IME (which is limited but includes (in the past) Arm fwiw) developer relations/outreach/application engineering is done by people with an engineering background primarily, not a marketing one. I've considered such job listings myself, they always seem to be looking for experience with the tools rather than experience selling.

Well, yes, of course the job of developer outreach is performed by engineers, but under the aegis of marketing - which was the point of my statement above, unless I miscommunicated.

Ah ok, I misunderstood your comment then.