TypeSafe AI, founded by claimed RLHF co-inventor Diogo Almeida, opens hiring

hardimanjames · x · 2026-09-18

Startup TypeSafe AI is hiring founding team members under the tagline "Build Prod, Not God."

CEO Diogo Almeida says he co-invented RLHF and InstructGPT, the methods behind ChatGPT and GPT-4, after stints at Google Brain. COO Sasha Sheng is a former Meta/FAIR research engineer who won 7 hackathons in 2023; CTO Erik Gafni is a repeat founder and early employee at two unicorns. Product details remain undisclosed; a waitlist and open roles are live.

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