CIAN
ML System Design at CIAN
A real interview with the full timeline, linked technical questions and practice materials from CIAN.
3 questions8 cases1 hr 43 minAudio recording available
Аудио и материалы
Аудио собеседования
0:00 / 1:42:46
Этап 3 из 4CIANML Engineer / Data Scientist2025-09-05 - 2025-10-06
Собеседования в CIAN: ML Engineer / Data ScientistML System Design в CIAN
Выводы и как готовиться
- The core case is a гибридный поиск/ranking system for free-form real-estate queries, not a generic RAG chatbot.
- Geo and monetization are first-class constraints: an opaque dense retriever is not enough for marketplace search.
- The interview repeatedly tests whether the candidate separates offline item enrichment, online query parsing, candidate generation, ranking, blending and reliability fallbacks.