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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k Questions 570 Companies10.05.2026
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
Meta logo
Meta
Medium
Data Engineer

Solve library SQL and Python tasks

You are given a library domain. Assume these tables: - books(book_id, author_id, title) - authors(author_id, name) - copies(copy_id, book_id, conditio...

Data Manipulation (SQL/Python)
1
2
16 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Success of B2C Chat App with Key Metrics

Evaluate Success of a B2C Chat App with Key Metrics A data scientist is asked to define how to evaluate the overall success of a business-to-consumer ...

Analytics & Experimentation
7
0
41 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement list, form, and API rendering with pitfalls

Take-home: Build a Small Frontend App (List + Form + API + A11y) Goal Implement a simple web app that demonstrates core frontend skills: rendering fro...

Software Engineering Fundamentals
10
0
73 people solved
Aug 12, 2025
Meta logo
Meta
Medium
Software Engineer

Design Ticket Booking Auto Release

Design Ticket Booking Auto Release System Design: Auto-expiring Ticket Reservations Problem Design a ticket-booking system where a reserved ticket aut...

System Design
13
0
54 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Data Scientist

Determine Probability of Video Selection and Impact Evaluation

Determine Probability of Video Selection and Impact Evaluation Video Recommendation Push: Selection Probabilities, Complements, and Design Choices Sce...

Statistics & Math
4
0
41 people solved
Aug 4, 2025
Meta logo
Meta
Easy
Data Scientist

Describe resolving conflict and welcoming others

Answer the following behavioral questions with specific examples: 1. How do you make other people feel welcome or included on a team? - Especially ...

Behavioral & Leadership
3
0
43 people solved
Nov 16, 2025
Capital One logo
Capital One
Hard
Data Scientist

Diagnose and fix a flight-delay modeling setup

Flight Delay Modeling: Binary Target, Features, and Diagnostics You are modeling the probability that a flight arrives with a delay greater than 15 mi...

Statistics & MathRegression & Statistical ModelingData Cleaning & Wrangling
15
0
129 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Answer product, collaboration, and prioritization scenarios

Behavioral / Leadership prompts Answer the following (you can assume a 35–40 minute behavioral interview): 1. Intro (5 minutes): Walk through your bac...

Behavioral & Leadership
4
0
56 people solved
Oct 14, 2025
Meta logo
Meta
Easy
Data Scientist

Determine Probability of Friend Request Being Fake

Determine Probability of Friend Request Being Fake Scenario You operate a platform where 95% of accounts are real and 5% are fake. Fake accounts send ...

Statistics & MathProbabilityBayesian Statistics
25
1
110 people solved
Aug 4, 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
Uber logo
Uber
Medium
Data Scientist

Formulate OR model to reduce driver backtracking

Define and reduce driver ‘backtracking’ in a marketplace. First, define a quantitative backtracking metric B per driver-hour from GPS and assignment l...

Statistics & MathGeo & Delivery SystemsBusiness Case Analysis
6
0
100 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

How would you evaluate adding video ads?

You are a data scientist for a free-to-play mobile game. The product team wants to introduce video ads (e.g., rewarded videos and/or interstitial vide...

Analytics & Experimentation
6
0
77 people solved
Nov 4, 2025
Easy
Data Scientist Locked

How would you measure and experiment on harmful content?

This question evaluates a data scientist's competency in measuring and experimenting on harmful user-generated content, focusing on severity quantific...

Analytics & Experimentation
3
0
24 people solved
Feb 17, 2026
Capital One logo
Capital One
Easy
Data Scientist

Compare average profit across mix scenarios

Burger Profit Mix — Scenario A vs. Scenario B Context: You sell two burger types (Regular and Vegan). In Scenario A, you sell only Regular. In Scenari...

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

Diagnose a watch-time drop and design experiments

This question evaluates a data scientist's competency in experimental design, causal inference, metric selection and definition, segmentation, and sta...

Analytics & Experimentation
7
0
52 people solved
Oct 13, 2025
Visa logo
Visa
Medium
Product Manager

How do you build a roadmap?

You are interviewing for a Product Manager role at Visa. The interviewer asks: How do you create and manage a product roadmap? Describe the inputs you...

Product / Decision Making
4
0
42 people solved
Oct 15, 2024
Microsoft logo
Microsoft
Hard
Software EngineerSenior+ Locked

Choose lock granularity for concurrent storage

This question evaluates understanding of concurrency control and lock-granularity trade-offs in concurrent storage components, including coarse-graine...

Software Engineering FundamentalsConcurrency
7
0
82 people solved
Jan 22, 2026
Medium
Data Scientist

Compare LLN and CLT with heavy tails

Explain the Law of Large Numbers vs the Central Limit Theorem, including their assumptions and convergence guarantees. Construct a concrete counterexa...

Statistics & Math
8
0
58 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate leadership with STAR examples

Demonstrate leadership with STAR examples Behavioral (STAR) Prompts for a Software Engineer Onsite Context You are preparing for a Software Engineer o...

Behavioral & Leadership
7
0
56 people solved
Jul 31, 2025
Amazon logo
Amazon
Medium
Software Engineer

Reflect on self, goals, learning, competitions

Prepare structured behavioral answers for these interview questions: 1. Give three words that accurately describe you as a professional, and illustrat...

Behavioral & Leadership
6
0
44 people solved
May 28, 2025
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