Probably the best interview experience I had. The team was very friendly, professional and helpful from the first day. The interview process was pretty tough on a technical level, and they also give very high importance to your fit with the team and the company's culture. The interview process went as follows: - (off-site) Algorithmic online test - (on-site) Screening interview and meeting some of the employees - (off-site) Open-ended questions on a paper of their choice - (on-site) Software engineering interview - (on-site) Mathematical interview - (on-site) Research interview - (on-site) Founder interview The interview process was very relaxed, they provided lunch and made me feel part of the team. The work environment and work-life-balance seem great for a booming start-up. I turned down the offer due to personal reasons, but I would highly recommend it and hope to join them in the future.