Questions that have appeared at tiktok for an engineering (Case Study) interview.

1. System Design

Question: How would you design a feature that allows users to collaborate on a video? What considerations would you take into account?

Question: Design a system to handle the growing amount of videos being uploaded and streamed each day on TikTok. What challenges might you face and how would you address them?

Question: How would you design a recommendation system for TikTok's short videos? What factors would you consider?

2. Scalability and Performance

Question: TikTok's user base is rapidly growing. How would you ensure that our systems can scale to support this growth?

Question: Considering the global nature of TikTok, how would you ensure a smooth user experience for people accessing the platform from different parts of the world?

Question: How would you optimize the performance of TikTok's video streaming service to ensure minimal buffering and lag?

3. Data Management

Question: Given the vast amount of user data that TikTok collects, how would you design a system to store, process, and analyze this data effectively?

Question: How would you ensure the confidentiality and security of user data, considering the strict regulations and privacy concerns surrounding this issue?

Question: How would you design a system to handle the real-time analytics and reporting of data on TikTok?

4. Product Development

Question: If you were asked to design a new feature for TikTok, how would you approach this task? What steps would you take to ensure its success?

Question: How would you approach the task of improving an existing feature on TikTok? What steps would you take to understand the problem and come up with a solution?

5. Infrastructure

Question: TikTok is a video-heavy platform. What considerations would you make in terms of infrastructure to support this?

Question: Given the real-time nature of TikTok, how would you design a system to handle the constant influx of new content and user interactions?