After sending an application the recruiter was trying to reach me by phone without scheduling any time when it suits our both to have it, so you should just wait for a call whenever the recruiter decides to call you.
Invitation to the first interview will be send with already proposed time and date, so if you need to change it, you need to ask of other options.
The same works with other inerview steps, they just share what suits them and you should communicate to change it.
After 4 interviews, they sent feedback after 28th days and they hadn't specify anything about the reason of not moving forward.
So the interview process is on a really first stages, I had better experience even in startups.
The teammates are nice and friendly, hiring manager is very nice person to talk.