Don't waste your time. Very unprofessional. The company is disorganized. The definition of the position is unclear (although it is seemed specific) and they don't know what kind of people they want exactly. A company with official and good looking website, unprofessional and ridiculous inside.

The process began with a 30-minute call with the manager and HR, followed by a 30-minute test on Codility. This was succeeded by an approximately 2-hour technical interview with the CTO, where we covered the basics of machine learning and deep learning. There were also questions related to SQL and one simple problem-solving task. The final step was a meeting with the CEO.