I've been following this series of posts on this job search (see https://news.ycombinator.com/item?id=30003106), and this post really resonated with me. I've experienced interviewing companies making unreasonable demands before, and generally, these are the companies to avoid. In my experience, they're also the companies that are most resistant to making any allowances to the interviewee's personal circumstances. As always, the interview is a two-way process, and it gives you a view of what working at a company could be like. When a company treats you badly as a candidadte, they don't suddenly improve when you become a full-time employee.