I applied via employee referral and contacted via HR a week later. The interview consists of the following steps: - Initial Interview (30 mins talk with an HR for a general background check and ) - Pair Programming (1-hour pair programming interview with two senior engineers online) - iOS Project (They send you a project and request you to complete it just before attending an onsite interview. It's not a pre-requisite for onsite interview) - Onsite Interview (3 hours interview, first-hour extending iOS app, iOS technical interview, behavioral interview with engineering manager.) I applied the UK visa for attending the onsite interview but it was refused by the consulate. I requested for the offsite interview but they rejected. Therefore, I couldn't proceed further. However, I really had fun during the first two stages. It's a great company and product to work for. I hope our paths will cross again in the future.