Spotify

Music streaming platform using ML for personalization and recommendation.

4 Rounds ~21 Days Hard

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The Interview Loop

Recruiter Screen (30 min)

Standard fit check, behavioral questions, and resume overview.

Technical Loop (3-4 Rounds)

Deep dive into domain knowledge, coding, and system design.

Interview Question Bank

All Roles Backend Engineer 2 Data Engineer 6 Data Scientist 4 Full Stack Engineer 1 Software Engineer 1

All Topics System Design 66 Algorithms 47 Culture Fit 31 Leadership 21 Machine Learning 18 SQL 14 Product Execution 8 Product Design 8

Backend Engineer • Technical • medium

Write a SQL query to find the top 3 artists by total listening time in the last 30 days, given tables for 'users', 'plays', and 'tracks'.

#SQL #Joins #Aggregation #Window Functions

Practice

Backend Engineer • Technical • easy

Design the database schema for a user's 'Your Library' feature, which includes saved tracks, albums, and podcasts. How do you optimize for fast retrieval?

#Database Schema #Indexing #Normalization

Practice

Data Engineer • Technical • easy

Write a SQL query to find users who listened to the exact same song more than 10 times in a single calendar day.

#GROUP BY #HAVING #Date Functions

Practice

Data Engineer • Technical • medium

Write a SQL query to identify the top 3 most skipped tracks (played for less than 30 seconds) in the last 24 hours.

#Filtering #Sorting #LIMIT

Practice

Data Engineer • Technical • hard

Write a SQL query to calculate the Month-over-Month retention rate of Spotify Premium users.

#Self Joins #CTEs #Cohort Analysis

Practice

Data Engineer • Technical • hard

Write a SQL query to find the median listening time per user without using built-in median functions.

#Window Functions #PERCENT_RANK #Math

Practice

Data Engineer • Technical • hard

Write a query to identify 'bouncing' users—users who started a playlist, listened to less than 10 seconds of the first track, and did not play another track within 1 hour.

#LEAD/LAG #Window Functions #Time Intervals

Practice

Data Engineer • Technical • medium

Write a SQL query to calculate the 7-day rolling average of streams for each artist over the past month.

#Window Functions #Aggregations #Time Series

Practice

Data Scientist • Coding • hard

Given a table of user play events, write a query to calculate the average session length. A session ends after 30 minutes of inactivity.

#Sessionization #Window Functions #Advanced SQL

Practice

Data Scientist • Coding • medium

Write a SQL query to find the 7-day rolling average of daily streams for a specific artist.

#Window Functions #Time Series

Practice

Data Scientist • Coding • hard

Write a query to identify users who listened to the exact same sequence of 5 songs.

#String Aggregation #Window Functions #Self Joins

Practice

Data Scientist • Coding • medium

Write a SQL query to find the top 3 most streamed songs per country in the last 30 days.

#Window Functions #Aggregations

Practice

Full Stack Engineer • Technical • medium

How would you design the database schema for a music streaming service? Include tables for Users, Songs, Artists, Albums, and Playlists.

#Database Design #Normalization #SQL

Practice

Software Engineer • Technical • medium

Write a SQL query to find the top 3 most listened to artists per country in the last 30 days from a 'streams' table.

#Window Functions #Aggregations #Date Functions

Practice

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The "Standard" Interviewer

Senior Engineer

Focuses on core competencies, system constraints, and clear communication.

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Think Out Loud

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