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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k 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
Google logo
Google
Hard
Product Manager

Project Leadership Deep Dive

Behavioral PM Onsite: End-to-End Project Leadership Deep Dive Choose one high-impact project you are proud of and walk through it end to end. Then add...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
16
0
115 people solved
Jul 4, 2025
Amazon logo
Amazon
Hard
Applied Scientist

Deep-dive your GenAI project architecture

Deep-dive your GenAI project architecture GenAI System Deep-Dive: End-to-End Design and Scale Strategy Provide a structured walkthrough of a productio...

ML System Design
7
0
94 people solved
Jul 17, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer

Explain Transformer, GPT vs BERT, and PR metrics

Answer the following conceptual questions: 1. Transformer architecture - Describe the main components of a Transformer block and what each part doe...

Software Engineering FundamentalsTransformers & AttentionModel Evaluation
6
0
74 people solved
Dec 15, 2025
Citadel logo
Citadel
Medium
Data Scientist

Introduce your background and motivations

Behavioral Prompt — Introduce Yourself (Data Scientist) Context You are interviewing for a Data Scientist role. Prepare a concise 2–3 minute introduct...

Behavioral & Leadership
7
0
58 people solved
Aug 13, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Design real-time exchange data sync system

Design real-time exchange data sync system System Design: Real-Time Multi-Exchange Stock Data Ingestion and Live Web Page Context You are asked to des...

System DesignTrading SystemsData Ingestion & CDC
6
0
124 people solved
Jul 26, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a streaming median structure

Design a streaming median structure Design a data structure for a number stream that supports: add(num: int) in O(log n) time and median() -> float in...

Coding & Algorithms
3
0
52 people solved
Aug 7, 2025
Stripe logo
Stripe
Medium
Data Scientist

Write SQL to detect recurring non-subscription users

You have two tables: merchant and transaction. Assume 'today' is 2025-09-01. Schema: merchant(merchant_id INT PK, merchant_name TEXT, country TEXT, cr...

Data Manipulation (SQL/Python)
1
0
25 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Behavioral & Execution Scenarios

Product Manager Phone Screen: Behavioral and Execution Scenarios Provide concrete, role-relevant examples for each situation below. Focus on actions, ...

Behavioral & LeadershipOwnership & ExecutionPrioritization & Tradeoffs
15
0
92 people solved
Jul 4, 2025
Citadel logo
Citadel
Hard
Data Scientist Locked

Solve Classic Probability Questions

This set evaluates probabilistic reasoning and expectation computation across topics such as sequential conditional survival, convolution of continuou...

Statistics & MathProbabilityPuzzles & Brainteasers
27
0
208 people solved
Feb 21, 2026
PayPal logo
PayPal
Medium
Machine Learning Engineer

Search a word in a grid

Given a 2D grid of characters and a target word, determine if the word can be traced by moving up, down, left, or right, using each cell at most once....

Coding & Algorithms
5
0
61 people solved
Sep 6, 2025
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Add two integer strings using digit-adder

This question evaluates proficiency in string-based arithmetic, digit-wise addition, carry propagation, and management of arbitrarily large non-negati...

Coding & Algorithms
10
0
89 people solved
Jan 6, 2026
SoFi logo
SoFi
Medium
Software Engineer

Demonstrate project impact and teach something

In a hiring-manager or behavioral interview: 1. Pick one recent project and explain: - the problem and why it mattered, - your role and scope, ...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
16
0
110 people solved
Feb 4, 2026
Google logo
Google
Hard
Data Scientist

Diagnose YouTube Usage Decline: Key Metrics and Segmentation

Diagnose YouTube Usage Decline: Key Metrics and Segmentation YouTube observes a sudden decline in daily active users and total watch time across the p...

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
81
0
125 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Easy
Data Scientist

Compute P(Bag B | red) via Bayes

Bayes' Rule: Posterior Probability of the Chosen Bag Setup - There are three bags containing red (r) and green (g) balls: - Bag A: 4 r, 6 g (10 tota...

Statistics & Math
11
0
79 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Map Random Tickets to Population-Weighted Cities

Problem Cities have positive population weights. Convert deterministic random tickets into city selections so that drawing a uniformly random ticket f...

Coding & Algorithms
1
0
16 people solved
Jan 11, 2026
Bitkernel logo
Bitkernel
Medium
Software Engineer

Detect impossible binary search comparison sequence

Consider binary search on a sorted array of numeric keys. The following options list possible sequences of key values that the algorithm might compare...

Software Engineering Fundamentals
5
0
43 people solved
Oct 24, 2025
Meta logo
Meta
Medium
Data Engineer

Compute capacities after site closures

You are given a nested dictionary redistribution where redistribution[closed_site][dest_site] equals the additional capacity required at dest_site if ...

Coding & Algorithms
7
0
80 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Compute 95th-percentile call concurrency

Given N call sessions as half-open intervals [start, end) in UNIX seconds, design an algorithm to compute the 95th percentile of per-minute concurrent...

Coding & Algorithms
5
0
55 people solved
Oct 13, 2025
Oracle logo
Oracle
Easy
Software Engineer Locked

Find the Minimum Jumps to Reach the Last Index

Find the minimum number of forward jumps needed to reach the last array index when each value limits the next jump length. The question defines reacha...

Coding & Algorithms
1
0
14 people solved
May 24, 2026
Meta logo
Meta
Medium
Data Scientist

Explain Type I vs. Type II Errors in A/B Testing

Explain Type I vs. Type II Errors in A/B Testing A/B Testing Errors and Estimation Under Skewed Metrics Context You are analyzing an A/B experiment fo...

Statistics & Math
21
0
70 people solved
Aug 4, 2025
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