Zepto | Staff Engineer | Bangalore | Oct 2024 [Reject]

Round 1: LLD Round

Questions:

DREAM 11
1. Game leaderboard (User leaderboard)
2. User can login.
3. User can view the scheduled games.
4. Users enter the Game, and create a team with players. - configurable?
5. Depending on the player's performance each player has a score
6. User's score is the sum of the scores all the players on their team

DB design
How will you generate ranks

Input Stream of game updates are coming like this:
{
    “Game_id”: “ind vs austria”,
    “Instance_id”: “ball_id”,
    “Scores”: {
            “Player_id1”: 2,
            “Player_id2”: 1
    }
}

Focus was on Database design & entity relations. In last 10 mins, around how will you update the DB with feasible latency of around 30 secs & update scores & display top 10 rankers.

Round 2: HLD Round

Questions:

Design facebook msg app

The interviewer was not interested in the entire interview process. I tried interacting with him but it was a failed attempt. He did not turn on his video, did not give his introduction or asked mine either. Copy pasted the question & asked to solve. [This was a clear Red flag for the company, they are unprofessionals].