Tech Interview Questions

Practice 9,224+ interview questions from top companies including Google, Meta, Amazon, and more. Filter by company, role, and category.

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Machine Learning Engineer + Data Scientist + Software Engineer Interview Questions

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9.2k Questions 486 Companies08.16.2026
Showing 20 results
Role
Meta logo
Meta
Easy
Data Scientist

Calculate Posterior Probability of Flagged User Being Bad Actor

Calculate Posterior Probability of a Flagged User Being a Bad Actor A platform runs a binary classifier that flags users who might be bad actors. You ...

Statistics & Math
107
1
274 people solved
Jul 12, 2025
Netflix logo
Netflix
Medium
Data Scientist

How to Design Effective A/B Tests for Onboarding

Design Effective A/B Tests for Onboarding A consumer subscription app is launching a redesigned onboarding flow for newly registered users. The goal i...

Analytics & Experimentation
29
0
102 people solved
Jul 12, 2025
Netflix logo
Netflix
Medium
Data Scientist

Address Fraud Detection with Imbalance and Concept Drift Solutions

Address Fraud Detection with Imbalance and Concept Drift Solutions You are building a fraud-detection model for an online payments product that must s...

Machine Learning
16
0
67 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

How to Validate Friends' Content Engagement Hypothesis?

Validate Friends' Content Engagement Hypothesis A Meta product team wants to know whether content from a viewer's friends or connected authors drives ...

Analytics & Experimentation
102
0
205 people solved
Jul 12, 2025
Google logo
Google
Medium
Data Scientist

Evaluate Optimal Jogging Routes Feature with A/B Testing

Evaluate an Optimal Jogging Routes Feature with A/B Testing Google Maps is considering a feature that recommends optimal jogging routes, such as safe,...

Analytics & Experimentation
14
0
78 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Design "Restaurants You May Know" Recommendation Algorithm

Design "Restaurants You May Know" Recommendation Algorithm A food-delivery app wants to launch a personalized home-page module called "Restaurants You...

Analytics & Experimentation
36
0
130 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze User Transfer Distribution in Initial Launch Period

Analyze User Transfer Distribution in an Initial Launch Period A new peer-to-peer payments feature has launched. You are asked to analyze the number o...

Statistics & Math
26
0
64 people solved
Jul 12, 2025
Capital One logo
Capital One
Medium
Data Scientist

Discuss Ethical Concerns of Facial-Recognition Technology Implementation

Discuss Ethical Concerns of Facial-Recognition Technology Implementation This is a Capital One data scientist onsite behavioral and ethics panel. The ...

Behavioral & Leadership
27
0
73 people solved
Jul 12, 2025
Google logo
Google
Medium
Data Scientist

Explain Linear Regression to Non-Technical Stakeholders

Explain Linear Regression to Non-Technical Stakeholders You are explaining core machine-learning concepts to non-technical stakeholders during a proje...

Machine Learning
19
0
81 people solved
Jul 12, 2025
Snapchat logo
Snapchat
Medium
Data Scientist

Build Predictive Model for Product Metric: Steps Explained

Build a Predictive Model for a Product Metric You are interviewing for a data scientist role and are asked to design a predictive model for a key prod...

Machine Learning
105
0
349 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Instagram's Short-Video Recommender System Success

Evaluate Instagram's Short-Video Recommender System Success Instagram is launching a short-video recommender feed. You are asked to choose metrics, re...

Analytics & Experimentation
110
0
414 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Data Scientist

Identify User Interest in Group Video Calls Using Data

Identify User Interest in Group Video Calls Using Data You are designing and analyzing a new group video-calling feature for a large social or messagi...

Analytics & Experimentation
175
3
304 people solved
Jul 12, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Determine Appropriate Statistical Test for Comparing Means

Statistical Test for Comparing Mean Active Minutes You have two weeks of experiment data for a new algorithm. The primary metric is user active minute...

Statistics & Math
82
0
326 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Data Scientist

Assess Cultural Fit and Leadership Potential in Candidates

Behavioral Phone Screen: Cultural Fit and Leadership Potential You are in a Data Scientist phone screen focused on cultural fit, leadership potential,...

Behavioral & Leadership
21
0
79 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Data Scientist

Evaluate Email Subject Line Performance Using Hypotheses

Email Subject Line A/B Test: Hypotheses, CLT, and Sample Size An email marketing team wants to evaluate whether a new subject line improves click-thro...

Statistics & Math
17
0
74 people solved
Jul 12, 2025
Instacart logo
Instacart
Medium
Data Scientist

Measure Ultrafast Delivery's Impact Using Synthetic Control Method

Measure Ultrafast Delivery Impact With Synthetic Control Instacart launched Ultrafast Delivery in Miami two months ago and wants to measure its causal...

Analytics & Experimentation
57
0
173 people solved
Jul 12, 2025
Instacart logo
Instacart
Medium
Data Scientist

Investigate Instacart Revenue Decline Using Weekly Data

Investigate an Instacart Weekly Revenue Decline Instacart's weekly revenue fell 4% versus the prior week. Initially, you only have the historical week...

Analytics & Experimentation
25
0
87 people solved
Jul 12, 2025
Roblox logo
Roblox
Hard
Data Scientist

Determine Player Preference for Local Game Creators

Player Preference for Local Game Creators A Roblox analytics team wants to understand whether players prefer games created by local creators, such as ...

Analytics & Experimentation
30
0
77 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Determine Superiority of Model A Using Hypothesis Testing

Hypothesis Test: Is Model A Better Than Model B? A search feature marks a session as successful only when both relevancy and accuracy binary flags equ...

Statistics & Math
26
0
104 people solved
Jul 12, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Investigate Causes of Cold Meal Deliveries

Investigate and Reduce Cold Food Deliveries A delivery service is receiving customer complaints that meals arrive cold. You need to investigate the ro...

Analytics & Experimentation
43
0
246 people solved
Jul 12, 2025