Anaya, you consider leaving the job but not the home itself. Is moving out an option for you? I understand there are financial considerations, but can you get creative and stay with a friend or relative until you could manage another place on your own.
The impact this behavior has on your job is just one piece of the greater impact it has on your mental and emotional wellbeing. No one should be subjected to this. And that you are confident he could and would find a way through the very clear boundary of a locked door is disturbing and possibly dangerous.