I've known a few people involved in Bitmaker.
We had someone apply who completed Bitmaker, and she applied for a development role. I work in developer relations. She was initially rejected for a developer position because she wasn't experienced enough. She caught my eye though, and I hired her on as a developer relations intern. She quickly became my team's dedicated developer, and built us a lot of stuff to make our lives easier. I think she was really green coming out of Bitmaker, but we were able to provide her an environment where she could get acquainted with working in a larger organization and get some real world experience coding professionally while not in a developer role. She quickly became incredible, and moved off my team to be a junior developer. She's now a senior developer after a few years, and is absolutely killing it here. I'm super proud of her, and thrilled we took a chance on her.
Sample size of one, I know. And she really is exceptional, so I'm sure she would have been successful with or without Bitmaker, so take this with a large heap of salt.