Overview
Connections
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials

Funding and backers

Latest round
Venture round
Jul 2026 · 3 mo ago
Team
51-200
employees, estimated range
Hiring now
4
+1 posted in 30 days
Grants
$225k
2 grants · CORDIS
Backers
3
Horizons Ventures, Oxford Science Enterprises
The money's age
Fresh money
3 months since the last round · and hiring
Momentum
55/100
hiring for its size, a new city, in the news, fresh money
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Jul 28 Raised a round Venture round Mar 18 Launched Refeyn launches MyMass instrument to simplify sample quality assessment for structural biology · globenewswire Jan 26 Recognition Refeyn named in the Sunday Times 100 Tech list of the UK's fastest-growing technology companies · refeyn.com Sep 16, 2025 Raised a round Venture round Jan 28, 2025 Raised a round Venture round Nov 28, 2024 Launched Refeyn Launches Software Platform To Automate Mass Photometry Analysis Workflows · technologynetworks.com Dec 7, 2023 Raised a round Venture round Jun 1, 2023 Won a grant CORDIS Mar 10, 2023 Raised a round Venture round Sep 26, 2022 Raised a round Venture round Apr 11, 2022 Raised a round Venture round Dec 23, 2021 Raised a round Venture round Sep 17, 2021 Raised a round Venture round Dec 15, 2020 Raised a round Venture round Oct 1, 2020 Won a grant $225k · CORDIS Aug 30, 2019 Raised a round Venture round Feb 25, 2019 Raised a round Venture round Apr 27, 2018 Founded per the company register
Tractionpublic signals, read monthly
Web presence
top 0.05%
of 133.2M domains by links, Common Crawl
Funding rounds
RoundDateAmountInvestorsSource
Venture round Jul 2026 — — find-and-update.company-information.service.gov.uk
Venture round Sep 2025 — — find-and-update.company-information.service.gov.uk
Venture round Jan 2025 — — find-and-update.company-information.service.gov.uk
Venture round Dec 2023 — — find-and-update.company-information.service.gov.uk
Grant Jun 2023 — — CORDIS
Venture round Mar 2023 — — find-and-update.company-information.service.gov.uk
Venture round Sep 2022 — — find-and-update.company-information.service.gov.uk
Venture round Apr 2022 — — find-and-update.company-information.service.gov.uk
Venture round Dec 2021 — — find-and-update.company-information.service.gov.uk
Venture round Sep 2021 — — find-and-update.company-information.service.gov.uk
Venture round Dec 2020 — — find-and-update.company-information.service.gov.uk
Grant Oct 2020 $225k — CORDIS
Venture round Aug 2019 — — find-and-update.company-information.service.gov.uk
Venture round Feb 2019 — — find-and-update.company-information.service.gov.uk
Registers and programsofficial lists and records that name the company
Legal entity REFEYN LTD Companies House
Registered 27 Apr 2018
Backed byfrom the funds' portfolios and accelerator catalogs
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Visa sponsorship

#5,201 of 8,228 sponsors
1
H-1B filings in 12 months
$93k
Median offered salary
2
Open roles in United States
Who they sponsor
Other engineers
1
The salary offered for each occupationVisa pass · 90 credits
In the register as Refeyn Inc., Waltham, MA
Other sponsors in the same field
See 2 open roles Alert me
US Department of Labor · latest filing May 8, 2026 · Visa details by country

Overview

Discover how Refeyn's mass photometry technologies can rapidly characterize single particles - like proteins and viral vectors - in solution and without labels.

Connections

List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Owner1
oxfordscienceenterprises.com
UK PSC: controlling company
seen Nov 1, 2026 · evidence: 1 Show evidence
Shared investors3
81 portfolio companies: First Light Fusion, Archangel Lightworks, Alloyed and 78 more
91 portfolio companies: Google DeepMind, Waze, Microsoft 2026 and 88 more

News

Blog 3 months ago
Refeyn continues participation in NIIMBL consortium tackling AAV purification
Refeyn will continue its role in a project that has received additional funding through the National Institute for Innovation in Manufacturing Biopharmaceuticals (NIIMBL), focused on intelligent optimization of adeno-associated virus (AAV) purification pr
Read more
Report
Blog 5 months ago
Refeyn welcomes Paul C. Collins to Scientific Advisory Board
Paul C. Collins Director of Research at Purdue University Refeyn is pleased to announce that Paul C. Collins has joined its Scientific Advisory Board (SAB). Paul brings a wealth of experience spanning synthetic small molecules, monoclonal antibodies, ther
Read more
Report
Blog 5 months ago
Bio-Techne and Refeyn close critical gap in bispecific antibody and biosimilar characterization
New integrated workflow combines icIEF fractionation and mass photometry Enables simultaneous assessment of charge and size variants at single molecule resolution Four-hour workflow reduces development risk and accelerates biosimilar manufacturing MINNEAP
Read more
Report
News YahooFinance 8 months ago
Refeyn launches MyMass instrument to simplify sample quality assessment for structural biology
Compact, all-in-one mass photometer helps researchers verify sample quality before proceeding to cryo-EM, native MS, BLI, SPR, and other costly experimentsOXFORD, United Kingdom, March 18, 2026 (GLOBE NEWSWIRE) -- Refeyn, developer of pioneering mass phot
Read more
Report
Blog 8 months ago
Refeyn launches MyMassMP instrument to simplify sample quality assessment for structural biology
The MyMass mass photometer enables researchers to quickly verify sample quality before proceeding to cryo-EM, native MS, BLI, SPR and other demanding experimental workflows. Compact, all-in-one mass photometer helps researchers verify sample quality befor
Read more
Report
Press release globenewswire 8 months ago
Refeyn launches MyMass instrument to simplify sample quality assessment for structural biology
Refeyn launches MyMass - an all-in-one mass photometer for fast, accurate sample quality assessment ahead of costly structural biology workflows....
Read more
Report
Blog 8 months ago
Leading CROs and CDMOs turn to mass photometry for rapid protein, mRNA and viral vector analytics
As CROs and CDMOs expand their role in biopharma development and manufacturing, fast, accurate bioanalytic technologies remain critical to biotherapeutic affordability Refeyn's Samux benchtop mass photometer enables rapid analysis of adeno-associated viru
Read more
Report
Blog 9 months ago
Comparing analytical approaches for AAV characterization (2026)
This post was first published in March 2023 Updated on 20 February 2026 Adeno-associated virus (AAV) sample characterization is critical for research, development, and manufacturing processes of gene therapies that involve these viral vectors (Fig. 1). At
Read more
Report
Show more news

Tech stack

Technologies named in job postings at Refeyn over the last 12 months, by layer, with the share of postings for each.
Technologies in use
7
Postings analysed
6
Stack modernity
58/100
Languages
C++
MATLAB
Python
Developer tools
Mandiant capa
Practices & domains
GMP
Design Controls
Verification & Validation
Sign in to see how your skills match this stack Sign In

Salary insights

Compensation ranges based on this company's open jobs
Median
$67k
Typical range
$58k – $160k
Open positions
3
1 Jobs
Junior 100%
Level Jobs Median Typical range
Junior 1 $58k $58k
Highest paying role Key Account Manager $160k
Normalized to USD per year

Growth

Hiring Momentum
76/100
Scaling fast
Open positions
4
1 opened / 5 closed in 30 days
Median time-to-fill
53 days
faster than 25% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics +100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Support
20% ▼
Operations
20% ▼
Field & Service
20% ▲
Industrial Engineering
20% ▼
Management
10% ▼
Public Policy
10% ▼
Activity Timeline
Added GMP to stack Oct 2026
Added Verification & Validation to stack Oct 2026
Added Design Controls to stack Oct 2026
New location: Boston Oct 2026
New location: China Oct 2026
New location: Germany Oct 2026
New location: United States Oct 2026
Added Python to stack Sep 2026
Added MATLAB to stack Sep 2026
Added C++ to stack Sep 2026
New location: Singapore Sep 2026
Added Mandiant capa to stack Sep 2026

Offices

Where the company hires and what each office is for
Cities
6
Hiring now
3
Countries
5
Busiest office
Oxford
Loading the map
Headquarters Builds here Office with open vacancies No open vacancies right now Tap a pin for the office
Oxford United Kingdom
HQ
Oxford
2 open roles 7 posted in 90 days 50-200 est. staff $67k Avg Salary
hires for Field & Service, Industrial Engineering
seen since Jul 2026 careers board, job postings
Boston United States
Regional office
Boston
1 open roles 1 posted in 90 days 10-50 est. staff $58k Avg Salary
hires for Operations
seen since Aug 2026 careers board, job postings
Waltham United States
Regional office
Waltham, MA
1 open roles 1 posted in 90 days 10-50 est. staff $58k Avg Salary
hires for Operations
seen since Aug 2026 careers board
Paris France
Regional office
France
careers board
Singapore Singapore
Regional office
APAC
seen since Apr 2026 careers board
Stockholm Sweden
Regional office
Sweden
careers board

Jobs

$54k – $67k per year · Hybrid · Bachelor's Degree · Oxford
Python
C++
MATLAB
Apply

Financials

Total raised
$225k
Latest round
Venture - Series Unknown
Funding rounds
14
Investors
1
Funding rounds
Round Announced Amount
Venture - Series Unknown 2026 — Details
Venture - Series Unknown 2025 — Details
Venture - Series Unknown 2025 — Details
Venture - Series Unknown 2023 — Details
Grant 2023 — Details
Venture - Series Unknown 2023 — Details
Venture - Series Unknown 2022 — Details
Venture - Series Unknown 2022 — Details
Venture - Series Unknown 2021 — Details
Venture - Series Unknown 2021 — Details
Venture - Series Unknown 2020 — Details
Grant 2020 $225k Details
Venture - Series Unknown 2019 — Details
Venture - Series Unknown 2019 — Details
Key Investors
Oxford Science Enterprises
significant control (Companies House PSC)
oxfordscienceenterprises.com