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
Medium
Software Engineer LockedImplement Dependency-Aware To-Do List
This question evaluates the ability to design in-memory data structures and algorithms for representing tasks with directed dependencies, manage state...
Coding & Algorithms
0
0
6 people solved
May 29, 2026
Medium
Machine Learning EngineerSenior+ LockedExplain LLM training, RL, and evaluation
This question evaluates understanding of the full large language model lifecycle and associated competencies, including pre-training, supervised fine-...
Machine Learning
7
0
101 people solved
Dec 25, 2025
Medium
Software EngineerDescribe leadership challenges and managing a difficult report
Answer the following behavioral questions with specific examples: 1. In a project you led, what was the most challenging part and why? 2. Tell me abou...
Behavioral & Leadership
14
0
97 people solved
Dec 25, 2025
Medium
Software EngineerExplain HTTP methods and your usage
Explain HTTP methods and your usage HTTP Methods, Idempotency, Safety, and Practical Use Context You design and consume RESTful APIs for high-throughp...
System Design
16
0
116 people solved
Jul 26, 2025
Hard
Software EngineerAnswer technical-challenge and motivation questions
Answer the following behavioral interview questions: 1) Describe the most technically challenging problem you have solved. What made it hard, what did...
Behavioral & Leadership
10
0
113 people solved
Feb 7, 2026
Medium
Data EngineerDiagnose data quality and pipeline performance issues
Diagnose data quality and pipeline performance issues Scenario You are interviewing for a Data Solutions Architect role. A customer is using a cloud d...
Behavioral & Leadership
16
0
143 people solved
Jul 25, 2025
Easy
Data Scientist LockedHow do you derive CDF from a PDF?
This question evaluates understanding of the relationship between a probability density function and its cumulative distribution function, the formal ...
Statistics & Math
12
0
141 people solved
Feb 6, 2026
Medium
Software EngineerDesign an encrypted key-value store with login
Prompt Design a small key–value store that supports user login and ensures values are encrypted at rest using a user-provided password. You may assume...
Software Engineering Fundamentals
5
0
68 people solved
Oct 4, 2025
Medium
Software EngineerDesign a Multi-Agent Chat Backend
Design the backend for an LLM-powered chat product used by customers in a financial-technology setting. The interviewer will show a simple demo of a c...
System Design
5
0
52 people solved
Feb 6, 2026
Medium
Software EngineerSolve peak element and unique word abbreviation
You are given two independent coding problems to solve. 1) Peak element in an array (binary search) - Input: an integer array nums of length n >= 1. -...
Coding & Algorithms
2
0
41 people solved
Feb 6, 2026
Medium
Software EngineerCompare RDBMS vs NoSQL and containers
Answer the following engineering fundamentals questions: 1) Compare RDBMS and NoSQL databases: key trade-offs (schema, transactions/ACID, consistency,...
Software Engineering Fundamentals
2
0
41 people solved
Feb 6, 2026
Medium
Machine Learning EngineerExplain Vision Encoders and LLM Bottlenecks
Answer the following machine learning system fundamentals questions: 1. What is a vision encoder, and what role does it play in a computer vision or m...
Machine Learning
8
0
87 people solved
Nov 11, 2025
Medium
Data Analyst LockedFind Payroll Bookings in the Latest Active Month by Country
Practice PostgreSQL date logic by finding the latest active payroll-booking month and aggregating amounts by headquarters country. The task tests prec...
Data Manipulation (SQL/Python)
3
0
22 people solved
May 28, 2026
Medium
Software Engineer LockedReverse Linked List Groups
This question evaluates linked list manipulation, pointer/reference management, in-place iterative algorithms, and the ability to enforce O(1) extra s...
Coding & Algorithms
1
0
12 people solved
May 28, 2026
Easy
Data ScientistCompute DAU and rolling MAU with zero days
You have two tables in PostgreSQL: Tables users - user_id (STRING / INT, PK) - signup_date (DATE) logins - user_id (STRING / INT, FK → users.user_id) ...
Data Manipulation (SQL/Python)
5
0
66 people solved
Nov 10, 2025
Medium
Data ScientistCompare Two Coin Proportions
You are given results from two independent coin-toss experiments: - Coin A was tossed 100 times and landed heads 40 times. - Coin B was tossed 1,000 t...
Statistics & Math
12
0
106 people solved
Mar 28, 2026
Hard
Data ScientistIdentify Booking Drivers
You are a Data Scientist at a peer-to-peer car-sharing marketplace. The team wants to understand which product, listing, host, renter, and market feat...
Analytics & Experimentation
4
0
37 people solved
Feb 5, 2026
Medium
Software EngineerDescribe Project and Collaboration Stories
Prepare behavioral interview answers for the following prompts: 1. Tell me about a project you found especially interesting. 2. Describe a story invol...
Behavioral & Leadership
8
0
113 people solved
Oct 1, 2025
Medium
Machine Learning EngineerExplain XGBoost's Overfitting Resistance
A single, unpruned decision tree can recursively partition the training set until its leaves describe individual training points, which makes it a hig...
Machine Learning
7
0
109 people solved
Mar 27, 2026
Hard
Data ScientistHow Does Removing Zeros Affect Sharpe?
Suppose a return series has 2n observations. Exactly n observations are 0, and the remaining n observations are non-zero returns x1, x2, ..., xn with ...
Statistics & Math
8
0
60 people solved
Mar 27, 2026