Software engineers' new job isn't writing code — it's designing the boundaries AI agents can't break

The article argues that tools like Cursor, Claude Code, and agentic workflows are reducing the importance of writing initial code by hand. As AI agents generate implementations, tests, and refactors, engineers increasingly focus on defining boundaries, intent, and review systems that keep automated work aligned with real software goals.

The emerging trend is a shift from coding as direct construction to engineering as system governance. Teams that succeed with AI agents will likely invest more in architecture, constraints, observability, and validation, because the biggest risk is no longer slow code creation but fast, plausible changes that drift from correct behavior.