Biography
Sarah Williams is the DeFi Research Lead at BlackPearlBitcoin, covering decentralized finance protocols, on-chain yield strategies, smart-contract security, and the institutional adoption of permissionless finance. She has 9 years in cryptocurrency markets with a specific focus on Ethereum's DeFi ecosystem since the 2020 'DeFi summer'.
Sarah holds a Master of Science in Computer Science (specialization in cryptography) from MIT (2015) and a Bachelor of Engineering in Software Engineering from Imperial College London (2013). She earned the Certified DeFi Expert (CDE) credential from Blockchain Council in 2022 and completed the Cyfrin Updraft Solidity security curriculum in 2023.
Before joining BlackPearlBitcoin in 2024, Sarah was Head of DeFi Research at Messari (2022–2024), where she led coverage of Aave, MakerDAO, Lido, Uniswap, and EigenLayer. Earlier she spent three years as a smart contract security auditor at Trail of Bits (2019–2022), where she audited high-profile DeFi protocols including Compound, dYdX, and Yearn Finance.
Her published research includes peer-reviewed papers on yield aggregator MEV exposure (IEEE Security & Privacy, 2023), liquidity-staking-token unbonding-period risk (Coin Center Working Papers, 2022), and a widely cited primer on real-world-asset tokenization mechanics (Messari, 2023). She speaks regularly at DevConnect, EthCC, and Permissionless Conference.
Sarah's editorial focus areas are DeFi lending markets, restaking economics, AMM design, stablecoin reserve composition, and protocol-level risk frameworks. She maintains an active conflicts policy: positions in any protocol covered are disclosed at the article level, and she abstains from coverage during private-sale rounds in protocols she advises.