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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Software Engineer

Compute binary tree diameter

Compute binary tree diameter Given the root of a binary tree, compute the tree's diameter defined as the maximum number of edges on any path between t...

Coding & Algorithms
7
0
75 people solved
Aug 7, 2025
Google logo
Google
Medium
Data Scientist

Estimate b when features exceed samples

Consider the linear model y = Xb + ε with X ∈ R^{n×(m+1)} including an intercept. a) Derive the OLS estimator b̂ = (XᵀX)^{-1}Xᵀy, stating the rank con...

Machine LearningRegression & Statistical ModelingML Fundamentals
16
0
115 people solved
Oct 13, 2025
Point72 logo
Point72
Medium
Quantitative Researcher

Explain Transformer Encoder and Decoder Behavior

Answer the following Transformer fundamentals questions in a machine learning interview: 1. What are the main differences between a Transformer encode...

Machine Learning
9
0
81 people solved
Mar 6, 2026
Walmart Labs logo
Walmart Labs
Medium
Data Scientist

Assess Cultural Fit in Informal Hiring Conversations

Assess Cultural Fit in Informal Hiring Conversations Behavioral & Leadership — Informal Conversation Context Onsite conversation with a hiring manager...

Behavioral & Leadership
9
0
63 people solved
Aug 4, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist Locked

Find index with positive suffix sums

This question evaluates array manipulation and algorithmic problem-solving skills, focusing on reasoning about cumulative (suffix) sums and time-compl...

Coding & AlgorithmsArrays & Strings
6
1
115 people solved
Feb 19, 2026
Apple logo
Apple
Hard
Data Scientist

Compute optimal matrix-chain multiplication order

Matrix Chain Multiplication: Optimal Parenthesization and Analysis You are given five matrices to multiply: A1 (10×30), A2 (30×5), A3 (5×60), A4 (60×2...

Coding & Algorithms
9
0
91 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Software Engineer

Describe cross-team collaboration on past projects

In a behavioral interview with an engineering manager, you are asked to discuss your previous project experience, with a particular focus on cross-tea...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
10
0
92 people solved
Dec 8, 2025
Meta logo
Meta
Hard
Data Scientist

Resolve exclusion, learn fast, and manage conflict

Behavioral & Leadership Onsite — Cross-Team Inclusion, Fast Learning, Analytical Conflict Context You are a data scientist working cross-functionally ...

Behavioral & Leadership
7
0
64 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Product Manager

Amazon Leadership Principles Behavioral Scenarios

Question Amazon product manager onsite loop, behavioral round. Prepare concise STAR stories for the situations below. Interviewers each pick two or th...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
20
1
193 people solved
Jul 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate decision-making and collaboration behaviors

Behavioral & Leadership (Technical Screen) — CARL Format You are interviewing for a Software Engineer technical screen. Answer each prompt using the C...

Behavioral & Leadership
4
0
63 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Product Manager

Secretary Problem – Selecting the Most Valuable Painting

Optimal Stopping Prompt: Choosing a Painting from 100 Rooms You are invited to an island with 100 rooms, each containing one painting. You may enter t...

Product / Decision Making
14
0
56 people solved
Jul 4, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Stand by a Disputed Technical Judgment

Prepare an example of defending a disputed technical judgment with evidence while actively testing your own assumptions. Explain respectful dissent, d...

Behavioral & LeadershipLeadership & InfluenceAmbiguity & Decision Making
8
0
115 people solved
Jul 15, 2026
Meta logo
Meta
Medium
Data Scientist

Resolve Poor Team Collaboration: Identify Issues, Implement Solutions

Resolve Poor Team Collaboration: Identify Issues, Implement Solutions Behavioral & Leadership Interview (Data Scientist) Scenario You are interviewing...

Behavioral & Leadership
7
0
48 people solved
Aug 4, 2025
Goldman Sachs logo
Goldman Sachs
Medium
Product Manager

Leading a Distributed Cross-Divisional Team

Behavioral Prompt: Leading a Distributed Cross-Divisional Team You are a Product Manager leading a cross-functional team distributed across multiple d...

Behavioral & Leadership
11
0
65 people solved
Jul 4, 2025
Amazon logo
Amazon
Medium
Product Manager

Cloud Connection Issue Triage

Incident Triage Prompt: Customer-Reported Cloud Connection Issue You are the on-call Product Manager partnering with Support, SRE, and Engineering dur...

Product / Decision Making
20
0
61 people solved
Jul 4, 2025
Roblox logo
Roblox
Hard
Data Scientist

Apply Bayes' rule to compute posterior

A binary event \(A\) (e.g., “user is a payer” or “patient has a disease”) has prior probability \(P(A)\). You observe evidence \(B\) (e.g., a model pr...

Statistics & MathProbabilityBayesian Statistics
8
0
110 people solved
Nov 24, 2025
Meta logo
Meta
Medium
Data Scientist

Solve Data-Structure Problems in Python Interview Round

Scenario Interview coding round focusing on simple data-structure problems in Python. Question Given an integer, rearrange its digits (considering onl...

Coding & Algorithms
6
0
67 people solved
Aug 4, 2025
Google logo
Google
Medium
Data Scientist

Implement percentage RMSE and bootstrap its CI

Given a CSV with columns [country, actual_revenue, predicted_revenue], define percentage RMSE as pRMSE = sqrt(mean_i((pred_i/actual_i − 1)^2)). a) Imp...

Coding & Algorithms
12
0
90 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Estimate CTR lift with binomial tests and errors

A/B Test Inference, Peeking, and Multiple Comparisons You run a two-arm A/B test of click-through rate (CTR). - Control: n_c = 10,000,000 impressions,...

Statistics & MathExperiment Design (A/B Testing)Hypothesis Testing
6
0
102 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Machine Learning EngineerSenior+ Locked

Find two numbers summing to target without hashmap

This question evaluates array manipulation, index-tracking, and algorithmic problem-solving skills, with emphasis on time and space complexity trade-o...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting
5
0
85 people solved
Jan 22, 2026
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