Finbarr Taylor is a Scottish-born software engineer turned startup founder and investor, best known for co-founding Shogun, an e-commerce page builder platform that raised $115M and reached a $507.5M valuation. After nearly 11 years building Shogun - including roughly 8 as CEO - he transitioned to a board role in early 2026 and rejoined Y Combinator as a Visiting Partner. A prolific angel investor with 60+ portfolio companies including Deel and Fathom Video, Taylor is now a vocal advocate for lean, AI-enabled teams and the rise of what he calls 'nanocorns' - small but highly efficient companies capable of billion-dollar outcomes.
Charlie Warren is a startup founder-turned-investor who built Convex, a commercial services software platform, from a garage bootstrapping sprint through $60M in venture funding and a YC Top Companies nod, before selling to ServiceTitan in 2024. Today he serves as a Visiting Partner at Y Combinator, bringing hard-won founder experience to the next wave of vertical SaaS builders. His unusual arc - Goldman Sachs to energy policy to enterprise software - gives him a perspective on markets that most investors simply don't have.
Grey Baker is a Cambridge-educated mathematician turned software entrepreneur best known for bootstrapping Dependabot to $14k MRR before selling it to GitHub in 2019, then growing GitHub Advanced Security to $140M ARR. A former McKinsey consultant who taught himself to code in six months, cycled 30,000km around the world between startups, and co-founded YC S23 company Pincites (AI contract negotiation, acquired by Filevine in 2025), he now serves as a Visiting Partner at Y Combinator.
Raphael Schaad is a Swiss designer-engineer and Visiting Partner at Y Combinator who built three generation-defining products: iA Writer (the minimalist writing app), Flipboard (the original social magazine), and Cron (acquired by Notion in 2022). Raised in the Swiss Alps, trained at MIT Media Lab, he brings a rare combination of technical depth and design taste that has made him a go-to mentor for founders navigating the AI era.