I don't feel the need to justify my salary, since I'm simply lucky in that regard. But I'm pretty sure you couldn't do my job just because you had access to a coding agent. Most of my time at the office is spent discussing high-level architecture and strategy, ideas, customer requests, backward compatibility, safety, security, quality assurance, etc.

Writing the actual code is a significant part of that, but the codebase is so complex that even Opus 4.7 and GPT-5.5 struggle with it without being fed a *lot* of context and constraints. And even then, they need a *lot* of steering due to making bad decisions that only someone with an intimate knowledge of the theory behind our software is able to catch.

I can only assume that people who think coding agents can completely replace an actual developer mostly deal with trivial software regarding both scope and the type of customers they serve (individuals instead of big companies in industry).