João Vieira brings roughly two decades of hands-on biotech R&D experience in antibody engineering, protein therapeutics, and cell therapy before becoming a venture partner at Medicxi, where he specifically focuses on antibody and protein therapeutic opportunities rather than being a generalist investor. His background leading discovery operations at argenx combined with his role providing hands-on support for early-stage company creation positions him as a scientific co-architect who works from concept through asset optimization into clinical-stage assets.
About their Fund
Sectors
Biotech, Health, Medtech
Rounds
Avg Check Size
Notable Investments
Medicxi pioneered the asset-centric venture model over a decade ago, concentrating capital and decision-making on a single lead asset in each company rather than funding broad platforms, and operates as an integrated early-stage plus growth platform that can back European biotech companies from inception through late-stage clinical development and commercialization. The firm was formed by spinning out Index Ventures' entire life-sciences franchise and maintains formal backing from multiple global pharmas including GlaxoSmithKline, Johnson & Johnson Innovation, and Novartis as fund investors.
Other partners at the fund
Notable Fund
Investments
No items found.
Sheets they're in
No items found.
Sheets they're Fund is in
No items found.
Is this information out of date? Let us know
Popular Investors
investor name
Active in
Rounds
Avg. Check
Links
Deeptech / Hardware
Robotics
Biotech
+
12
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Defense
Deeptech / Hardware
Energy
+
7
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$100K - $5M
Unknown
Biotech
Health
Deeptech / Hardware
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$250K - $2M
Unknown
Climate
Deeptech / Hardware
Materials
+
4
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $1.5M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
7
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
$400K - $2M
Unknown
Deeptech / Hardware
Robotics
Biotech
+
2
View more in profile...
Unknown
Pre-Seed - Seed
Unknown
~$750K
Unknown
Fintech
Deeptech / Hardware
Devtools
+
2
View more in profile...
Unknown
Pre-Seed - Series A
Unknown
$250K-$1M
Unknown
Or automatically find your investor matches
Upload your pitch deck to get your best investor matches in minutes.
Reveal the very best VCs to pitch for your startup
Get matching investors' email addresses
No ads. No catch. Free from VC Sheet.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Success. Check your email in 5 minutes.
















.jpeg)







.jpeg)











































































.png)
























































































































.jpeg)









.jpeg)
















































































.jpeg)



