- Architect / tech lead of Cloudflare Workers.
- Lead developer and co-founder of Sandstorm.io.
- Author and maintainer of Cap'n Proto serialization and RPC protocol, commonly called the successor to Protocol Buffers.
- Primary author and former maintainer of Google Protocol Buffers v2, Google's data interchange format.
- Owner of a LAN-party optimized house.
- Creator of Jeff Dean Facts (hacker humor).