The focus of "code review" is shifting from line-by-line checks to validating an AI's initial architectural plan. After plan approval, AI agents like OpenAI's Codex can effectively review their own generated code, a capability they have been explicitly trained for, making human code review obsolete.

AI coding has advanced so rapidly that tools like Claude Code are now responsible for their own development. This signals a fundamental shift in the software engineering profession, requiring programmers to master a new, higher level of abstraction to remain effective.

Snyk founder's new venture, TESOL, posits that AI will make code disposable. Instead of code being the source of truth, a durable, versioned 'spec' document defining requirements will become the core asset. AI agents will generate the implementation, fundamentally changing software development.

Interacting with powerful coding agents requires a new skill: specifying requirements with extreme clarity. The creative process will be driven less by writing code line-by-line and more by crafting unambiguous natural language prompts. This elevates clear specification as a core competency for software engineers.

As AI agents handle the mechanics of code generation, the primary role of a developer is elevated. The new bottlenecks are not typing speed or syntax, but higher-level cognitive tasks: deciding what to build, designing system architecture, and curating the AI's work.

Cisco is developing its AI defense product entirely with AI-written code, with human engineers acting as "spec developers." This fundamentally changes the software development lifecycle, making code review—not code creation—the primary bottleneck and indicating a future where engineering productivity is redefined.

Inspired by fully automated manufacturing, this approach mandates that no human ever writes or reviews code. AI agents handle the entire development lifecycle from spec to deployment, driven by the declining cost of tokens and increasingly capable models.

The traditional definition of a developer, centered on mastering programming languages, is becoming obsolete. As AI agents handle code generation, the most valuable skills are now clarity of thought, understanding user needs, and designing robust systems, opening the field to new personas.

As AI writes most of the code, the highest-leverage human activity will shift from reviewing pull requests to reviewing the AI's research and implementation plans. Collaborating on the plan provides a narrative journey of the upcoming changes, allowing for high-level course correction before hundreds of lines of bad code are ever generated.