Okko
Real technical interviewAugust 18, 2025
Technical: Python runtime, coding and SQL RecSys metrics
Python internals, argument passing, FastStatistics, embedding-code review, SQL LAG and Precision/Recall@K from movie recommendations.
3 questions3 tasks1 hrAudio recording available
Аудио и материалы
Аудио собеседования
0:00 / 59:53
Этап 2 из 4OkkoSenior Data Scientist / RecSys2025-08-15 - 2025-09-02
Собеседования в Okko: рекомендательные системыТехническое собеседование в Okko
Выводы и как готовиться
- The round mixed Python internals with practical coding and SQL analytics, rather than pure LeetCode.
- For Python, the interviewer cared about precise runtime semantics: GIL, bytecode and pass-by-object-sharing.
- The SQL part was RecSys-specific: previous watched item and per-user Precision/Recall@K from recommendation ranks and watch history.