Refeyn

Refeyn Ltd. is a biotechnology company focused on mass photometry technology for industry and academic research. Founded in 2018 as a spin-out from the University of Oxford, Refeyn aims to make mass photometry accessible to enhance biomolecular research and biotherapeutic development. The company has installed over 500 mass photometry systems globally, serving a diverse clientele that includes academic labs, biopharma companies, and contract research organizations. Refeyn's core technology allows for direct measurement of molecular mass at the single-molecule level without labels or complex sample preparation. Their product lineup includes the TwoMP Auto, an automated mass photometer; the OneMP, their first commercial device; the SamuxMP Auto, designed for GMP-compliant biotherapeutic manufacturing; and the MassFluidix HC system for advanced studies. Refeyn also provides lifecycle support and maintenance services for its instruments, ensuring customers receive comprehensive assistance. The company is dedicated to fostering innovation and collaboration in the scientific community.

Research Oxford, United Kingdom Founded 2018 ~35 employees

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Employees
35
+2.9% in the 3 months to Jun 2025
12-month attrition
29.4%
Tech: 58.3%
H1B filings, FY2026
1
Sponsors visas
Open jobs
2
Last 30 days

Headcount trend

Refeyn went from 30 employees in Jul 2023 to 35 in Jun 2025. Jan to Jun 2025: 2 people joined, 2 left.

Headcount data through Jun 2025

Org structure

Headcount by department

Other19
Sales5
Marketing4
Success3
Engineering2
Operations1
HR1

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H-1B sponsorship

H-1B Sponsorship Limited
H-1B Filings by Department
Engineering1

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Refeyn FAQ

How many employees does Refeyn have?

Refeyn has about 35 employees, up 2.9% over the 3 months to Jun 2025.

Does Refeyn sponsor H1B visas?

Yes. Refeyn filed 1 H1B (LCA) application in FY2026, according to the latest U.S. Department of Labor disclosures. It was for a Engineering role.

Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.