I was approached by an Amazon recruiter that seemed to have used some sort of algorithmic tool that had keyed on specific information about in my github profile

I was approached by an Amazon recruiter that seemed to have used some sort of algorithmic tool that had keyed on specific information about in my github profile. Specifically, it mentioned that I had more than 1 public repository with 'stars' from more than 2 people and 1 or more forks. I asked the recruiter about this and she mentioned that she used a tool like this to find potential recruits. It didn't sound like it was a company-wide thing, though.