How to run Claude Code like the engineer who built it. (Boris Cherny, the head of Claude Code, just revealed his exact workflow) Follow these 6 steps. ↓ Most engineers use Claude Code like a chatbot. They prompt one session and wait. You can run 10 to 15 sessions in parallel and ship code simultaneously instead. 1/ Set Up Parallel Sessions -Terminal: Run 5 Claude Code sessions simultaneously in your terminal -Web: Run 5 to 10 additional sessions in the browser at the same time -Combined: Every session works on a different task while you focus elsewhere 2/ Build Your CLAUDE.md File -Self-improvement loop: After every correction, Claude updates its own rules so the mistake never happens again -Lessons file: All rules live in tasks/lessons.md and are reviewed at the start of every session -The command: "After every correction, end with: Update your CLAUDE.md so you don't make that mistake again" 3/ Set Workflow Orchestration Rules -Plan Node Default: Enter plan mode for any task with 3 or more steps before writing a single line -Subagent Strategy: Offload research, exploration, and parallel analysis to subagents to keep main context clean -Verification Before Done: Never mark a task complete without proving it works first 4/ Structure Every Task in 3 Parts -Part 1: Write plan to tasks/todo.md with checkable items before starting -Part 2: Execute with high-level summary at each step, mark items complete as you go -Part 3: Add review section to tasks/todo.md and update tasks/lessons.md after corrections 5/ Set Core Principles -Simplicity First: Make every change as simple as possible, minimal code impact -No Laziness: Find root causes, no temporary fixes, senior developer standards -Minimal Impact: Changes should only touch what is necessary, never introduce bugs 6/ Delegate Entire Problem Types -SQL: Boris has not written a single line of SQL in 6 months, Claude pulls BigQuery data directly via CLI -Bug fixing: When given a bug report, Claude fixes it autonomously, zero context switching required -CI tests: Claude fixes failing tests without being told how This is just one way to use Claude Code the way its builder actually uses it. Want the full Claude Code system? → Comment "CODE" and I will send it to you