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.

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Increase posts receiving comments via experimentation
Increase the Share of Posts That Receive a Meaningful Comment You are a data scientist for a consumer social app with posts and comments. Your goal is...
Redesign an executive dashboard for C-suite
Redesign a Spaghetti Chart into an Executive Dashboard Context You are handed a single slide for the C‑suite that shows a spaghetti chart of regional ...
Derive and validate DID for staggered rollout
Causal Effect of a Staggered Adoption Policy Across EU Regions You cannot randomize. An intervention is rolled out at different dates across EU region...
Model session times and comments with exponential/Poisson
Session Duration Memoryless Assumption and Poisson Comment Counts Setup - We model user session end times with a constant hazard (memoryless) over tim...
Prove friends outperform unconnected; design metrics, observational analysis, and rollout experiment
Question You are given two event tables, info_stream_views (one row per viewer–post view, with viewer_id, post_id, relationship ∈ {friend, unconnected...
Describe Overcoming a Major Challenge in Your Career
Describe Overcoming a Major Challenge in Your Career This is a behavioral deep-dive for a new-grad data scientist role. The interviewer may ask severa...
Calculate Expected Day for First Selection in Sampling
Expected Day of First Selection in Daily Sampling There are 1,000 people. Each day, 10 distinct names are selected uniformly at random. Day counting s...
Design an experiment to evaluate a new ads algorithm
You are a Product Analytics/Data Science partner for an ads ranking/recommendation team. Facebook has shipped (or plans to ship) a new ad recommendati...
Evaluate AI-assisted ad creation
This question evaluates a candidate's competence in product analytics, causal inference, experimentation design, metric definition, and monitoring for...
Analyze spend and creation-source shifts
This question evaluates a data scientist's competency in SQL-based data manipulation, time-series aggregation, joins, and metric computation for analy...
Evaluate Product-Ranking Algorithm with Precision and Recall Metrics
Evaluate Product-Ranking Algorithm with Precision and Recall Metrics Scenario Instagram Shopping wants to improve its product‑ranking algorithm for th...
Compute probabilities for chatbot response quality
Context A chatbot response is considered good if it is both: - Helpful, and - Honest. You are told: - \(P(\text{Helpful}) = 0.8\) - \(P(\text{Honest})...
Evaluating and launching Instagram Stories
Evaluating and Launching Instagram Stories You are evaluating the rollout and impact of Stories, an ephemeral sharing format similar to Snapchat, acro...
Fake Accounts [AE]
Evaluates probability, classification metrics, and feature engineering for fake-account detection. Strong answers apply Bayes' rule with rate-weighted...
Analyze User Comment Distribution and Sampling Effects
Analyze User Comment Distribution and Sampling Effects You are analyzing daily comment counts per user. The individual user-level distribution is righ...
Propose an ads recommendation model for shop ads
You need to propose a modeling approach for recommending/ranking shop ads (i.e., which shop ads to show and in what order) for a marketplace app. Desc...
Design an A/B test for a new shop-ads algorithm
A new ranking/promotion algorithm will change which shop ads are shown (and their order). You are asked: “How do we know if this new algo is good?” De...
Compute ad revenue metrics by geography in SQL
You work on a marketplace app that shows shop ads. You are given the following tables. Assumptions - All timestamps are stored in UTC. - “Revenue” is ...
Build a model to infer home vs office vs public
You must infer whether a Facebook session’s network context is home, office, or public venue to inform Portal targeting. Constraints: IPs may be share...
Apply reinforcement learning to product decisions
This question evaluates expertise in reinforcement learning and sequential decision-making for product optimization, covering MDP formulation, contras...