The Pragmatic Engineer Mitchell Hashimoto’s new way of writing code
1060 snips
Feb 25, 2026 
Mitchell Hashimoto, co-founder of HashiCorp and creator of Terraform and Ghostty, is an influential infrastructure engineer reshaping developer tools. He discusses multi-cloud design, turning open-source into a sustainable business, building Ghostty and terminals, and how AI agents and code contributions change workflows and hiring. The conversation focuses on tooling, scaling engineering practices, and AI’s effects on open source.
AI Snips
Chapters
Books
Transcript
Episode notes
A Failed Research Project Became HashiCorp's Roadmap
- Mitchell's undergrad research failure produced a notebook of missing pieces that later mapped to HashiCorp products like service discovery and declarative infra.
- That 'notebook of unsolved problems' became a north star and an exit-interview shared with his future co-founder Armond.
Traveling Promoted Terraform By Chunked Offline Work
- Mitchell traveled obsessively to conferences to promote Terraform and often worked on planes by pre-categorizing small 10–15 minute GitHub tasks to fix offline.
- That travel routine produced bursts of hundreds of issue fixes landed immediately after flights.
AI Agents Flood Open Source With Noisy PRs
- AI contributions massively increase noisy, low-signal PRs that overwhelm maintainers because agents can generate plausible but incorrect code quickly.
- Mitchell saw a step-change when agents began opening PRs autonomously, often with empty bodies or near-instant edits.
