Company lists · Data refreshed September 2026

Top 25 Professional outsourcing services based in Switzerland

Name: Professional outsourcing services based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 156 companies tracked

RevenueBase identified 156 professional outsourcing services headquartered in Switzerland as of September 2026 and tracks 822 professional contacts across them, including 252 with verified work emails. Zurich is the largest hub.

This list covers professional outsourcing services headquartered in Switzerland, 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 21, 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 21, 2026 86% judged on-target in blind review

156Companies

822Contacts tracked

252Verified emails

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The 25 largest professional outsourcing services based in Switzerland

Ranked by team size

Top 25 of 156 professional outsourcing services based in Switzerland, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to professional outsourcing services: 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	Avanta	Indirect evidence	Baar, SwitzerlandHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence “Accounting, Audit, HR, Tax, Legal and Insurance: Our specialists take over all services along your value chain, allowing you to focus fully on your core competencies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Baruti AG	Partial evidence	Zug, SwitzerlandHQ checked Sep 21, 2026	201-500	59 contacts →
	Partial evidence “Baruti is a company specialized in outsourcing services, providing nearshore solutions for clients in Germany, Switzerland, and the UK.” Source: RevenueBase Database · checked Sep 21, 2026
3	KLOON	Partial evidence	Zug, SwitzerlandHQ checked Sep 21, 2026	51-200	41 contacts →
	Partial evidence “Our global team provides high quality outsourcing services for our international customers.” Source: RevenueBase Database · checked Sep 21, 2026
4	HR Andrist Gmbh	Indirect evidence	Reinach, SwitzerlandHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “HR Andrist GmbH ist deine externe Personalabteilung und unterstützt dauerhaft oder ad interim im Bereich Personaladministration, Lohn, Rekrutierung und weiteren HR Projekten.” Source: RevenueBase Database · checked Sep 21, 2026
5	HRSC	Indirect evidence	Bern, SwitzerlandHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Seit unserer Gründung im Jahr 2013 in Bern bietet HRSC umfassende HR-Services für mittelständische und grosse Unternehmen, Non-Profit-Organisationen sowie öffentliche Verwaltungen…” Source: RevenueBase Database · checked Sep 21, 2026
6	Work24.com AG	Indirect evidence	Sankt Gallen, SwitzerlandHQ checked Sep 21, 2026	501-1,000	23 contacts →
	Indirect evidence “work24.com ag ist eine Personalberatung mit Kernkompetenzen in Arbeitsvermittlung, flexibler Personalverleih, Personaltreuhand sowie On-Site Management.” Source: RevenueBase Database · checked Sep 21, 2026
7	WAMAG	Partial evidence	Sursee, SwitzerlandHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Wir sind seit 30 Jahren der führende Outsourcing-Partner für Nonprofit-Organisationen in der Schweiz.” Source: RevenueBase Database · checked Sep 21, 2026
8	CV Consulting Sàrl	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 21, 2026	11-50	18 contacts →
	Partial evidence “Notre société est spécialisée dans l’outsourcing des transactions dans les domaines de gestion comptable, gestion des ressources humaines, gestion de votre administration.” Source: RevenueBase Database · checked Sep 21, 2026
9	Quadrigis SA	Indirect evidence	Yverdon-les-bains, SwitzerlandHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Spécialisée dans le domaine de la sous-traitance comptable et administrative des agences de placement et de location de services, Quadrigis a développé ses propres outils…” Source: RevenueBase Database · checked Sep 21, 2026
10	Carloni Consulting AG	Indirect evidence	Sankt Gallen, SwitzerlandHQ checked Sep 21, 2026	1-10	11 contacts →
	Indirect evidence “Lohn- und Personaladministration nach Mass: zuverlässig, schnell und sicher Die Mitarbeitenden sind das wichtigste Kapital Ihres Unternehmens: ihre Qualifikation, Motivation und…” Source: RevenueBase Database · checked Sep 21, 2026
11	AZI Services AG	Indirect evidence	Pratteln, SwitzerlandHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Kompetente MitarbeiterInnen für Ihre Projekte Ohne verlässliche und kompetente MitarbeiterInnen ist es langfristig schier unmöglich die gewünschten Ziele zu erreichen.” Source: RevenueBase Database · checked Sep 21, 2026
12	Gasser Wepf & Partner AG	Indirect evidence	Meilen, SwitzerlandHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Kompetent, engagiert und unabhängig setzen wir alles daran, Sie persönlich zu beraten und auf Ihre individuellen Bedürfnisse einzugehen.” Source: RevenueBase Database · checked Sep 21, 2026
13	Veriduna Treuhand AG	Indirect evidence	Dübendorf, SwitzerlandHQ checked Sep 21, 2026	11-50	8 contacts →
	Indirect evidence “Veriduna Treuhand AG is a financial services company based out of Stettbachstrasse 6, Dübendorf, Canton of Zurich, Switzerland.” Source: RevenueBase Database · checked Sep 21, 2026
14	HC Solutions AG	Partial evidence	Zürich, SwitzerlandHQ checked Sep 21, 2026	11-50	8 contacts →
	Partial evidence “We support you in all areas of operational personnel management with tailor-made outsourcing solutions, staying in personal contact with you and focusing entirely on your needs.” Source: RevenueBase Database · checked Sep 21, 2026
15	Payroll House	Indirect evidence	Basel, SwitzerlandHQ checked Sep 21, 2026	51-200	7 contacts →
	Indirect evidence “Wir sind spezialisiert im Umgang mit Contractors, Expats, Freelancern und Arbeitnehmenden.” Source: RevenueBase Database · checked Sep 21, 2026
16	Shareau Office Management	Indirect evidence	Rotkreuz, SwitzerlandHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Das "Shared Bureau" Noch nie war es so einfach, Bürodienstleistungen auf Abruf zu erhalten – alle aus einer Hand.” Source: RevenueBase Database · checked Sep 21, 2026
17	HR Consulting Wehrli Gmbh	Indirect evidence	Brugg, SwitzerlandHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Als externe Personalabteilung (Human Resources) für Start-up und KMU stehen wir, mit unserer über 25 jährigen HR Erfahrung, den Unternehmen für eine langfristige Zusammenarbeit…” Source: RevenueBase Database · checked Sep 21, 2026
18	Fiduciaire Revigest SA	Indirect evidence	Bulle, SwitzerlandHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Notre personnel compétent vous assiste dans toutes les questions d'administration et de gestion.” Source: RevenueBase Database · checked Sep 21, 2026
19	Infeas AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 21, 2026	11-50	4 contacts →
	Indirect evidence “Infeas bietet Unternehmen individuelle Lösungen im Bereich Finanzen und den damit verbundenen Themen, somit können Sie sich auf ihr Kerngeschäft konzentrieren.” Source: RevenueBase Database · checked Sep 21, 2026
20	Ogisa SA	Indirect evidence	Châtel-st-denis, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Souhaitez-vous optimiser vos résultats, analyser vos processus ou évaluer vos équipes?” Source: RevenueBase Database · checked Sep 21, 2026
21	Baechler Fidu-Rh	Indirect evidence	Givisiez, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Savoir s’entourer des bonnes personnes et de leurs meilleures compétences est un des fondements de la réussite des entreprises.” Source: RevenueBase Database · checked Sep 21, 2026
22	Avenia Gmbh	Indirect evidence	Grüningen, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Weil uns Büroarbeit Freude bereitet!” Source: RevenueBase Database · checked Sep 21, 2026
23	SDC Solutions Sàrl	Indirect evidence	Collombey-muraz, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Partenaire de services admin et RH, avec Brevet Fédéral, SdC Solutions Sàrl dispose du savoir-faire dont votre entreprise a besoin pour relever les défis auxquels elle fait face.” Source: RevenueBase Database · checked Sep 21, 2026
24	Bruhin Personal AG	Indirect evidence	Altendorf, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Bruhin Personal AG verleiht nicht nur Fachkräfte, sondern sorgt für Entlastung, um Spitzen zu brechen.” Source: RevenueBase Database · checked Sep 21, 2026
25	CAC SA	Indirect evidence	Lutry, SwitzerlandHQ checked Sep 21, 2026	1-10	4 contacts →
	Indirect evidence “Après avoir dirigé la société Trianon SA pendant plus de 20 ans (administration ressources humaines pour sociétés de grande taille), nous avons terminé avec succès notre mission…” Source: RevenueBase Database · checked Sep 21, 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: professional outsourcing services. 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 professional outsourcing services.
Partial evidence: Its own public description names part of professional outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional outsourcing services. 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 156 professional outsourcing services based in Switzerland

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Professional outsourcing services based in Switzerland at a glance

As of Sep 21, 2026

30.7%Verified-email coverage

5.3Average contacts per company

1-10Median size (employees)

7.7%Largest-city concentration · Zurich

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

120

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 156 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 professional outsourcing services, 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 Switzerland whose own description of what they do matches “professional outsourcing services”. 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 professional outsourcing services), 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 professional outsourcing services, and records with no verified work email. Companies headquartered outside Switzerland 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, 252 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 21, 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 professional outsourcing services, 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 professional outsourcing services are there based in Switzerland?

RevenueBase identified 156 professional outsourcing services headquartered in Switzerland 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?

Avanta, headquartered in Baar, tops this list with the largest team on record.

Which city has the most professional outsourcing services?

Zurich leads with 12 headquartered companies, followed by Geneve (11) and Bern (5).

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 252 verified decision-maker contacts tracked across these 156 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 21, 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.