Company lists · Data refreshed September 2026
Top 23 Outsourcing services companies based in Switzerland
RevenueBase identified 57 outsourcing services companies headquartered in Switzerland as of September 2026 and tracks 3,685 professional contacts across them, including 1,300 with verified work emails. Zurich is the largest hub.
This list covers outsourcing services companies 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 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.
The 23 largest outsourcing services companies based in Switzerland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,833 contacts → | ||||
Indirect evidence “Business models are being redefined.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 168 contacts → | ||||
Indirect evidence “At FRISTA we see ourselves as a company which truly cares about our clients, people, and applies the latest technology to promote a sustainable and long-term culture of innovation…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 143 contacts → | ||||
Strong evidence “As a leading partner for input, output and outsourcing solutions, we support companies in exploiting the potential of digital transformation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 59 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 45 contacts → | ||||
Strong evidence “IT Consulting - IT Services - IT Outsourcing - IT Consulting - IT Services - IT Outsourcing- IT Consulting - IT Services - IT Outsourcing- IT Consulting - IT Services - IT…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 41 contacts → | ||||
Strong evidence “Our global team provides high quality outsourcing services for our international customers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 41 contacts → | ||||
Indirect evidence “Data Conversion Service SA, referred to henceforth as “DCS” is a service company based in Geneva, Switzerland, since 1973.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Strong 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 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 13 contacts → | ||||
Indirect evidence “Based in Geneva (HQ) and Singapore, operating in more than 30 countries, PSiDEO provides a wide range of premium outsourced IT services to global customers, as well as the…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Strong evidence “Osy provides Business Process Outsourcing and Business Process Automation in one solution.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 11 contacts → | ||||
Indirect evidence “OMNE VOUS PROPOSE DES SERVICES EXPERTS DE CONSEIL ET D'EXTERNALISATION EN INFOGÉRANCE INFORMATIQUE, TÉLÉPHONIE ET CLOUD Les compétences spécialisées de notre réseau de partenaires…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 8 contacts → | ||||
Strong evidence “Gaapex is specialized in financial and accounting outsourcing services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “De nos jours, numériser son entreprise est devenu un passage obligé, une étape incontournable pour pérenniser la qualité de son offre de services et préserver son image de marque.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Indirect evidence “acc solutions AG (Advanced Customer Care Solutions AG) is your partner for business process solutions, efficiency, CRM, Ticketing, Knowhow Management.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Strong evidence “Petatec GmbH is an independent Swiss consulting and technology company specializing in IT Transformation, Outsourcing, Interim Management, Cost Optimization and Digital Innovation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “IOC Group was founded by established companies with the aim of serving financial service providers in all aspects of investment operations and compliance.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Strong evidence “Absolut kundenorientiertes Outsourcing in den Bereichen IT, Finanzen, Kundendienst.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Strong evidence “Experzo ist Ihr unabhängiger Outsourcing Partner für Unternehmensdienstleistungen.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Indirect evidence “AOCS GmbH ist spezialisiert auf Dienstleistungen für kleine und mittlere Unternehmen (KMU).” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Indirect evidence “Finaxio est une société de services où vous pouvez externaliser vos besoins en matière de direction financière.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “büro & chram verfügt über langjährige Erfahrung in den Bereichen Administration, Marketing & Personal und bietet Dienstleistungen für KMU's die flexibel bleiben wollen, kein…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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: outsourcing services 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 outsourcing services companies.
- Partial evidence
- Its own public description names part of outsourcing services companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outsourcing services 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 23 of 57 outsourcing services companies based in Switzerland
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Outsourcing services companies based in Switzerland at a glance
As of Sep 14, 2026Companies by employee count
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 57 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 outsourcing services 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 Switzerland whose own description of what they do matches “outsourcing services 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 outsourcing services 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 outsourcing services companies, 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, 1,300 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 outsourcing services 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 outsourcing services companies are there based in Switzerland?
RevenueBase identified 57 outsourcing services companies 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?
SPS, headquartered in Zurich, tops this list with the largest team on record.
Which city has the most outsourcing services companies?
Zurich leads with 9 headquartered companies, followed by Lausanne (4) and Geneve (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 1,300 verified decision-maker contacts tracked across these 57 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.
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