"Hit the ground running" is fairly common in startups as they don't have the resources to train. I shortlisted a candidate once who clearly was an experienced

"Hit the ground running" is fairly common in startups as they don't have the resources to train. I shortlisted a candidate once who clearly was an experienced developer, but because he didn't have any JavaScript experience, the CTO discarded his application. Very shortsighted but his argument was "We don't have time train people and JavaScript is a very popular language"