An external supplier who has placed mobile devs there already sent me in as a generalist developer, maybe with a slight UIUX emphasis, with no real job description. That lack of detail was not a hinderance for me since I came prepared with a pitch for their webapp-to-be though. They asked for a 45m interview in person in their office the next day and I was able to make it. They were gracious and cool though obviously the foremost question to they and I was, with their 2 native apps and 2y since founding, why weren't they hiring exclusively native app devs? They said they'd think for a week about this webapp to justify the role. The next day, they said indeed they were only doing just that.