Денис Судаков ML engineer. MSU geology + Stanford/Harvard CS. PyTorch, JAX, Rust, RL post-training. sudakov.site @DenisSud2 sudakov.denis.2007@gmail.com repos GSPO-PyTorch — sequence-level RL for LLMs aiijc-701w — GRPO for math, multilingual nixos-config — NixOS flake (pc + g14) su-code — WIP: coding multiplexer