-25y: Maintained ELinks. Contributed to many OSS games like FreeCiv, OpenTTD.
-20y: Early Git developer with Linus, Junio et al. (Cogito, repo.or.cz.)
-15y: My Computer Go program Pachi was very strong - the main MCTS baseline in DeepMind's AlphaGo Nature papers.
-10y: Maintained glibc @ SUSE & stable branches. Some crazy stuff like minduploading of c.elegans, cofounded brmlab the Prague hackerspace.
Last decade: Founder & CTO Rossum.ai - leading platform in Intelligent Document Processing.
Claude.vim on the evenings.