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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Maximize events attended given date ranges

This question evaluates understanding of interval scheduling and efficient algorithm design for allocating limited time-based resources, including con...

Coding & AlgorithmsIntervals & SchedulingGreedy
11
0
141 people solved
Mar 1, 2026
Lyft logo
Lyft
Medium
Data Scientist

Assess Cultural Fit Through Behavioral Interview Questions

Assess Cultural Fit Through Behavioral Interview Questions Onsite Behavioral & Leadership Interview — Data Scientist Scenario - 1-on-1 conversation wi...

Behavioral & LeadershipLeadership & InfluenceFailure & Learning
27
0
107 people solved
Aug 4, 2025
Okta logo
Okta
Medium
Software EngineerSenior+ Locked

Design a Metrics Storage Platform

This question evaluates system-design and distributed-systems skills for time-series metrics storage, focusing on data modeling for counters, gauges, ...

System Design
15
0
114 people solved
Mar 30, 2026
C3 AI logo
C3 AI
Medium
Data Scientist Locked

Design Perishable Grocery Replenishment Ranges

Design an ML replenishment system for perishable groceries. Connect censored demand, probabilistic forecasts, newsvendor costs, shelf life, order cons...

ML System Design
1
0
19 people solved
Aug 9, 2026
Trexquant logo
Trexquant
Medium
Software Engineer

Maintain median of a data stream

Design a data structure that supports: - addNum(int x): Add an integer from a stream. - findMedian(): Return the median of all inserted numbers so far...

Coding & Algorithms
16
0
124 people solved
Sep 1, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Build a Bayes classifier for reviewer types

This question evaluates Bayesian inference skills, including posterior updating under conditional independence, likelihood modeling for categorical ob...

Machine Learning
3
0
33 people solved
Oct 13, 2025
Yelp logo
Yelp
Medium
Product Manager

Detecting unannounced restaurant closures on Yelp's reservations product

You are the product manager for the restaurant reservations product on Yelp. During the COVID-19 pandemic, many restaurants are shutting down without ...

Product Design & StrategyProduct Design & Improvement
1
0
13 people solved
Apr 19, 2025
Amazon logo
Amazon
Medium
Software Engineer

Count regions with DFS

Given an m x n grid of 0s and 1s, count the number of connected regions consisting of 1s using depth-first search (4-directional adjacency). Return th...

Coding & Algorithms
12
0
88 people solved
Sep 6, 2025
Amazon logo
Amazon
Easy
Data Scientist Locked

Answer core probability and inference questions

This question evaluates understanding of statistical inference and probability fundamentals, covering the Central Limit Theorem, p-values, Type I and ...

Statistics & Math
9
0
91 people solved
Oct 11, 2025
Meta logo
Meta
Medium
Data Scientist

Find the most-used app

You work on Oculus app engagement analytics. Tables user_activity - user_id (BIGINT) - date (DATE) — day of activity (assume UTC unless otherwise spec...

Data Manipulation (SQL/Python)Metrics & KPIsSQL
8
0
56 people solved
Aug 17, 2025
Meta logo
Meta
Hard
Software Engineer

Design place-of-interest ML system

Design place-of-interest ML system Design a POI (Places of Interest) Recommendation System Context Design a global POI recommender for a mobile maps/f...

ML System DesignRecommendation SystemsPersonalization
17
1
158 people solved
Jul 17, 2025
Amazon logo
Amazon
Medium
Product Manager

Architect Alexa voice control for Peloton equipment: APIs and components

Design the system that lets a rider control a Peloton exercise machine by voice through Alexa. Specify the main APIs, sketch the architecture, and exp...

System DesignTechnical Tradeoffs for PMsAPI Design
0
0
6 people solved
Nov 7, 2024
Meta logo
Meta
Medium
Software Engineer

Implement string dedup and mirror tree traversal

- String cleanup with group deletions (LeetCode-inspired): Given a string s consisting of lowercase letters, repeatedly delete any maximal contiguous ...

Coding & Algorithms
3
0
47 people solved
Sep 6, 2025
Capital One logo
Capital One
Easy
Data Scientist

Calculate profit and break-even across pricing models

Unit Economics and Break-even Analysis for a Cloud-Storage Startup You are analyzing a cloud-storage startup that currently charges unit-based pricing...

Statistics & MathBusiness Case AnalysisGrowth & Monetization
11
0
121 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

Handle conflict and missed delivery deadlines

Answer behavioral questions covering: 1. Conflict: Describe a time you had significant conflict with a teammate/stakeholder. What caused it, what did ...

Behavioral & Leadership
9
0
83 people solved
Feb 11, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Simulate a Throttled Function Wrapper That Keeps Only the Latest Pending Call

A throttle wrapper limits how often a function actually runs. You are given the cooldown length t and the times at which the wrapped function is calle...

Coding & AlgorithmsSimulation & State Machines
1
0
14 people solved
Apr 15, 2026
TikTok logo
TikTok
Hard
Data Scientist

Explain SHAP vs VIF under collinearity

High Collinearity in Binary Classification: VIF, SHAP, and Interpretation Strategy You are modeling a binary outcome Y. Two numeric features A and B a...

Machine LearningModel InterpretabilityRegression & Statistical Modeling
8
0
169 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist Locked

Test if one value comes from N(μ,σ²)

Formulate a two-sided test of whether a single observed value comes from a normal distribution with known mean and standard deviation, giving the test...

Statistics & Math
9
0
85 people solved
Oct 13, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Identify incorrect HTTP status code description

Which of the following descriptions about HTTP status codes is incorrect? Options: - A. 100 means the client should continue sending the request. - B....

Software Engineering Fundamentals
8
0
65 people solved
Oct 24, 2025
DoorDash logo
DoorDash
Hard
Data Scientist

Diagnose Causes of High Out-of-Stock Rate in Groceries

Diagnose Causes of High Out-of-Stock Rate in Groceries Product and Operations Case: Grocery OOS, Delivery Radius, and Free Delivery Context You are a ...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
15
0
145 people solved
Aug 4, 2025
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