First a online algorithm test, pick two out of five, not really hard. Then they will reach you for a telephone interview. You can choose a date from what they provided. The telephone interview is not related to technical problem, mostly like an HR interview. I got a reject email after telephone interview which claimed that they have found more suitable guys.

I applied online through their Website and heard back the next day with an email asking to do a HackerRank question. There was five questions, of which you had to do a minimum of 2. I did two and then heard back a couple days later wanting a HR phone interview. Then never heard back after the phone interview.

Applied online and received an invitation to complete a coding test via Hackerrank. Was given 90 minutes and 5 questions, and the understanding was you had to complete 2 questions minimum. Was only able to complete 1 question, although half completed 2 more - they were VERY difficult and long-winded. Would recommend managing your time with these questions, and choosing the right questions to answer from the start.