I applied online. The process took 4 weeks.

• Hackerrank Test, HR Interview, two technical programming interviews, 30 mins chat with head of engineering.
• Some Hackerrank questions were a bit challenging, but quite typical (DFS, DP, REST). I was given 3 hours to solve, which was enough.
• HR call: A chat with the HR, who was very nice. Mentioned about my software engineering projects and experience with ML.
• First interview was with engineering manager. Specific questions about my cv, experience and the work I have done but more in depth than HR call.
• Technical coding challenge, both questions were not too hard (easier than Hackerrank). Coded defensively i.e. check the validity of input etc. Pair Programming.
• OOP, started with a simple design of an object and then gradually added more and more complexity, did time and space optimisation.

typical questions e.g., shortest path, fundamental algos in CS