Company lists · Data refreshed September 2026

Top 15 Transaction processing outsourcing consultants based in France

RevenueBase identified 35 transaction processing outsourcing consultants headquartered in France as of September 2026 and tracks 627 professional contacts across them, including 230 with verified work emails. Paris is the largest hub.

This list covers transaction processing outsourcing consultants 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 29, 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 29, 2026 86% judged on-target in blind review
35Companies
627Contacts tracked
230Verified emails
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The 15 largest transaction processing outsourcing consultants based in France

Ranked by team size
Top 15 of 35 transaction processing outsourcing consultants based in France, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to transaction processing outsourcing consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceLa Défense Paris, FranceHQ checked Sep 29, 2026201-500263 contacts →

Indirect evidence

“We support financial institutions, merchants and payment industry players in transforming their payment services to make them simple, efficient and secure in everyday life.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceParis, FranceHQ checked Sep 29, 202651-20078 contacts →

Indirect evidence

“Founded in 2001, Oaklen Consulting is an independent consulting and auditing firm specialising in payments.”

Source: RevenueBase Database · checked Sep 29, 2026
3Indirect evidenceNeuilly-sur-marne, FranceHQ checked Sep 29, 202651-20060 contacts →

Indirect evidence

“PARTELYA Consulting est une entreprise de conseil spécialisée dans la Monétique et les Moyens de Paiement basée en Ile de France.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceIssy-les-moulineaux, FranceHQ checked Sep 29, 202651-20033 contacts →

Partial evidence

“SYRTALS was founded in 1997 by a team of consultants in the payments industry and cash management.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceÉvry, FranceHQ checked Sep 29, 202611-505 contacts →

Indirect evidence

“Vous recherchez des profils spécialisés en monétique pour réaliser des missions en régie ou au forfait ou bien renforcer votre équipe pour prendre en charge un projet lié aux…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceParis, FranceHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Société de Conseil spécialisée en management et Systèmes d'Information - domaine bancaire - échanges Banques/Entreprises - flux bancaires et financiers (SWIFT, TARGET2, SEPA)…”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceColombelles, FranceHQ checked Sep 29, 20261-104 contacts →

Indirect evidence

“Accompagner et aider nos Clients à relever les nouveaux challenges dans le domaine du paiement et des nouvelles technologies sont les objectifs d’AO CONCEPT.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceLevallois-perret, FranceHQ checked Sep 29, 202611-504 contacts →

Indirect evidence

“OMEGA CONNECT a été créée dans le prolongement d'OMEGA WEB pour réunir toutes les expertises de nos équipes tournées vers l'externalisation de la relation clients et du traitement…”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceChassieu, FranceHQ checked Sep 29, 20261-103 contacts →

Indirect evidence

“GROLLE SERVICES is a financial services company based out of 7 RUE JACQUARD, CHASSIEU, France.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceParis, FranceHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“White'In est un cabinet de conseil indépendant spécialisé dans les domaines de la monétique, des moyens de paiement, du e-commerce et des parcours clients jusqu’à l’encaissement.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceParis, FranceHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“FINAE CONSEIL est un cabinet de conseil spécialisé dans le domaine des Moyens de paiements, du SEPA et du Cash Management.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceParis, FranceHQ checked Sep 29, 202611-502 contacts →

Indirect evidence

“HART GROUP est une société de conseil regroupant des experts métiers spécialisés sur les secteurs: • Paiements et Cash Management • Gestion de trésorerie • Monétique • Trade…”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceCraponne, FranceHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“IziSanté propose un service d'externalisation de la gestion du tiers-payant pour les opticiens.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceParis, FranceHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Our expert team can help your business on all dimensions of payments- Optimize Payment Cost - On average our clients are saving 17% on their monthly payment bills - Optimize…”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceAix-en-provence, FranceHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Hi, we are GatePay.fr!”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 15 of 35 transaction processing outsourcing consultants based in France

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Transaction processing outsourcing consultants based in France at a glance

As of Sep 29, 2026
36.7%Verified-email coverage
17.9Average contacts per company
11-50Median size (employees)
37.1%Largest-city concentration · Paris
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
11
51-200
6
201-500
1
5,001-10,000
1

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 35 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 transaction processing outsourcing consultants, 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 “transaction processing outsourcing consultants”. 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 transaction processing outsourcing consultants), 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 transaction processing outsourcing consultants, 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, 230 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 29, 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 transaction processing outsourcing consultants, 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 transaction processing outsourcing consultants are there based in France?

RevenueBase identified 35 transaction processing outsourcing consultants 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?

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

Which city has the most transaction processing outsourcing consultants?

Paris leads with 13 headquartered companies, followed by Courbevoie (2) and Issy-Les-Moulineaux (2).

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 230 verified decision-maker contacts tracked across these 35 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 29, 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.