Company lists · Data refreshed September 2026

Top 25 Api development consulting firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 154 companies tracked

RevenueBase identified 154 api development consulting firms headquartered in France as of September 2026 and tracks 2,975 professional contacts across them, including 1,041 with verified work emails. Paris is the largest hub.

This list covers api development 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 27, 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 27, 2026 86% judged on-target in blind review

154Companies

2,975Contacts tracked

1,041Verified emails

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The 25 largest api development consulting firms based in France

Ranked by team size

Top 25 of 154 api development consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to api development 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	SFEIR	Indirect evidence	Neuilly-sur-seine, FranceHQ checked Sep 27, 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 27, 2026
2	MARGO	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	201-500	174 contacts →
	Partial evidence “More than a simple IT consulting group, MARGO is an alchemy of talents with constantly enriched expertise, always encouraged to be dynamic and to flourish.” Source: RevenueBase Database · checked Sep 27, 2026
3	5 Degrés	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	141 contacts →
	Indirect evidence “5 Degrés est une agence de conseil experte en Produit digital et Data.” Source: RevenueBase Database · checked Sep 27, 2026
4	Aubay Data & AI	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 27, 2026	201-500	94 contacts →
	Indirect evidence “Aubay Data & AI est le cabinet de conseil spécialiste de la Data et de l’Intelligence Artificielle du Groupe Aubay.” Source: RevenueBase Database · checked Sep 27, 2026
5	Thélio	Indirect evidence	Bordeaux, FranceHQ checked Sep 27, 2026	51-200	85 contacts →
	Indirect evidence “Chez Thélio, nous transformons la donnée en un véritable levier de performance.” Source: RevenueBase Database · checked Sep 27, 2026
6	Exomind	Indirect evidence	Boulogne-billancourt, FranceHQ checked Sep 27, 2026	51-200	69 contacts →
	Indirect evidence “EXOMIND est une agence de conseil spécialisée dans la conception et le développement d'applications mobiles et plateformes web.” Source: RevenueBase Database · checked Sep 27, 2026
7	Neoxia	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	201-500	62 contacts →
	Indirect evidence “Since octobre 2023, Neoxia is a Deloitte business!” Source: RevenueBase Database · checked Sep 27, 2026
8	L'atelier	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	60 contacts →
	Indirect evidence “L’Atelier est une société de conseil tech au service des entreprises pour la création de produits web et mobiles.” Source: RevenueBase Database · checked Sep 27, 2026
9	Diggers	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	58 contacts →
	Indirect evidence “Diggers est un cabinet de conseil facilitateur de projets et de transformations, spécialisé dans les métiers de l'IT (développement, data & IA, devops, cloud) et une agence de…” Source: RevenueBase Database · checked Sep 27, 2026
10	Guimini	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	51 contacts →
	Indirect evidence “Guimini est une société de conseil spécialisée dans l’intégration Salesforce, la stratégie Data & IA, et le développement d'applications métiers.” Source: RevenueBase Database · checked Sep 27, 2026
11	Smart Teem	Partial evidence	Rueil-malmaison, FranceHQ checked Sep 27, 2026	11-50	33 contacts →
	Partial evidence “SMART TEEM est un cabinet de consulting pure-player Data & AI.” Source: RevenueBase Database · checked Sep 27, 2026
12	Omicrone	Strong evidence	La Garenne Colombes, FranceHQ checked Sep 27, 2026	51-200	33 contacts →
	Strong evidence “OMICRONE is a consulting and engineering company in new technologies, supporting its clients in the design, development and maintenance of their applications.” Source: RevenueBase Database · checked Sep 27, 2026
13	We ARE Beebay	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	27 contacts →
	Partial evidence “We Are Beebay is an IT consulting agency.” Source: RevenueBase Database · checked Sep 27, 2026
14	Groupbees	Partial evidence	Paris, FranceHQ checked Sep 27, 2026	51-200	25 contacts →
	Partial evidence “GroupBees est un cabinet de conseil en informatique fondé en 2019, spécialisé dans le Cloud, la Data, l'Automatisation de systèmes et l'API Management.” Source: RevenueBase Database · checked Sep 27, 2026
15	Accetal	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	24 contacts →
	Indirect evidence “At Accetal, our fundamental mission is to transform the technological landscape with a focus on the human element.” Source: RevenueBase Database · checked Sep 27, 2026
16	BIG Apps	Indirect evidence	Rosny-sous-bois, FranceHQ checked Sep 27, 2026	11-50	21 contacts →
	Indirect evidence “Nous sommes une entreprise spécialisée dans la gestion des données, composée d'une équipe de plus de 30 experts.” Source: RevenueBase Database · checked Sep 27, 2026
17	ESENS	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	21 contacts →
	Indirect evidence “ESENS accompagne l'innovation technologique de ses clients et l'évolution professionnelle de ses équipes à Paris, Bordeaux, Nantes, Lille, Lyon, Caen et Rennes.” Source: RevenueBase Database · checked Sep 27, 2026
18	Archytas Conseil	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	1-10	18 contacts →
	Indirect evidence “Archytas Conseil est un cabinet organisé autour de trois practices, conseil, intégrations, recrutement et sourcing Practices Conseil : Nos expertises : • Organisation, nearshoring…” Source: RevenueBase Database · checked Sep 27, 2026
19	Jasmine Conseil	Indirect evidence	Chatou, FranceHQ checked Sep 27, 2026	11-50	18 contacts →
	Indirect evidence “Jasmine Conseil est une société spécialisée dans le conseil et l’expertise en systèmes et logiciels informatiques.” Source: RevenueBase Database · checked Sep 27, 2026
20	Askills Expertise Data	Indirect evidence	Lyon, FranceHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “Askills est un cabinet de conseil en informatique spécialisé dans les métiers de la Data sur toute la chaine du traitement de données.” Source: RevenueBase Database · checked Sep 27, 2026
21	Nuterms	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “dans un marché stéréotypé du conseil et de la transformation digitale, nous redéfinissons les termes de l’engagement à l’égard des clients et des talents.” Source: RevenueBase Database · checked Sep 27, 2026
22	Okatim	Indirect evidence	Lyon, FranceHQ checked Sep 27, 2026	51-200	14 contacts →
	Indirect evidence “Okatim est une société de conseil spécialisée dans les métiers du développement logiciel, de la data, de l'infrastructure et de la gestion de projets agiles.” Source: RevenueBase Database · checked Sep 27, 2026
23	Naoplay	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	14 contacts →
	Indirect evidence “Naoplay helps companies prepare their IT systems for the era of data and AI.” Source: RevenueBase Database · checked Sep 27, 2026
24	RÆDY	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	13 contacts →
	Indirect evidence “En fédérant les meilleures expertises de l'IT, du Digital, du Marketing et de la Communication, Rædy vous accompagne dans l'accélération digitale pour contribuer activement à…” Source: RevenueBase Database · checked Sep 27, 2026
25	50a	Indirect evidence	Paris, FranceHQ checked Sep 27, 2026	11-50	10 contacts →
	Indirect evidence “At 50A, we help companies navigate digital complexity by combining strategy, creativity, and innovation.” Source: RevenueBase Database · checked Sep 27, 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: api development 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 api development consulting firms.
Partial evidence: Its own public description names part of api development consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name api development 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 154 api development consulting firms based in France

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Api development consulting firms based in France at a glance

As of Sep 27, 2026

35.0%Verified-email coverage

19.3Average contacts per company

1-10Median size (employees)

42.2%Largest-city concentration · Paris

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 154 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 api development 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 “api development 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 api development 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 api development 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, 1,041 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 27, 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.

Api development consulting firms by metro

Api development consulting firms in Paris65

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 api development 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 api development consulting firms are there based in France?

RevenueBase identified 154 api development 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?

SFEIR, headquartered in Neuilly-Sur-Seine, tops this list with the largest team on record.

Which city has the most api development consulting firms?

Paris leads with 65 headquartered companies, followed by Lyon (7) and Boulogne-Billancourt (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 1,041 verified decision-maker contacts tracked across these 154 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 27, 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.