Buzz Cai is currently a Staff Research Product Manager at ByteDance, having joined in 2025. Prior to this, they served as a Technical Lead and Senior Software Engineer at Meta from 2024 to 2025, where they led a team of engineers. They co-founded and operated as COO for a Stealth AI Company from 2023 to 2024 and held the role of Founder and CEO at Rumble from 2021 to 2022, where they developed a permissionless identity system for Web3. They contributed to the Ethereum Foundation as an ERC Author and EIP Editor from 2022 to 2025 and completed a software engineering summer internship at Bloomberg LP in 2019.
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