Phagos
Phagos develops phage-based veterinary medicines using AI and microbiology, aiming to combat antibiotic-resistant bacterial infections. The company has raised $32M in Series A funding and employs 74 people.
The growth story
Phagos grew from 14 to 74 employees between 2022 and 2026, raising $32M along the way, most recently a Series A in October 2025.
About
Phagos creates customized phage-based treatments for bacterial infections in animals, leveraging AI to scale production. Their technology aims to address the growing crisis of antibiotic resistance, which is projected to become the leading cause of death by 2050.
The company, founded in 2021, has secured $32M in Series A funding from investors including AGORANOV and Bpifrance. With 74 employees, Phagos is focused on expanding its veterinary solutions while preparing to adapt its technology for human health applications.
Founders and leadership
Phagos is led by a team with expertise in microbiology and AI, with its largest function being Research, which comprises 13 employees. The company operates from its headquarters in Suresnes, France.
The Phagos org chart
Alexandros Pantalis (Co-founder & CEO) leads 15 mapped leaders with 3 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Research 17 (+21% YoY), Engineering 16 (+78% YoY), Business Development 8 (+14% YoY), Operations 3 (+50% YoY).
Talent flow
Phagos recruits heavily from Sanofi, BIOMILLENIA, and academic institutions like Ecole normale supérieure and CNRS. Alumni have moved on to roles at Genics, KPMG France, and The World Bank.
Most common previous employers of Phagos staff: Sanofi (5), BIOMILLENIA (3), Ecole normale supérieure (3), CNRS (3), Entrepreneurs First (2), Lesaffre (2). Former Phagos employees most often moved to Genics (1), KPMG France (1), The World Bank (1), Eurobio Scientific FR (1), SeqOne (1), L'Oréal (1).
Hiring now
Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Phagos: English (33), Molecular Biology (25), Project Management (22), Communication (22), Microsoft Office (22), Microbiology (22), Python (Programming Language) (21), Teamwork (21).
Where the team actually sits
Phagos people are concentrated in Île-de-France, France (26), France (6), Greater Paris Metropolitan Region (3), Auvergne-Rhône-Alpes, France (2).
Search footprint
Phagos attracts about 90 organic search visits a month, traffic worth roughly $0K a month if bought through ads. It gained 8 ranking keywords and lost 11 in the last period.
What employees say
- Compensation
- 3.00 / 5
- Career opportunities
- 4.00 / 5
- Senior management
- 1.00 / 5
- Work-life balance
- 4.00 / 5
Frequently asked
Phagos has 74 employees as of September 2026.
Phagos has raised $32M in total, most recently a Series A round in October 2025.
Phagos was founded in 2021 by Adèle James, Alexandros Pantalis.
Alexandros Pantalis (Co-founder & CEO) sits at the top of Phagos's reporting structure, with 3 direct reports.
The most common previous employers of current Phagos staff are Sanofi (5 people), BIOMILLENIA (3 people), Ecole normale supérieure (3 people).
Former Phagos employees most often move to Genics (1), KPMG France (1), The World Bank (1).
Phagos attracts about 90 organic search visits a month, worth roughly $0K a month in equivalent ad spend.
The most common skills among Phagos staff are English, Molecular Biology, Project Management, Communication, Microsoft Office.
Phagos staff are concentrated in Île-de-France, France (26), France (6), Greater Paris Metropolitan Region (3).
Phagos has about 17 people in Research, up 21% over the past year, as of September 2026.
Phagos has about 16 people in Engineering, up 78% over the past year, as of September 2026.
Computed from 43 current and 14 former Phagos profiles, as of September 2026. Source: Crustdata.
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