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

684

11-50

405

51-200

153

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 26.0d

4,1960–30

1,21331–60

8661–90

090–180

11180+

Company record updated

Median 83.0d

00–30

4,01931–60

7,69261–90

3,17190–180

670180+

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 engineering outsourcing 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 “engineering outsourcing 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 engineering outsourcing 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 engineering outsourcing 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, 5,506 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 24, 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.

Engineering outsourcing companies 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 engineering outsourcing 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 engineering outsourcing companies are there based in France?

RevenueBase identified 556 engineering outsourcing 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?

ALTEN, headquartered in Boulogne-Billancourt Cedex, tops this list with the largest team on record.

Which city has the most engineering outsourcing companies?

Paris leads with 323 headquartered companies, followed by Lyon (54) and Toulouse (27).

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 5,506 verified decision-maker contacts tracked across these 556 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 24, 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.