Mark Rosett writes on The Hustle how Googling "python lambda function list comprehension" revealed a box on top of the search results that said "You're speaking our language. Up for a challenge" with buttons that said "I want to play," "No thanks," and "Don't show me this again."
Rosett decided to play and was sent to timed programming challenges (you could code in Python or Java). After passing a total of six challenges over two weeks, Rosett was emailed by a recruiter and went through the interview process (sans the technical screening, since the online exercises already proved his skills). And he got and accepted the offer.
This is a clever way for Google to recruit new programmers, and I wonder if they also use search queries to find potential employees in other fields. For example, if I typed in specific SEO or ad marketing terms, would their ad department offer online challenges
In any case, keep on Googling your coding problems, coders. There's a hidden recruiting tool in Search and you might just get an invitation to play. "Puzzles are fun," Google says, "Search on."