The Claude Senior Developer Skill activates senior dev mode: rigorous code review, systematic refactoring, testing pyramid, methodical debugging.
What it does
- Code review focused on correctness + readability.
- Refactor without changing behavior.
- Testing pyramid (unit, integration, e2e).
- Methodical debugging with root-cause.
When to activate
- PR review.
- Critical module refactor.
- Elusive bug debugging.
- Increasing test coverage.
Limitations
- Without full codebase context can suggest incompatible changes.
- Library knowledge has a cutoff.
FAQ
Does it replace a senior human dev?
No. Accelerates reviews and debugging, but merge responsibility stays human.
Better in Claude Code?
Yes. Claude Code reads the whole repo and applies the Skill with real context.
