I've been at single-digit startups and *500 companies and entrepreneurial role fits the bill. I'd say in some cases they are the CEO of their own business unit with capacity for setting the product direction, selecting the team and establishing/punishing timetables. Usually in that case, they'll have X project managers under them carrying out instructions, but in the case of a small company they do usually sit somewhere between ops/tech/mktg and somehow guide with diplomacy.