Barnaby Malet is the Founder and CEO of machine0 (YC S26), a developer infrastructure company building persistent and powerful cloud VMs purpose-built for AI agents and agentic workloads.

Barnaby studied Computer Science at Imperial College London, then built payments products at Hike, India's messaging giant, before co-founding Upflow, a YC-backed B2B fintech.

A two-time YC founder and engineer at heart, Barnaby identified a critical gap in the market: as AI agent workloads shifted from ephemeral to always-on, developers needed robust, persistent compute environments built specifically for agents.

At Upflow (YC W20), Barnaby served as Co-founder, CTO and CPO, helping grow the company to 70+ employees, $22.9M in total funding, and over 12,000 users with clients including Lattice, Front, and Productboard.

machine0 delivers a 99.99% VM uptime SLA across four regions, with pre-installed agent tooling (Claude Code, Codex, OpenClaw, Hermes) and is backed by Y Combinator's S26 batch as the go-to compute environment for always-on AI agents.