Doug Hoyte
I'm the inventor of vmtouch, a cross-platform command-line utility for controlling and diagnosing virtual memory that has been used by companies like Spotify and Instagram to optimize their infrastructure. I also maintain C++ bindings for the Lightning Memory-Mapped Database, as well as several other open source projects and am the author of Let Over Lambda, a book on Lisp programming.
I admire simple solutions, efficient code, and good explanations of technical concepts.