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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

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PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

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

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
boba.tea.vibes

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

Andy testimonial
AndySWE-II, Google

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

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

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

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

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

boba.tea.vibes testimonial
boba.tea.vibes

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

Andy testimonial
AndySWE-II, Google

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

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

Showing 20 results
Amazon logo
Amazon
Medium
Data Scientist

Compute CIs, power, and multiple testing

A/B Testing Stats: Confidence Intervals, Power, Multiple Testing, and Clustering Context: You are planning an A/B experiment on a Bernoulli outcome (c...

Statistics & Math
7
0
74 people solved
Oct 13, 2025
Roblox logo
Roblox
Medium
Data Scientist

Explain an ML project end-to-end with tradeoffs

Pick one of your production ML projects and walk through it end-to-end. Be specific: 1) Problem framing (prediction vs causal decisioning), target def...

Machine Learning
11
0
82 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Validate in-post restaurant recommendations via experiment

This question evaluates a data scientist's competency in experimental design for recommendation systems, including defining viewer- and creator-level ...

Analytics & Experimentation
1
0
26 people solved
Oct 13, 2025
Uber logo
Uber
Hard
Data Scientist

Diagnose and reduce first-action drop-offs

Funnel Drop‑Off: Instrumentation, Incentives, Fairness, and Ownership Context You lead a program where candidates must: (1) submit paperwork, then (2)...

Behavioral & Leadership
3
0
63 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Design a clustered notification experiment with guardrails

You work on a mobile travel app (think TripAdvisor-like) that will test a new push-notification policy recommending nearby attractions. Design a rigor...

Analytics & Experimentation
3
0
42 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Hard
Data Scientist Locked

Estimate Super Bowl QR-driven registrations

This question evaluates quantitative estimation, probabilistic modeling, sensitivity analysis, and experiment design skills for a data scientist, incl...

Analytics & Experimentation
4
0
45 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compute daily post success rate for last 7 days

You have a table composer(user_id INT, event STRING CHECK(event IN ('enter','post','cancel')), event_date DATE). Compute the post success rate for eac...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
8
1
52 people solved
Oct 13, 2025
Roblox logo
Roblox
Easy
Data Scientist Locked

Compute A/B test sample size and Bayes posterior

This question evaluates understanding of statistical power and sample size calculation for a two-sided A/B z-test as well as basic Bayesian posterior ...

Statistics & Math
10
0
73 people solved
Oct 3, 2025
Meta logo
Meta
Medium
Product Analyst Locked

How to evaluate emoji reactions?

This question evaluates product analytics and experimentation competencies for a Product Analyst role in the Analytics & Experimentation domain, focus...

Analytics & Experimentation
2
0
40 people solved
Oct 20, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Estimate first selection round with/without replacement

This question evaluates understanding of probability and expectation concepts, specifically sampling with and without replacement, per-round success p...

Statistics & Math
2
0
45 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

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...

Analytics & Experimentation
3
0
49 people solved
Oct 16, 2025
Chime logo
Chime
Medium
Product Manager

Describe a 0-to-1 project you led

Tell me about a product or growth initiative that you personally led from 0 to 1. Explain the customer problem, why the opportunity mattered, how you ...

Behavioral & LeadershipProduct SenseLeadership & Influence
11
0
120 people solved
Feb 24, 2025
Meta logo
Meta
Hard
Data Scientist Locked

How to design Shop ad ranking

This question evaluates a candidate's expertise in machine learning and data science for ad ranking systems, including objective formulation and trade...

Machine Learning
3
0
34 people solved
Oct 26, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Choose KPIs for short-video recommendations

This question evaluates a data scientist's ability to define precise product metrics, set guardrails, design and power A/B tests, and apply weighted d...

Analytics & Experimentation
3
0
28 people solved
Oct 13, 2025
CVS Health logo
CVS Health
Medium
Data Scientist

Test payment-accuracy lift with p-value and power

AB Test of Payment Accuracy (Two Proportions) Assume transactions in the two periods are independent and large enough for normal approximations. Defin...

Statistics & Math
5
0
64 people solved
Oct 13, 2025
PayPal logo
PayPal
Hard
Data Scientist Locked

Build a real-time ATO model

This question evaluates a candidate's competency in designing low-latency, production-grade real-time machine learning systems for account-takeover de...

Machine Learning
7
0
67 people solved
Oct 13, 2025
Thumbtack logo
Thumbtack
Medium
Data Scientist

Write complex joins and window functions

You are given a simplified Thumbtack-like marketplace schema in PostgreSQL. Assume UTC timestamps and weeks start on Monday. Treat "today" as 2025-09-...

Data Manipulation (SQL/Python)
0
0
14 people solved
Oct 13, 2025
Meta logo
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 & MathBayesian StatisticsExperiment Analysis & Readout
10
0
142 people solved
Oct 13, 2025
Capital One logo
Capital One
Hard
Data Scientist Locked

Design an experiment for delay drivers

This question evaluates experimental design and causal inference skills — including randomized and quasi-experimental identification, power and sample...

Analytics & Experimentation
3
0
26 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Measure fake-news interventions under network interference

Experiment Design Under Interference: Warning Label for Suspected Fake-News Reshares Context You are testing a pre-reshare warning label for links sus...

Analytics & Experimentation
6
0
55 people solved
Oct 13, 2025
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