What is Purple squirrel
Recruiting slang for a candidate who matches every requirement in a job description perfectly.
In plain terms
The term captures how rare a perfect multi-requirement match is, especially when a job description spans two disciplines. A purple-squirrel hunt can burn weeks of sourcing before anyone questions the spec. The professional move is to size the real pool early and bring that number to the hiring manager.
What it tells you about a developer
A search that truly demands a purple squirrel runs long and ends in a candidate-driven negotiation. More often, showing the pool size wins permission to drop the weakest requirements, and the search opens up.
Related
Read the lesson on Purple squirrel More in What the job really needs