Jack Lloyd is a Senior Software Engineer at DFINITY, focusing on cryptography, with project experience including the development of a threshold ECDSA signature scheme and optimization of a distributed key generation system. Prior roles include Software Engineer at Signal Messenger, where Jack implemented the Signal protocol in Rust, and Senior Software Engineer at Fortanix, working on a FIPS L3 validated HSM product. Jack also has extensive experience as a Senior Developer at Broadway Technology, improving security and performance for a trading platform, and as a Software Engineer at Volant Trading, contributing to high-frequency trading systems. Additional experience includes consulting at Stratum Security and security engineering roles at Atlan Labs and Cybertrust. Jack holds a BS in Computer Science from The Johns Hopkins University.