Meta Analytics & Experimentation Interview Questions
Practice 1,159 real Meta interview questions for 2026. Covers top categories — Coding & Algorithms, Analytics & Experimentation, Data Manipulation (SQL/Python), Behavioral & Leadership, and System Design — across Software Engineer, Data Scientist, Machine Learning Engineer, Data Engineer, and Product Manager roles. Real questions from actual interviews with detailed solutions. Expect a software-engineering-heavy loop: timed algorithmic coding (trees, arrays, graph/maze problems, delimiter/CSV parsing), system-design prompts like leaderboards, flight search and online-judge architectures, and an increasingly common AI-assisted coding round that mirrors real workflows. Data Scientist rounds emphasize product analytics and experimentation—designing tests, diagnosing spend drops and bots, evaluating unconnected content, and writing SQL for multi-account, seller, and vehicle metrics. Machine Learning Engineer questions skew toward recommender and ranking work (place and friend recommendation, sparse-matrix ops, linear-regression derivations, newsfeed dislike models). Data Engineers focus on data modeling, ETL, capacity calculations, reservations/utilization queries, and production SQL/Python tasks. For interview preparation, prioritize timed coding practice, system-design templates, rigorous SQL drills (joins/CTEs/aggregation), clear A/B-testing frameworks, and concise STAR behavioral stories tied to measurable impact.
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Explain a recent project and measured impact
Behavioral & Leadership: High-Impact Project Deep Dive You are interviewing for a software engineering role. Provide a concise, metrics-driven walkthr...
Design a scalable banking system
System Design: Core Banking Platform Problem Design a banking system that supports: - Account creation - Balance inquiry - Deposit and withdrawal - At...
Design tables for event-driven metrics
Design a Relational Schema for Consumer-App Event Analytics Context and Assumptions You are designing the event store for a high-volume consumer app. ...
Design input validation and error handling
Design Task: API, Validation, and Error Handling for a Top-K Frequency Service Context Design a production-grade service that, given an array of eleme...
Design a scalable dimensional model
Design a Dimensional Model for Transactional Analytics (Concrete Example Included) You are building a star-schema in a cloud data warehouse for near r...
Find shortest path and compare BFS vs DFS
Given an unweighted graph (directed or undirected), explain how to find the shortest path between two nodes without writing code. Describe the algorit...
Design a bank system with transfers
Single-Process BankSystem: APIs, Data Model, Algorithms, and Edge Cases Context and Assumptions You are asked to design and implement a single-process...
Derive max distinct frequencies for n items
Maximum Number of Distinct Frequency Counts in an Array Context You are given an array of length n ≥ 1 whose elements are arbitrary integers (values m...
Design an online auction platform
System Design: Real-Time English Auction Platform Goal Design an online auction platform that supports English-style auctions with: - Reserve price - ...
Implement a Streaming VMStat Alert
This question evaluates streaming data processing skills, sliding-window counting algorithms, and efficient online state management for metric monitor...
Design a newsfeed dislike model
This question evaluates a candidate's ability to design and operationalize a machine learning model that predicts the probability of a user disliking ...
Solve delimiter and CSV tasks
This question evaluates skills in string parsing and bracket balancing, CSV/file parsing and joining, computation of derived values, and sorting, emph...
Count unconnected posts and reactions
You are analyzing a newly launched feed feature intended to improve engagement by showing more unconnected content. Assume the following tables: - pos...
Dog-Walking Marketplace & Architecture
Design a Dog-Walking Marketplace App Design a two-sided marketplace that connects dog owners who need walks with vetted dog walkers who provide them. ...
Children’s Bookshelf Product Design
Product Design Prompt: Children's Bookshelf Design a primarily physical bookshelf for children to use at home, with optional lightweight digital suppo...
Implement tree column grouping and minimal parentheses fixes
Part A — Binary tree column grouping: Given the root of a binary tree, group node values by their vertical columns from leftmost to rightmost using x-...
How would you evaluate upranking Shop ads?
Meta is considering upranking ads that send users to an in-app Shop experience (for example, Facebook/Instagram Shops) relative to ads that send users...
Solve array merge and tree flattening problems
Solve array merge and tree flattening problems 1) Given two sorted arrays, merge them into a single sorted array. Provide both an in-place approach (w...
Evaluate and prioritize Facebook Groups
This question evaluates product analytics, experimentation design, causal inference, KPI hierarchy and metric-definition skills, and quantitative prio...
Design experiment for fake accounts impact
Experiment Design: Removing Detected Fake Accounts and Measuring Causal Impact Context: You are designing an end-to-end experiment on a large, interac...