One engineer runs multiple Claude Code sessions simultaneously, each in its own git worktree; repetitive verification work goes to subagents. The bottleneck shifts from 'writing code' to 'reviewing output.'
The official docs split Claude Code's parallel work into 4 approaches: subagents delegate inside one session, agent view lets you supervise background sessions yourself, agent teams coordinate workers through a lead, and dynamic workflows run scripted fleets of subagents with cross-checks; file collisions are always handled by worktrees. Includes a translated comparison table and a three-question decision guide.