One engineer, three agents — the new shape of shipping

When people ask what an AI-native engineer does differently, the honest answer is: less typing, more orchestration. A senior who used to bounce between IDE, terminal, and PR review now runs three agentic threads at once, supervising each one.

The catch nobody mentions: orchestrating three parallel agents is harder than writing the code yourself. You need a strong mental model of the whole change, sharp taste about what "good" looks like, and the discipline to throw away an agent's output without sunk-cost guilt. Junior engineers without that taste end up shipping three mediocre PRs instead of one good one.

This is also why "we can replace the team with AI" stories collapse. It's not headcount reduction — it's leverage. One senior engineer running three agents replaces a team of three mid-level engineers. Take the senior away and the agents produce mush.

The hiring implication: optimize for engineers who already have strong review instincts. The AI part can be taught in a week. Taste cannot.