Software engineer at IBM · agentic AI for IBM Z and z/OS · Raleigh, NC
Currently: z Platform Evaluation Team (zPET) — installing IBM's z/OS AI products, running them hard, and fixing what breaks before customers see it.
Home lab: two-node inference cluster — ~9 quantized GGUF models across an AMD GPU and NPU, llama.cpp behind litellm, all Ansible.
Writing & talks: justinlargo.com · zPET blog — agentic engineering, spec-driven development, self-hosting models.
Patents: named inventor on multiple IBM patents.
| Repo | What it is |
|---|---|
| salient | deterministic structural evidence for code review — tree-sitter diffs, a per-repo ratchet, one static Go binary |
| mvs-install-playbooks | MVS 3.8 on a Raspberry Pi, via Ansible |
| dotfiles | my config, managed with chezmoi |
mainframes, agents, and more Ansible than strictly necessary