Company lists · Data refreshed September 2026

Top 21 Back office outsourcing companies based in Germany

RevenueBase identified 67 back office outsourcing companies headquartered in Germany as of September 2026 and tracks 1,020 professional contacts across them, including 109 with verified work emails. Berlin is the largest hub.

This list covers back office outsourcing companies headquartered in Germany, 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 14, 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 14, 2026 86% judged on-target in blind review
67Companies
1,020Contacts tracked
109Verified emails
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The 21 largest back office outsourcing companies based in Germany

Ranked by team size
Top 21 of 67 back office outsourcing companies based in Germany, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to back office 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceNuremberg, GermanyHQ checked Sep 14, 20265,001-10,000359 contacts →

Partial evidence

“The SELLBYTEL Group is one of the worldwide leading outsourcing specialists and part of Webhelp.”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceBerlin, GermanyHQ checked Sep 14, 20261,001-5,000116 contacts →

Indirect evidence

“Die CMX Solutions GmbH ist Teil der CMX Group, einem inhabergeführten Unternehmen, das seit der Gründung im Jahr 2012 kontinuierlich zu einem führenden Anbieter von…”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceOberhausen, GermanyHQ checked Sep 14, 2026501-1,00056 contacts →

Indirect evidence

“Gegründet um anders zu sein.”

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceAugsburg, GermanyHQ checked Sep 14, 202651-20036 contacts →

Indirect evidence

“Werden Sie unser Partner, denn wir sind Ihr Dienstleister mit dem echten Servicegedanken.”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceMunich, GermanyHQ checked Sep 14, 202651-20018 contacts →

Indirect evidence

“Our mission is to deliver top-notch BPO services, blending cost-effectiveness with uncompromising quality while prioritising favourable working conditions, treating every employee…”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidenceBacknang, GermanyHQ checked Sep 14, 202611-5014 contacts →

Indirect evidence

“Willkommen bei Mpire – dem zentralen Corporate-Services-Partner der RIVA GmbH Engineering und damit verbundener Unternehmen.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceBerlin, GermanyHQ checked Sep 14, 2026201-50012 contacts →

Partial evidence

“Die ETL Business Services Steuerberatungsgesellschaft mbH ist Ihr zuverlässiger, kompetenter und effizienter Partner für das komplette oder teilweise Outsourcing Ihrer…”

Source: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceBerlin, GermanyHQ checked Sep 14, 202611-5012 contacts →

Indirect evidence

“Als Experte für Personalabrechnungen begleiten wir seit mehr als 30 Jahren bundesweit Kunden unterschiedlichster Branchen und Größen.”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceCologne, GermanyHQ checked Sep 14, 202611-5011 contacts →

Indirect evidence

“BackOfficer bietet BackOffice as a Service an.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceWiesbaden, GermanyHQ checked Sep 14, 202611-508 contacts →

Partial evidence

“Die Kell Outsourcing GmbH mit Sitz in Wiesbaden bietet mittelständischen Unternehmen die Auslagerung des Rechnungswesens an.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceBielefeld, GermanyHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

“Übertragen Sie Ihre Dienstleistungsprozesse an uns und gewinnen Sie so neue Ressourcen für Ihr Kerngeschäft.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceLeonberg, GermanyHQ checked Sep 14, 202611-507 contacts →

Partial evidence

“Maßgeschneiderte Services für Ihre Entgeltabrechnung Die APM Personal Service GmbH ist ein Anbieter von Dienstleistungen für das Outsourcing von Entgeltabrechnungen.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceIngolstadt, GermanyHQ checked Sep 14, 202651-2007 contacts →

Indirect evidence

“Buchhaltung, qualitätsmanagement, personalsuche: Vertrauen Sie auf unsere Backoffice-Spezialisten!”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceEssen, GermanyHQ checked Sep 14, 20261-105 contacts →

Indirect evidence

“Wir verhelfen dir zu mehr Zeit im Kerngeschäft.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceBubenheim, GermanyHQ checked Sep 14, 202611-505 contacts →

Indirect evidence

“Stellen Sie sich vor, Sie hätten mehr Zeit für Ihr Kerngeschäft und könnten sich auf das konzentrieren, was Sie und Ihr Unternehmen wirklich voranbringt.”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceHannover, GermanyHQ checked Sep 14, 2026501-1,0004 contacts →

Indirect evidence

“ECIT ist ein globaler Dienstleister in den Bereichen Rechnungswesen, Personalabrechnung und Prozessautomatisierung, der sich zum Ziel gesetzt hat, intelligenter, schneller und…”

Source: RevenueBase Database · checked Sep 14, 2026
17Indirect evidenceLangen, GermanyHQ checked Sep 14, 20261-103 contacts →

Indirect evidence

“Begrenzte personelle Kapazitäten, permanente regulatorische und gesetzliche Änderungen und Neuerungen sowie der damit verbundene Termindruck zwingen kleinere und mittelgroße…”

Source: RevenueBase Database · checked Sep 14, 2026
18Indirect evidenceGreifenstein, GermanyHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Was passiert, wenn du alles selbst machst?”

Source: RevenueBase Database · checked Sep 14, 2026
19Strong evidenceWaldaschaff, GermanyHQ checked Sep 14, 20261-102 contacts →

Strong evidence

“Mit unserem Leistungsangebot und unserer langjährigen Erfahrung im Bereich Back Office, bieten wir den oben genannten Unternehmen die Chance, sich kapazitätsmäßig auf Ihre…”

Source: RevenueBase Database · checked Sep 14, 2026
20Indirect evidenceMelle-neuenkirchen, GermanyHQ checked Sep 14, 202611-501 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 14, 2026
21Indirect evidenceGarching B. München, GermanyHQ checked Sep 14, 20261-101 contacts →

Indirect evidence

“Digitale Ablage, Dateneingaben, Schreiben nach Diktat und mehr.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 21 of 67 back office outsourcing companies based in Germany

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Back office outsourcing companies based in Germany at a glance

As of Sep 14, 2026
10.7%Verified-email coverage
15.2Average contacts per company
11-50Median size (employees)
13.4%Largest-city concentration · Berlin
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
19
51-200
7
201-500
2
501-1,000
2
1,001-5,000
2
5,001-10,000
2

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 67 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 back office 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 Germany whose own description of what they do matches “back office 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 back office 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 back office outsourcing companies, and records with no verified work email. Companies headquartered outside Germany 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, 109 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 14, 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 back office 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 back office outsourcing companies are there based in Germany?

RevenueBase identified 67 back office outsourcing companies headquartered in Germany 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?

Sellbytel Group, headquartered in Nuremberg, tops this list with the largest team on record.

Which city has the most back office outsourcing companies?

Berlin leads with 9 headquartered companies, followed by Hannover (4) and Leonberg (3).

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 109 verified decision-maker contacts tracked across these 67 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 14, 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.