Interview Questions
Practice the exact questions companies are asking right now.
Questions
10.0k
Companies
520
Updated
08.21.2026
10.0k Questions 520 Companies08.21.2026
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_
"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"
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
"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."
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
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
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."
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
"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."
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
"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."
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
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
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
Role
Hard
Machine Learning EngineerExplain Transformers, activations, and training optimization
Explain Transformers, activations, and training optimization Modern Deep Learning: Conceptual Questions (ML Engineer Take-home) You are preparing for ...
Machine Learning
2
0
56 people solved
Jul 29, 2025
Medium
Data ScientistSenior+How would you analyze retail volume drop?
Retail BTC volatility is high, but retail trading volume on Coinbase has decreased. Explain how you would investigate the issue with data and turn the...
Analytics & Experimentation
5
0
44 people solved
Mar 25, 2025
Medium
Data ScientistSenior+Compute 30-day power users and 7-day retention
Compute 30-day power users and 7-day retention You are interviewing for a Product/Risk Data Scientist role at a crypto exchange. Assume all timestamps...
Data Manipulation (SQL/Python)
6
0
67 people solved
Mar 25, 2025
Hard
Data Scientist LockedDesign 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
29 people solved
Jul 28, 2025
Easy
Data ScientistDerive eigenvalues and sum for inverse matrix
Derive eigenvalues and sum for inverse matrix Eigenvalues of an Inverse and Their Sum Context Let A be an invertible n×n matrix (over the real or comp...
Statistics & Math
7
0
53 people solved
Jul 28, 2025
Medium
Software EngineerDiscuss project experience and teamwork
Discuss project experience and teamwork Behavioral & Leadership: Project Experience and Teamwork (Software Engineer, Onsite) Context: Provide concise,...
Behavioral & Leadership
4
0
59 people solved
Jul 28, 2025
Medium
Software EngineerFind minimal time to serve customers
Find minimal time to serve customers You manage a bank with k tellers; teller i takes serviceTimes[i] minutes to serve one customer and works continuo...
Coding & Algorithms
5
0
91 people solved
Jul 28, 2025
Medium
Software EngineerDesign a Market Surveillance Platform
Design a customer-facing market surveillance platform for financial exchanges. Financial exchanges submit trading orders to the platform. An example o...
System Design
2
0
19 people solved
Dec 25, 2025
Medium
Software EngineerImplement cloud storage with quotas and compression
Problem Implement an in-memory cloud storage service that supports multiple users, per-user storage quotas, changing quotas with eviction, and file co...
Coding & Algorithms
23
0
218 people solved
Dec 25, 2025
Hard
Data ScientistDefine metrics for high-quality notifications
Define metrics for high-quality notifications Context You are a Data Scientist partnering with a product team at Facebook/Meta that owns push/in-app n...
Analytics & Experimentation
3
0
38 people solved
Jul 27, 2025
Medium
Software EngineerSolve constrained monster traversal
Solve constrained monster traversal You are given a directed graph with n rooms labeled 0..n-1; each room i contains a monster with health hp[i] ≥ 0. ...
Coding & Algorithms
7
0
118 people solved
Jul 27, 2025
Medium
Software EngineerDesign a Balloon Festival Simulator
Implement a class BalloonFestival with the following API and rules. Goal Track hot air balloons (yours and competitors), evolving wind fields, and bal...
Coding & Algorithms
33
0
376 people solved
Jul 27, 2025
Medium
Software EngineerDescribe a challenging resume project
Describe a challenging resume project Behavioral Deep-Dive: Project You’re Most Proud Of Provide a structured walkthrough of one project from your res...
Behavioral & Leadership
8
0
80 people solved
Jul 27, 2025
Medium
Software EngineerDesign a no-repeat top-frequency music player
Design and implement a music player that receives song lists from new users and returns songs to play in frequency order without repeating a song in t...
Coding & Algorithms
4
0
52 people solved
Mar 22, 2025
Medium
Software EngineerTell me about exceeding your responsibility
Answer these Amazon-style behavioral interview questions with concrete STAR stories: 1. Tell me about a time you went beyond your formal responsibilit...
Behavioral & Leadership
4
0
53 people solved
Mar 22, 2025
Easy
Software Engineer LockedSolve three classic coding problems
These tasks evaluate algorithmic problem-solving, data structure mastery, and implementation skills within the Coding & Algorithms domain, touching on...
Coding & Algorithms
4
0
38 people solved
Dec 24, 2025
Medium
Software EngineerProvide self introduction, achievements, automation challenges, code quality, mentoring
Provide self introduction, achievements, automation challenges, code quality, mentoring Technical Screen: Behavioral and Leadership — Software Enginee...
Behavioral & Leadership
5
0
38 people solved
Jul 26, 2025
Medium
Data ScientistEnsure model ethics and governance
Ensure model ethics and governance Ensuring Model Ethics Across Development and Deployment Context You are interviewing for a Data Scientist role in a...
Behavioral & Leadership
2
0
51 people solved
Jul 26, 2025
Medium
Data ScientistExplain PD model validation steps
Explain PD model validation steps Validate a Newly Developed Probability of Default (PD) Model Context Assume you have built a retail credit Probabili...
Machine Learning
9
0
183 people solved
Jul 26, 2025
Hard
Software EngineerDesign 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 Design
5
0
106 people solved
Jul 26, 2025