There was a test which had 5 sections: Math + IQ + OOP + Databases + Algorithms. Then, there was the HR interview. After that, a technical interview with a senior Software Developer.
The follow up interview is supposed to be after a week or so(assuming you get shortlisted for that). In my case, the follow up interview happened immediately after the initial one. This interview was with a Project Manager. This last one went really well.
I was expecting a call the next day but they needed this position(Python Dev) to be filled urgently. I got a call within 3 hours after the interview. However, they offered me an internship, which I took.