I applied online. The process took 1 week. I interviewed at 4PSA
Interview
Online test with various unrelated questions (some OS questions, sorting algorithms, etc.), HR interview , technical one(medium difficulty) and finally a short interview with the CEO (I think). They were very fast with their response.
Interview questions [1]
Question 1
OOP concepts, such as "How do you declare a static method in Python?"
Some questions related with data structures and algorithms (about heap, BSTs)