There was only one round of interview by a senior staff (actually the only staff besides the CEO). There were 3 maths questions to be answered in 20 minutes. After that, the interviewer asked about experience in coding and stats/maths.

Send CV to company website. Waited for 2 months to get replied. Onsite competency and technical questions, 1 round by CEO himself. NO news after the interview after 1 month.