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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
Meta logo
Meta
Medium
Data Scientist

Compute posterior fake probability using Bayes' rule

A platform runs an automated detector to flag fake accounts. - Prior probability an account is fake: \(P(F)=0.02\). - True positive rate (sensitivity)...

Statistics & Math
11
0
78 people solved
Oct 14, 2025
Airtable logo
Airtable
Easy
Data Scientist Locked

Diagnose metric anomalies and evaluate new algorithm

This question evaluates competency in analytics-driven incident investigation, experiment design, metric instrumentation, and product-metric interpret...

Analytics & Experimentation
5
0
53 people solved
Oct 14, 2025
Hard
Data Scientist Locked

Derive and regularize logistic regression

This question evaluates proficiency in logistic regression theory and regularization, GLM versus OLS assumptions, class imbalance handling and calibra...

Machine Learning
4
0
32 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Estimate bots and CI from DAU spike

This question evaluates proficiency in mixture modeling for anomaly detection, parametric and nonparametric inference for mean differences, handling o...

Statistics & MathProbabilitySampling & Estimation
9
1
105 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist Locked

Compute and interpret quantile loss vs RMSE

This question evaluates competency in probabilistic forecasting evaluation, including understanding of quantile (pinball) loss versus point-error metr...

Statistics & Math
10
0
77 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Dissect a failure and corrective actions

Describe a recent failure. Explain: a) root causes (your decisions vs. external factors) using a 5 Whys or fault-tree; b) early warning signals you mi...

Behavioral & Leadership
5
0
44 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist Locked

Assess 3.4M target and design experiments

This question evaluates skills in growth analytics, market sizing (TAM→SAM→SOM), funnel modeling, unit economics (CAC/LTV), capacity planning, and exp...

Analytics & Experimentation
4
0
39 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design hashtag recommender with cold start

This question evaluates expertise in recommender-system design, feature engineering, ranking and learning-to-rank models, cold-start strategies, evalu...

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

Design metrics resilient to data quality

Design a robust metric and compute it using only window functions (no JOINs) to show how data-quality issues change conclusions. Schema: payments_raw(...

Analytics & Experimentation
3
0
27 people solved
Oct 13, 2025
Medium
Data Scientist

Handle unprofessional, prescriptive interviewers

You are mid-interview on a time-boxed SQL screen where the interviewer forbids JOINs and insists on window functions only, interrupts with a personal ...

Behavioral & Leadership
3
0
27 people solved
Oct 13, 2025
Apple logo
Apple
Medium
Data Scientist Locked

Diagnose post-release conversion regression rigorously

This question evaluates a Data Scientist's skills in causal inference, experimental design, statistical power and variance-reduction techniques, ident...

Analytics & ExperimentationCausal InferenceMetric Diagnostics
16
0
119 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Handle novelty and residual effects

This question evaluates a data scientist's competency in experiment design and causal inference for online metrics under temporal dynamics, specifical...

Analytics & Experimentation
3
0
30 people solved
Oct 13, 2025
Roku logo
Roku
Medium
Data Scientist

Diagnose coffee-shop profit decline

You run a single-location coffee shop. In August 2025, profit dropped 18% vs July while transactions fell 4% and average check rose 2%. You have these...

Analytics & Experimentation
9
0
63 people solved
Oct 13, 2025
Etsy logo
Etsy
Hard
Data Scientist Locked

Run a clean A/B test for autocomplete

This question evaluates experimental-design and causal-inference competency for online A/B testing of ML-ranked autocomplete, covering metric formulat...

Analytics & Experimentation
4
0
32 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design a clustered A/B test with spillovers

This question evaluates a data scientist's understanding of cluster-randomized experiments with spillovers, covering causal inference under interferen...

Analytics & Experimentation
5
0
64 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Demonstrate calculated risk and deep-dive leadership

Describe one project where you took a calculated risk that was outside your formal responsibilities. Context: What was the business or research goal, ...

Behavioral & Leadership
4
0
56 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
41 people solved
Oct 13, 2025
Medium
Data Scientist Locked

Design anomaly detection and handle imbalanced logistic regression

This Machine Learning interview question evaluates a data scientist's competencies in supervised logistic regression modeling, class imbalance managem...

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

Explain motivations, customer ownership, mentoring, and culture fit

1) Why are you leaving your current company? Answer in <90 seconds, avoid negativity, and tie your reason to specific growth you seek (e.g., owning an...

Behavioral & Leadership
2
0
31 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Characterize metric distribution and quantiles

KPI Analysis: Per-Video Watch Time (seconds) You are evaluating a pilot dataset for the KPI "per‑video watch time" (in seconds). The dataset (n = 20) ...

Statistics & Math
2
0
42 people solved
Oct 13, 2025
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