Company lists · Data refreshed September 2026
Top 25 Clinical trial staffing agencies based in Switzerland
RevenueBase identified 68 clinical trial staffing agencies headquartered in Switzerland as of September 2026 and tracks 3,241 professional contacts across them, including 1,804 with verified work emails. Zug is the largest hub.
This list covers clinical trial staffing agencies 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 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.
The 25 largest clinical trial staffing agencies based in Switzerland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,494 contacts → | ||||
Indirect evidence “PSI is a leading full-service global Contract Research Organization whose key strength is predictable patient enrollment across multiple therapeutic areas.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 196 contacts → | ||||
Partial evidence “Accelsiors is an end-to-end clinical research organization that has empowered biopharmaceutical companies for over two decades.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 60 contacts → | ||||
Indirect evidence “Als vertrauensvoller und zuverlässiger Partner rekrutieren wir Fachkräfte im medizinischen und paramedizinischen Bereich.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 39 contacts → | ||||
Strong evidence “Running clinical trials feels insurmountable for the average hospital, clinic, or practice.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 31 contacts → | ||||
Indirect evidence “UniQue Ressources Humaines est une entreprise de placement, de recrutement, et de conseil, spécialisée dans le domaine de la santé, basée à Lausanne, Suisse.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 25 contacts → | ||||
Indirect evidence “Care21 ist eine unabhängige und hochspezialisierte Personalagentur mit Fokus auf die Feststellenvermittlung in der Gesundheitsbranche.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 contacts → | ||||
Partial evidence “HEMEX is a European Contract Research Organization (CRO) supporting pharmaceutical, biotech, and medtech SMEs with end-to-end clinical development solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 17 contacts → | ||||
Indirect evidence “RECRUITMENT DRIVEN BY SCIENCE At headcount, we specialise exclusively in life sciences recruitment-supporting pharma, biotech, medtech, and digital health companies across…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 15 contacts → | ||||
Strong evidence “Rede Optimus is a global clinical research organization (CRO) specialized in medical device trials, dedicated to answering key clinical questions and advancing evidence-based…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Indirect evidence “PHARMYCARE 🧑 Pharmy AG ist seit 2020 ein innovativer und flexibler Personaldienstleister, der sich auf den Personalverleih und die Vermittlung von Fachkräften für das Schweizer…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 10 contacts → | ||||
Strong evidence “Medical Trials Analysis (MTA) Group is a comprehensive CRO providing a full range of services for clinical trials, clinical research and medical education linked to clinical…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect evidence “Bei Proma Jobs stehen Innovation und Karriere im Mittelpunkt.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 contacts → | ||||
Indirect evidence “Since 20 years gloor & lang is headhunting for Life Science Managers and Specialists.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 6 contacts → | ||||
Indirect evidence “Swiss Medical Personal AG „Wo Kompetenz auf Vertrauen trifft.“ Swiss Medical Personal AG steht für hochwertige Personalvermittlung im Gesundheitswesen – mit Fokus auf…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence “Wir verleihen und vermitteln Personal im Gesundheitswesen und helfen auf diese Art Betrieben ihre temporären Vakanzen zu besetzen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Partial evidence “CK QLS are the Swiss division of CK Group, specialists in Life Science, Chemical, Technical and Clinical Research recruitment.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “ARETÈ Solutions is based on the consolidated experience and the professionalism in the clinical research field of its team, offering tailored, innovative and effective solutions…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “Founded in 2003 datametrix is a Swiss clinical research organization with a strong heritage in statistical consultancy, programming and analysis, clinical data management, medical…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “Suchen Sie als Pflegefachkraft eine neue Herausforderung?” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence “GPC LifeSciences is a specialist recruitment agency connecting top talent with leading organisations across Life Sciences (pharma, biotech, medtech.) and Healthcare.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Partial evidence “International Clinical Research company SCHMID CONSULT offer and have already performed: Training according to ICH-GCP Guidelines Clinical Study Design Protocol and CRF Design…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Partial evidence “RodanoTech is a Swiss based CRO specialised in clinical Data Management services and EDC (electronic data capture) solutions- We provide solid Data Management and EDC services- We…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Clinical research deserves more than coordination.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Wir verbinden Menschen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Execruit is not a mainstream recruitment agency.” Source: RevenueBase Database · checked Sep 27, 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: clinical trial staffing agencies. 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 clinical trial staffing agencies.
- Partial evidence
- Its own public description names part of clinical trial staffing agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name clinical trial staffing agencies. 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 68 clinical trial staffing agencies based in Switzerland
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Clinical trial staffing agencies based in Switzerland at a glance
As of Sep 27, 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 68 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 clinical trial staffing agencies, 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 “clinical trial staffing agencies”. 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 clinical trial staffing agencies), 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 clinical trial staffing agencies, 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, 1,804 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.
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 clinical trial staffing agencies, 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 clinical trial staffing agencies are there based in Switzerland?
RevenueBase identified 68 clinical trial staffing agencies 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?
PSI CRO, headquartered in Zug, tops this list with the largest team on record.
Which city has the most clinical trial staffing agencies?
Zug leads with 8 headquartered companies, followed by Zurich (8) and Basel (7).
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 1,804 verified decision-maker contacts tracked across these 68 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.
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