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Spotify Data Scientist (Senior Level) Interview Preparation Guide

Data Scientist
Spotify
Senior
6 rounds
Updated 6/21/2026

Spotify's Data Scientist interview process is a rigorous, multi-stage evaluation designed to assess technical proficiency, machine learning expertise, problem-solving abilities, and cultural fit. For Senior Level candidates (5-12 years experience), the process emphasizes domain mastery, strategic thinking, leadership potential, project ownership, and the ability to drive measurable business impact through data-driven insights. The entire evaluation spans 4-6 weeks and includes a recruiter screen, technical phone screening, and four distinct onsite rounds covering coding, system design, data science fundamentals, and behavioral assessment.

Interview Rounds

1

Recruiter Screening

2

Technical Phone Screen

3

Onsite Interview Round 1: Programming and Data Structures Test

4

Onsite Interview Round 2: System Design

5

Onsite Interview Round 3: Data Science and Analytics Interview

6

Onsite Interview Round 4: Behavioral and Cultural Fit Interview

Frequently Asked Data Scientist Interview Questions

Advanced Querying with Structured Query LanguageMediumTechnical
19 practiced
Write SQL to pivot monthly sales into columns Jan..Dec for table sales(user_id, sale_month DATE, amount). Also show how to unpivot (convert columns back to rows). Use standard SQL conditional aggregation or indicate DB-specific functions you would use (e.g., crosstab in Postgres).
Edge Case Identification and TestingMediumTechnical
71 practiced
Given a labelled dataset with timestamps, describe the concrete tests and checks you would run to detect label leakage before training. Include automated checks (for example, verifying no feature has greater predictive power on future labels than past labels), exploratory checks (feature-time correlations), and sample SQL or pandas checks to identify features with timestamps after the label timestamp. Describe what to do if you find potential leakage.
Model Evaluation and ValidationEasyTechnical
87 practiced
Given the following confusion matrix for a binary classifier:
| Actual \ Predicted | Positive | Negative ||--------------------|----------|----------|| Positive | 70 | 30 || Negative | 20 | 880 |
Compute precision, recall, specificity, and accuracy. Then interpret what the model is doing well and where it is failing in plain language for a stakeholder who is not technical.
Feature Engineering and SelectionEasyTechnical
21 practiced
Explain cyclical encoding for timestamp-derived features (for example, hour-of-day and day-of-week). Show the mathematical transform you would use to encode an 'hour' column into two features and explain why cyclical encoding is preferred over integer encoding for periodic signals.
Cross Functional Collaboration and CoordinationMediumTechnical
41 practiced
Describe a template and cadence for a cross-functional metrics dashboard to help product, engineering, and business leads monitor model health (data drift, performance) and shared outcomes (conversion, revenue). Include ownership and escalation rules.
Data Storytelling and Insight CommunicationMediumSystem Design
80 practiced
You have a dataset with columns: user_id, event_name, event_timestamp, country, plan_type, revenue, churn_flag. Design the visuals and six metrics for a weekly product health dashboard intended for the growth team; for each widget explain why it matters and how you'd order them on the screen.
Clean Code and Best PracticesHardTechnical
74 practiced
Propose an organization-wide plan to adopt coding standards across a 50-person analytics org. Include selection of tools (formatters, linters, type checkers), rollout phases, training, measurement of adoption and quality (metrics), and handling of legacy code that fails checks.
Advanced Querying with Structured Query LanguageEasyTechnical
18 practiced
Given a table events(user_id, event_time, event_type), write a SQL query (Postgres/ANSI) that returns the latest event per user (user_id, event_time, event_type). Use window functions (row_number) and briefly explain why window functions may be preferred over a correlated subquery here.
Edge Case Identification and TestingHardSystem Design
81 practiced
Design a comprehensive end-to-end testing and validation strategy for a nightly retraining pipeline that consumes streaming data with late-arriving events and backfills, must support schema evolution, and meet a production SLA of completing retraining within 4 hours. Describe unit tests, integration tests, synthetic test harnesses for late events, contract tests for schema evolution, and production validation gates (metrics, shadow testing, canary). Include how you would simulate late arrivals and backfills in tests.
Model Evaluation and ValidationEasyTechnical
69 practiced
You're setting up 10-fold cross-validation for a fraud classifier where only about 1% of transactions are fraudulent. Walk through why you'd use stratified folds instead of plain k-fold here, and what could go wrong with your evaluation if you didn't.
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