Barnaby Malet
FounderFounder at machine0 Β· Founder at Upflow
Paris, Γle-de-France, France
Foundedmachine0 Β· YCUpflow Β· YC
About
Barnaby Malet studied computer science at Imperial College London and is a two-time YC founder. He previously served as cofounder, CTO, and CPO at Upflow (W20) before founding machine0 (S26).
Founder at machine0YC S26
Intro paths
Barnaby went through Y Combinator (Summer 2026) β any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, Backing expeditions into the future β the partner who ran machine0's batch and knows the company first-hand. YC profile β
In turn, Barnaby can intro founders to machine0's investors below.
machine0's investors Β· 1
Founder at UpflowYC W20
Intro paths
Barnaby went through Y Combinator (Winter 2020) β any YC alum in your network can reach them through the YC community.
Their group partner at YC was Brad Flora, Backing expeditions into the future β the partner who ran Upflow's batch and knows the company first-hand. YC profile β
In turn, Barnaby can intro founders to Upflow's investors below.
Upflow's investors Β· 3
Co-founders at Upflow
Experience
- machine0 (YC S26)Founder & CEOcurrent2026 β presentSan Francisco Bay Area
- UpflowCo-founder & Board Membercurrent2025 β present
- UpflowCo-founder & CTPO2018 β 2025Paris Area, France
- Hike MessengerSenior Product Manager2015 β 2017New Delhi Area, India
- MechioCo-founder2011 β 2015London, England, United Kingdom
- AppSparkSoftware Engineer2010 β 2011London, England, United Kingdom
- AppleSoftware Engineer2009London, England, United Kingdom
- Morgan StanleyAnalyst2008London, England, United Kingdom
- Imperial College LondonTeaching Assistant2007 β 2008London, England, United Kingdom
Skills & more
+4 more
Software EngineeringTeam LeadershipAgile MethodologiesUser Interface DesignLanguages English Β· French Β· German Β· Spanish
From Barnaby's professional profile.
Frequently asked questions
- Who is Barnaby Malet?
- Barnaby Malet studied computer science at Imperial College London and is a two-time YC founder. He previously served as cofounder, CTO, and CPO at Upflow (W20) before founding machine0 (S26).
- Where does Barnaby Malet work?
- Barnaby Malet is Founder of machine0 and Founder at Upflow.
- What companies did Barnaby Malet found?
- Barnaby Malet founded machine0, Upflow.
- Where did Barnaby Malet go to school?
- Barnaby Malet studied at Y Combinator (YC S26); Y Combinator (YC W20); Imperial College London (PhD, Cloud Computing).
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
+ 4,709 more
Imperial College London mafia196
Also came through, then founded or led a company.
+ 189 more
Upflow mafia2
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
+ 1,994 more
