Meta Data Scientist Interview Questions

Meta’s Data Scientist interviews target candidates who can turn large-scale product data into clear, measurable product decisions. Expect a blend of technical and product-focused assessments: Meta Data Scientist interview questions often probe SQL and Python data manipulation, statistical inference and A/B test design, metric definition and instrumentation, and product sense around engagement and growth. Distinctive to Meta is the emphasis on scale, experimentation, and the ability to communicate actionable insights to engineers and product managers; interviewers typically evaluate both analytical rigor and storytelling clarity. The process usually begins with a recruiter screen, moves to one or more technical screens (coding/SQL plus a product or metrics case), and culminates in a loop of interviews that combine analytics, research-design, and behavioral rounds. For effective interview preparation, prioritize timed practice on data manipulation problems, refresh hypothesis testing and power intuition, rehearse product-metric case studies aloud, and craft concise STAR stories that emphasize measurable impact. Complement technical practice with mock interviews and clear explanations of tradeoffs so you can translate analyses into product recommendations under time pressure.

617 Questions 1 Company07.06.2026
Showing 20 results
Role
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Meta
Medium
Data Scientist

Design robust group size limiting for calls

Design the admission-control and enforcement algorithm to limit group-call size under real-world race conditions. Constraints: multiple SFU edges in m...

Coding & Algorithms
7
0
55 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Demonstrate leadership in cross-functional collaboration

Question This is the Meta Data Scientist onsite behavioral & leadership round. The interviewer works through a set of leadership prompts and expects y...

Behavioral & Leadership
9
0
82 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Analyze daily comments distribution and sampling

Daily Comments per Active User: Sampling and Inference You have, for a given day d, the count of comments made by each active user. Let there be m act...

Statistics & Math
7
0
50 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design a restaurant recommender under constraints

This question evaluates a candidate's competency in designing scalable machine learning recommender systems, covering retrieval and ranking architectu...

Machine Learning
4
0
42 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Compute probability an account is fake

This question evaluates understanding of conditional probability and Bayesian reasoning, specifically interpreting base rates alongside true positive ...

Statistics & Math
28
1
448 people solved
Jan 17, 2026
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Meta
Medium
Data Scientist

Evaluate AI-assisted ad creation

Meta is considering launching an AI-assisted ad creation feature for advertisers. The feature helps advertisers generate ad copy and/or creatives insi...

Analytics & Experimentation
27
0
185 people solved
Feb 23, 2026
Meta logo
Meta
Hard
Data Scientist

Design Machine Learning Model for Facebook Groups Post Ranking

Design Machine Learning Model for Facebook Groups Post Ranking ML System Design: Ranking Facebook Groups Posts in News Feed Scenario You are designing...

Machine Learning
4
0
51 people solved
Aug 4, 2025
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Meta
Easy
Data Scientist

Describe a challenging project and work-style conflicts

Question This is the Meta Data Scientist onsite behavioral & leadership round. The anchor prompt is to describe your most challenging recent project e...

Behavioral & Leadership
15
0
100 people solved
Dec 6, 2025
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Meta
Easy
Data Scientist Locked

Compute this-year spend share of last-year whales

This question evaluates proficiency in data manipulation and analytics engineering, specifically SQL and Python skills for aggregations, joins, calend...

Data Manipulation (SQL/Python)
5
1
41 people solved
Feb 15, 2026
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Meta
Medium
Data Scientist

Compute seller counts and vehicle share

You are given two tables: 1. listing_interactions - buyer_id BIGINT - seller_id BIGINT - event_date DATE - product_id BIGINT - listing_...

Data Manipulation (SQL/Python)
6
0
51 people solved
Jan 5, 2026
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Meta
Hard
Data Scientist

Design bot detection and evaluate trade-offs

Bot-Detection System Design for Comment Activity Context You are designing and evaluating a machine learning system to detect automated (bot) comment ...

Machine Learning
3
0
44 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Choose threshold under asymmetric costs

You own a credit-card fraud classifier deployed as a probability scorer. Choose an operating threshold under asymmetric costs and justify it quantitat...

Machine Learning
6
0
58 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Compare Bayesian and frequentist decisions

A/B Test With Beta–Binomial Posteriors and Decision-Making Under Asymmetric Costs You ran a two-arm A/B test on a binary KPI with independent Beta(1, ...

Statistics & Math
10
0
134 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Apply sequential testing without p-hacking

Sequential Monitoring With Early Stopping Context: You are planning a two‑sided hypothesis test with continuous monitoring and early stopping for effi...

Statistics & Math
8
0
102 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Describe a leadership STAR story

Behavioral & Leadership: Protecting Analytical Rigor Under Deadline (STAR) Context: You are interviewing for a Data Scientist role. The interviewer wa...

Behavioral & Leadership
4
0
61 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Compute p-values, power, and adjust errors

Statistics Interview Task (Onsite) You are evaluating a product experiment and related analytics questions. Answer precisely, showing calculations and...

Statistics & Math
7
0
62 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compute posterior and event counts in fraud screen

Fake-Account Screening with Threshold on 5 Signals You are designing a rule-based screener that flags an account if at least k of 5 binary signals fir...

Statistics & Math
2
0
43 people solved
Oct 13, 2025
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Meta
Medium
Data Scientist

Evaluate New Model's Performance Against Existing System

Evaluate New Model's Performance Against Existing System Scenario You are evaluating a new machine-learning model that detects harmful content on a la...

Machine Learning
4
0
37 people solved
Aug 4, 2025
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Meta
Medium
Data Scientist

Explain Your Motivation for Career Transition and Role Interest

Explain Your Motivation for Career Transition and Role Interest Behavioral Phone Screen — Data Scientist Context You’re in a recruiter/technical phone...

Behavioral & Leadership
5
0
46 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate and Experiment with Harmful Content Detection Model

Evaluate and Experiment with Harmful Content Detection Model Evaluating a Harmful-Content Detection Model: Offline and Online Context You are given a ...

Machine Learning
76
0
153 people solved
Aug 4, 2025
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Meta Data Scientist Interview Prep
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Frequently Asked Questions

How difficult are Meta Data Scientist interview questions?
Meta Data Scientist interviews are typically challenging because they test both depth and breadth: technical fluency, statistical thinking, product intuition, and clear communication. Expect medium-to-hard SQL and coding problems alongside statistics and experiment-design questions that probe conceptual understanding rather than rote formulas. Senior roles add system and measurement tradeoff discussions and leadership expectations. Interviewers evaluate correctness, clarity, assumptions, and business impact, so partial solutions can still score well if you surface limitations and next steps. Preparation should emphasize translating technical results into actionable product recommendations as much as solving the raw problem.
What is the typical Meta Data Scientist interview process and where does each topic show up?
The Meta Data Scientist process usually begins with a recruiter screen, moves to a technical screening (live SQL/Python or a take-home), and then a multi-round onsite or virtual loop of four to five interviews. SQL and data-manipulation tasks appear in screening and the analytics rounds. Experiment design and statistics show up in research-design and metrics interviews. Product-sense rounds evaluate metric selection, tradeoffs, and impact. Behavioral rounds probe collaboration, ownership, and influence. Coding or algorithmic questions may appear depending on role level, and senior interviews emphasize scaling, measurement validity, and cross-functional leadership.
How long should I prepare for Meta Data Scientist interviews and what should a timeline look like?
A focused preparation timeline of six to eight weeks often works well for experienced candidates, with longer ramps for those switching fields. Start by solidifying core SQL and Python skills and practicing timed problems, then layer in statistics, experiment design, and product-case practice. Midway, incorporate mock interviews and full-length loops to practice pacing, storytelling, and translating analyses to impact. In the final weeks, refine STAR behavioral stories, review past projects with clear metrics, and run targeted drills on weak spots. Regular feedback and simulated interview conditions dramatically improve interview-day composure and clarity.
What are the key subtopics I must master for a Meta Data Scientist role?
You should be fluent in SQL fundamentals—joins, aggregations, window functions, CTEs, NULL behaviour, and the difference between WHERE and HAVING—along with performance-aware query design. In statistics, master hypothesis testing, confidence intervals, power, bias versus variance, and common pitfalls in A/B testing and metric validity. Analytical skills include metric design, segmentation, funnel analysis, and root-cause diagnosis. Practical Python for data manipulation, clear code and algorithmic complexity intuition are useful. For senior roles, add measurement platforms, data pipelines, causal inference principles, and communicating tradeoffs to product and engineering partners.
What standout tips and common pitfalls should I know for Meta interviews?
Standout performance combines rigorous answers with business context: always state assumptions, define the metric you would optimize, and conclude with clear product recommendations. Verbally outline your plan before coding or analysis and validate edge cases and data limitations. Use concise STAR stories that quantify impact. Common pitfalls include failing to tie analysis back to user or business outcomes, ignoring confounders in experiments, overengineering solutions when a simple metric change suffices, and poor communication under time pressure. Practicing paced mock interviews and seeking targeted feedback on clarity and tradeoff discussion will mitigate these risks.

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