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
Easy
Data ScientistHow to measure product success?
You are asked to evaluate whether a product or newly launched feature is successful. Describe how you would define success from a data science and pro...
Analytics & Experimentation
4
0
38 people solved
Jan 11, 2026
Medium
Software EngineerDesign a Twitter-like timeline service
Design a simplified Twitter-like system. The system should support: - User accounts and profiles - Follow and unfollow - Creating short text posts - V...
System Design
6
0
59 people solved
Feb 28, 2026
Medium
Software Engineer LockedDesign an image-to-multilanguage translator
This question evaluates a candidate's ability to design a scalable, low-latency system for processing images with OCR and multilingual translation, ex...
System Design
16
0
202 people solved
Feb 3, 2026
Easy
Software EngineerDesign an Online Coding Judge
Design a large-scale online coding practice and contest platform. Users should be able to browse programming problems, submit code in multiple languag...
System Design
5
0
68 people solved
Apr 24, 2026
Easy
Data ScientistDesign a CVR model for RTB bidding
Question You are a data scientist at a Demand-Side Platform (DSP) such as The Trade Desk, participating in Real-Time Bidding (RTB). For each ad opport...
Machine Learning
7
0
93 people solved
Oct 18, 2025
Medium
Software EngineerSolve Magic Dictionary and unknown traversal
Solve Magic Dictionary and unknown traversal LeetCode 676. Implement Magic Dictionary Determine and implement traversal/encoding that outputs nodes as...
Coding & Algorithms
14
0
135 people solved
Aug 4, 2025
Medium
Data ScientistInvestigate Causes of Driver WOW Score Drop
Investigate Causes of Driver WOW Score Drop Investigating a 10% QoQ Drop in Driver WOW (Satisfaction) Context Assume WOW is a standardized driver sati...
Analytics & Experimentation
34
0
111 people solved
Aug 4, 2025
Medium
Software EngineerFind the K-th Smallest Value in Two Sorted Arrays
Find the K-th Smallest Value in Two Sorted Arrays Given two nondecreasing integer arrays and a one-based integer k, return the k-th smallest value in ...
Coding & Algorithms
0
0
4 people solved
Mar 26, 2026
Medium
Software Engineer LockedDesign Real-Time Trending Likes
This question evaluates skills in designing scalable, low-latency real-time analytics systems, covering stream processing, time-windowed aggregations,...
System Design
4
0
33 people solved
May 26, 2026
Hard
Software Engineer LockedSolve Refueling and JSON Parsing Tasks
This multipart question evaluates algorithmic problem-solving and parsing competencies, specifically resource-optimization and data-structure use for ...
Coding & Algorithms
1
0
14 people solved
May 26, 2026
Medium
Machine Learning EngineerHow would you target promotions to grow consumers?
ML / Growth Scenario You own a system that sends promotion offers (e.g., "$10 off", "free delivery") to consumers to increase growth. Prompt Design an...
Machine Learning
14
0
140 people solved
Oct 17, 2025
Medium
Machine Learning Engineer LockedFind target-heavy sliding windows
This question evaluates array manipulation, counting and efficient algorithm design—focusing on the sliding-window technique for detecting and quantif...
Coding & Algorithms
8
0
82 people solved
Feb 27, 2026
Medium
Software Engineer LockedImplement a Task Processor
This question evaluates understanding of priority-based scheduling and dependency resolution, focusing on data structures and graph-ordering concepts ...
Coding & Algorithms
30
0
259 people solved
Feb 27, 2026
Easy
Software Engineer LockedDesign a Ticketmaster-like ticketing system
This question evaluates system design and distributed-systems competencies for an online event ticketing platform, focusing on scalability, concurrenc...
System Design
13
0
95 people solved
Nov 6, 2025
Medium
Machine Learning EngineerNew Grad LockedDesign a Product Tagging Pipeline
This question evaluates applied machine learning system design, multi-modal modeling, data engineering, and production deployment competencies involve...
ML System Design
5
0
46 people solved
Feb 2, 2026
Medium
Machine Learning EngineerNew Grad LockedFind K Nearest Points
This question evaluates proficiency with Euclidean distance metrics, selection algorithms, and efficient data structures for partial sorting, while re...
Coding & Algorithms
7
0
49 people solved
Feb 2, 2026
Medium
Machine Learning EngineerNew Grad LockedDesign a Trustworthy Ranking System
This question evaluates machine learning system design skills for building trustworthy ranking systems, addressing candidate generation, feature pipel...
ML System Design
7
0
66 people solved
Feb 2, 2026
Medium
Machine Learning EngineerNew Grad LockedExplain Core ML Concepts
This question evaluates understanding of foundational machine learning and deep learning concepts, including the bias–variance decomposition, differen...
Machine Learning
5
0
64 people solved
Feb 2, 2026
Easy
Data Scientist LockedHow to evaluate a new Carousel feature
This question evaluates a data scientist's competence in experimentation design, measurement framework formulation, metric definition, and diagnostic ...
Analytics & Experimentation
9
0
125 people solved
Feb 1, 2026
Medium
Software EngineerDesign an IP blacklist API
Design an API and backend service for an IP firewall blacklist system. The service should allow security administrators or automated abuse-detection s...
System Design
1
0
16 people solved
Apr 23, 2026