Hacker Wanted

Like most in the tech industry, I get emails from recruiters from
time-to-time. Most I file in the bit-bucket pretty quickly. But one
I received the other day was interesting for the wording used in the
job description:

"Self-learner, hacker, open-source advocate who can work on large
scale web systems..."

I have never seen the use of the word 'hacker' in a job description
before, especially used correctly, with its original, positive
connotation.