I've been sitting at both sides of the table via TopTal. First I went through their interview process, which I didn't like and the experience afterwards wasn't great. More recently I helped to hire people via Toptal to work on a project I consulted for, and that was good. Really great developers, and what I can see they have a lot of flexibility.

However, have you considered remote work instead? There is more companies open to that setting and you can also have a good time flexibility. I work for game studio in Dublin - we offer fully remote setup, "unlimited" holidays and flexible working hours. Your skillset matches exactly what we need. But even if you aren't interested in making games for a living (python & java fullstack development) there is tons companies like us. I know because we have to compete with them for the best talent.