Startups (depending on the size) are both wonderful and terrible places for a new bootcamp grad. There is a lot to learn, and learn quickly, which is something any bootcamp grad has had to master -- but there is often a dearth of mentoring and, as time goes on, patience for junior mistakes. Larger startups are much better than small ones, in my experience working both on the startup and bootcamp (instructor, mentor) sides of the table -- especially larger startups who have already hired from that bootcamp, or a similar one, before. Then you have the alumni-mentor train going, and life is great.