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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
570
Updated
10.17.2026
12.2k Questions 570 Companies10.17.2026
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
Medium
Data Scientist

Decide goal under ambiguity

Choose the Primary Goal for a New Subscriber-Only Benefit You are the PM/data lead for a subscription product planning a new subscriber-only benefit. ...

Behavioral & Leadership
4
0
43 people solved
Oct 13, 2025
Hard
Data Scientist Locked

Decide launch with p=0.10 at alpha 0.05

This question evaluates a data scientist's competency in statistical inference and experiment decision-making, including frequentist hypothesis testin...

Statistics & Math
1
0
24 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design and justify unread-account pinning experiment

This question evaluates a data scientist's competency in experimental design, causal inference, metric definition, instrumentation, and analysis for p...

Analytics & Experimentation
2
0
28 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Estimate fake-account prevalence with capture-recapture

This question evaluates a data scientist's competency in capture–recapture estimation, estimation of population size with incomplete detections, stati...

Statistics & Math
4
0
34 people solved
Oct 13, 2025
HBO logo
HBO
Hard
Data Scientist Locked

Choose tests for rare-event A/B analysis

This question evaluates expertise in statistical experiment design for rare binary outcomes, covering hypothesis test selection for low-event-rate pro...

Statistics & Math
3
0
36 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Data Scientist Locked

Design and analyze email deliverability experiment

This question evaluates a data scientist's competency in experimental design, causal inference, sequential testing (frequentist and Bayesian), instrum...

Analytics & Experimentation
7
1
75 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Determine if users need a new feature

This question evaluates a data scientist's competency in product analytics, causal inference, experiment design, metric definition, instrumentation, a...

Analytics & Experimentation
2
0
34 people solved
Oct 11, 2025
Roblox logo
Roblox
Easy
Data Scientist Locked

Rank features using logistic regression coefficients

This question evaluates understanding of feature scaling, interpretation of logistic regression coefficients as feature importance, and awareness of h...

Machine Learning
11
0
79 people solved
Oct 3, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Define and estimate prevalence of unhealthy users

This question evaluates a data scientist's ability to operationalize an "unhealthy user" metric and compute its prevalence from session duration and d...

Analytics & Experimentation
4
0
43 people solved
Aug 17, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Test if social users are more engaged

This question evaluates a data scientist's competencies in observational analytics, engagement metric selection, cohort construction for overlapping b...

Analytics & Experimentation
2
0
31 people solved
Aug 17, 2025
Meta logo
Meta
Medium
Data Scientist

Determine Probability of Fourth Good Response After Three Successes

Determine Probability of Fourth Good Response After Three Successes Evaluating Good-Response Rates for Chatbot Outputs Context You are evaluating chat...

Statistics & Math
3
0
50 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Describe Overcoming Challenges in Machine Learning Projects

Describe Overcoming Challenges in Machine Learning Projects Microsoft Data Scientist Phone Screen — Behavioral Questions (Use STAR) Instructions Use t...

Behavioral & Leadership
5
0
61 people solved
Aug 4, 2025
CloudTrucks logo
CloudTrucks
Medium
Data Scientist

Determine North-Star Metric for CloudTrucks Driver Platform

Determine North-Star Metric for CloudTrucks Driver Platform Product Analytics Case: North-Star Metric and Booking Funnel (Driver Platform) Context You...

Analytics & Experimentation
1
0
25 people solved
Aug 4, 2025
Attentive logo
Attentive
Medium
Data Scientist

Apply Multiple Testing Corrections for Valid Results Analysis

Apply Multiple Testing Corrections for Valid Results Analysis Interpreting 30 Parallel A/B Tests With Mixed Results Context - You ran 30 independent w...

Analytics & Experimentation
81
0
195 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Data ScientistSenior+ Locked

Prove high-quality pixels improve ad performance

Prove high-quality pixels improve ad performance evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and...

Analytics & Experimentation
2
0
34 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Machine Learning Engineer

Describe learning from a post-interview bug

Describe learning from a post-interview bug Behavioral Prompt: Bug Discovered After a Remote Technical Screen Context You are in a remote technical sc...

Behavioral & Leadership
9
0
71 people solved
Jul 31, 2025
Meta logo
Meta
Hard
Data Scientist Locked

Design an A/B test for non-friend posts

Design an A/B test for non-friend posts evaluates metric design, causal reasoning, experiment setup, diagnostics, SQL/statistical checks, and recommen...

Analytics & Experimentation
2
0
32 people solved
Jul 28, 2025
Meta logo
Meta
Hard
Data Scientist

Determine Group Call Feature Need and Evaluation Methods

Determine Need and Evaluation Methods for Group Calling You are the product analyst for a messaging platform considering a group-calling feature. You ...

Analytics & Experimentation
96
0
275 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Product Manager

Apply GenAI to Business Messaging

Product Strategy Prompt: Apply GenAI to Enterprise Business Messaging Explain what generative AI is and how you would apply it to an enterprise busine...

Product Design & Strategy
4
0
80 people solved
Jul 1, 2025
Snapchat logo
Snapchat
Medium
Technical Program Manager

Design and evaluate Snap recommendations

You are interviewing for a Technical Program Manager, ML Platform role at Snap. Explain the key ML evaluation and experimentation concepts a TPM shoul...

Product Design & StrategyML System DesignExperiment Design (A/B Testing)
8
0
80 people solved
Jun 12, 2025
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