Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
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
Software Engineer LockedDesign a KV store with QPS API
This question evaluates a candidate's ability to design scalable, highly available key-value storage systems and to integrate real-time metrics report...
System Design
34
0
648 people solved
Feb 4, 2026
Medium
Software EngineerSolve two array and string problems
You will solve two independent coding tasks. Problem 1: Generate All Subsets of a Set You are given an integer array nums containing n distinct elemen...
Coding & Algorithms
15
0
179 people solved
Oct 16, 2025
Hard
Software EngineerDiscuss a Project You Are Proud Of and How You Work
Discuss a Project You Are Proud Of and How You Work Use one concrete project to answer the following questions. Keep your account truthful and make yo...
Behavioral & Leadership
4
0
33 people solved
Mar 29, 2026
Hard
Software Engineer LockedDesign several large-scale systems
This prompt evaluates expertise in large-scale system architecture and distributed systems, including competencies in API and storage design, scalabil...
System Design
31
0
217 people solved
Feb 12, 2026
Hard
Software Engineer LockedHow to prepare for AI-assisted coding interviews?
This question evaluates proficiency in integrating AI coding assistants and developer tooling with core software engineering competencies such as debu...
Software Engineering Fundamentals
54
0
497 people solved
Feb 12, 2026
Easy
Software Engineer LockedDesign a Top-K Ranking Service
This question evaluates a candidate's ability to design scalable, real-time Top-K ranking services, testing competencies in distributed systems, strea...
System Design
6
0
93 people solved
Mar 10, 2026
Medium
Data Engineer LockedDefine metrics and data model for product features
This question evaluates a candidate's product sense and data engineering competency, including defining core success metrics, designing dashboard visu...
System Design
17
0
145 people solved
Mar 1, 2026
Medium
Product Analyst LockedHow would you grow Meta products?
This question evaluates product growth analytics and experimentation skills, including metric definition, funnel decomposition, segmentation, hypothes...
Analytics & Experimentation
7
0
66 people solved
Mar 19, 2026
Hard
Machine Learning EngineerDiagnose Transformer training and inference bugs
Debugging a Transformer That Intermittently Throws Shape/Dtype Errors and Fails to Converge You inherit a Transformer-based sequence model (decoder-on...
Machine Learning
108
0
843 people solved
Aug 11, 2025
Hard
Machine Learning EngineerImplement compiler for custom language
Implement compiler for custom language Design and implement a simple compiler/interpreter Goal Design and implement a small compiler/interpreter for a...
System Design
49
0
405 people solved
Aug 4, 2025
Hard
Software EngineerSenior+Design a typeahead search service
Design a search autocomplete system for a large application. As a user types a prefix, the system should return relevant suggestions with low latency....
System Design
27
0
192 people solved
Apr 7, 2026
Easy
Software EngineerInternDescribe handling deadlines, pride, and conflict
Behavioral questions Answer the following interview prompts with concrete examples from your past work/school/internships: 1. Tight deadline: Tell me ...
Behavioral & Leadership
11
0
175 people solved
Feb 11, 2026
Easy
Data ScientistCompare two rare-event detection models statistically
You are evaluating two models (Model A and Model B) for rare-event detection (e.g., fraud, abuse, medical adverse event). Positives are extremely rare...
Machine Learning
63
0
575 people solved
Jan 17, 2026
Medium
Software EngineerImplement follow graph with snapshots and recommendations
Design and implement an in-memory “social network” component that supports following/unfollowing, point-in-time (snapshot) queries, and a simple recom...
Coding & Algorithms
40
0
579 people solved
Feb 2, 2026
Hard
Software EngineerDesign a rare-book lending and returns system
Design a rare-book lending and returns system System Design: Rare Books Circulation Across Multiple Branches Context Design a system to manage borrowi...
System Design
113
0
809 people solved
Jul 16, 2025
Easy
Software EngineerLargest Subset With Positive Bitwise AND
Problem Implement largest_positive_and_subset(nums). Choose a nonempty subset of the given nonnegative integers. The subset is valid when the bitwise ...
Coding & Algorithms
0
0
15 people solved
Jun 14, 2026
Hard
Software Engineer LockedC++ Fundamentals: Memory, Compilation, and Containers
This question tests deep knowledge of C++ internals, covering memory management, compilation mechanics, and standard container trade-offs. It evaluate...
Software Engineering Fundamentals
4
0
32 people solved
Jun 14, 2026
Easy
Data ScientistAnswer four core statistics questions
Problem set (timed) Answer the following four questions. 1) Covariance of order statistics Let \(X\) and \(Y\) be independent \(\mathrm{Unif}(0,1)\). ...
Statistics & Math
28
0
199 people solved
Dec 15, 2025
Medium
Software EngineerGenerate all strings by expanding wildcards
Problem Given a string s consisting only of characters '0', '1', and '', replace every '' with either '0' or '1' and return all possible resulting bin...
Coding & Algorithms
19
1
158 people solved
Dec 15, 2025
Hard
Software EngineerSenior+Plan a Safe Repository-Wide Identifier Migration
Plan a Safe Repository-Wide Identifier Migration You have a very large repository whose internal variables and function names use snake case. A conver...
Software Engineering Fundamentals
4
0
28 people solved
Apr 16, 2026