Both excellent points @IamSB, machine learning is just a different type of algorithm and algorithms are commonly used in software engineering, so the hiring process shouldn't be any different. Calling it ML instead of machine learning itself is psuedo-nomenclature. Also, the best designed products start with serving your own needs so an ML company definitely must automate their hiring process. Shows they are chewing their own dogfood. Specially in this case, since the value proposition of applying machine learning to a real world problem is often in question.