The Best Engineers Stopped Writing Prompts: The 4 Layers That Replaced Prompt Engineering (opens in new tab)

Last Updated on June 22, 2026 by Editorial Team Author(s): Chew Loong Nian – AI ENGINEER Originally published on Towards AI. The Best Engineers Stopped Writing Prompts: The 4 Layers That Replaced Prompt Engineering Boris Cherny built Claude Code. In June 2026 he said the quiet part out loud: “I don’t prompt Claude anymore. I have loops running that prompt Claude and figuring out what to do. My job is to write loops.” In four years, the highest-value skill in applied AI has been rewritten 4 ti...