Jon Gjengset has worked in the Rust ecosystem since the early days of Rust 1.0, and built a high-performance relational database from scratch in Rust over the course of his PhD at MIT. He's been a frequent contributor to the Rust toolchain and ecosystem, including the asynchronous runtime tokio, and maintains several popular Rust crates, such as hdrhistogram and inferno. Jon has been teaching Rust since 2018, when he started live-streaming intermediate-level Rust programming. Since then, he's made videos that cover advanced topics like async and await, pinning, variance, atomics, dynamic dispatch, and more, which have been received enthusiastically by the Rust community.

David Tolnay, who reviewed the book's technical content, is a prolific, well-known, and respected contributor in the Rust ecosystem who maintains some of the most widely used Rust libraries, including syn, serde, and anyhow. He is also a member of the Rust library team.