Osler Diagnostics
Osler Diagnostics develops portable lab-quality diagnostic devices for global healthcare settings. The UK-based company has raised $177M, most recently in a Series C round in November 2022, and employs 123 people.
The growth story
Osler Diagnostics grew from 87 to 123 employees between 2021 and 2026, raising $177M along the way, most recently a Series C in November 2022.
About
Osler Diagnostics makes portable diagnostic devices that perform lab-quality tests across healthcare settings. Their flagship product, the Osler Origin, aims to make diagnostics accessible anywhere, building on decades of Oxford University research that previously led to the portable blood glucose sensor.
The company has raised $177M, including a Series C round in late 2022 backed by major investors like Lansdowne Partners and Oxford Science Enterprises. With 123 employees, Osler continues its Oxford roots while scaling its portable diagnostics technology globally.
Founders and leadership
Engineering is Osler's largest function, accounting for 31 of its 123 employees. The company maintains strong ties to its Oxford origins, with leadership and technical talent drawn from the university's research programs.
The Osler Diagnostics org chart
Paulo Roberto Bueno (Co-Founder) leads 37 mapped leaders with 2 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 33 (-20% YoY), Research 33 (-15% YoY), Operations 19 (-21% YoY), Quality Assurance 10 (-23% YoY), Information Technology 8 (0% YoY), Business Development 5 (0% YoY).
Talent flow
Osler recruits heavily from Oxford University and medical device companies like Abbott and Siemens Healthineers. Alumni frequently move to other Oxford-area biotech firms, with Oxford Nanopore Technologies being the top destination.
Most common previous employers of Osler Diagnostics staff: University of Oxford (6), Abbott (5), Siemens Healthineers (4), PA Consulting (3), Abingdon Health (3), University of Nottingham (3). Former Osler Diagnostics employees most often moved to Oxford Nanopore Technologies (3), UK Atomic Energy Authority (2), Cellular Origins (2), Gousto (2), OrganOx (2), Refeyn (2).
Alumni worth knowing
The Osler Diagnostics mafia
Osler alumni have founded 5 companies, most notably Pally, which has grown to 13 employees after being part of Y Combinator's S25 batch. Other spinouts focus on medical technology and scientific innovation.
5Haz Hubble, was Finance Manager until 2021Ben Howells FCIPD ACC, was Head of People until 2022Barry Lillis, was Head Of Design until 2021Vincent Linden, was Senior Integration Scientist until 2024Ben Williams, was Scientist until 2019Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Osler Diagnostics: Microsoft Office (34), Research Skills (32), Project Management (32), Product Development (32), Teamwork (28), Communication (27), Problem Solving (26), Data Analysis (25).
Where the team actually sits
Osler Diagnostics people are concentrated in England, United Kingdom (54), Greater Oxford Area (20), United Kingdom (11), Greater Cambridge Area (2).
Search footprint
Osler Diagnostics attracts about 53 organic search visits a month, traffic worth roughly $0K a month if bought through ads. It gained 6 ranking keywords and lost 4 in the last period.
What employees say
- Compensation
- 4.00 / 5
- Career opportunities
- 3.70 / 5
- Senior management
- 3.70 / 5
- Work-life balance
- 3.60 / 5
Frequently asked
Osler Diagnostics has 123 employees as of September 2026.
Osler Diagnostics has raised $177M in total, most recently a Series C round in November 2022.
Osler Diagnostics was founded in 2017 by Paulo Roberto Bueno.
Paulo Roberto Bueno (Co-Founder) sits at the top of Osler Diagnostics's reporting structure, with 2 direct reports.
The most common previous employers of current Osler Diagnostics staff are University of Oxford (6 people), Abbott (5 people), Siemens Healthineers (4 people).
Former Osler Diagnostics employees most often move to Oxford Nanopore Technologies (3), UK Atomic Energy Authority (2), Cellular Origins (2).
At least 5 companies have a founder who previously worked at Osler Diagnostics, including Pally (YC S25), Oppo, Creative Leap.
Osler Diagnostics attracts about 53 organic search visits a month, worth roughly $0K a month in equivalent ad spend.
The most common skills among Osler Diagnostics staff are Microsoft Office, Research Skills, Project Management, Product Development, Teamwork.
Osler Diagnostics staff are concentrated in England, United Kingdom (54), Greater Oxford Area (20), United Kingdom (11).
Osler Diagnostics has about 33 people in Engineering, down 20% over the past year, as of September 2026.
Osler Diagnostics has about 33 people in Research, down 15% over the past year, as of September 2026.
Computed from 92 current and 152 former Osler Diagnostics profiles, as of September 2026. Source: Crustdata.
Build this for any company
Every number on this page came from the Crustdata API. Point the MCP at a company and get the same org chart, alumni list and talent flow in one prompt.