I had a phone screen with their HR/recruiting person, a phone interview with the hiring manager, then a 6 hour multi-panel interview with key team members and manager, with a final presentation & Q&A with the full team. Overall it was very comprehensive.

Applied online through one of the Job Boards Contacted by HR the next day. Gone through 3 rounds of interviews, first one is HR one, the second one is a Telephonic for about an hour. And the final one is an onsite one for 4.5 hours. Onsite one is included one on ones with multiple team members, managers and a presentation of your chosen topic for 30 minutes.