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
Easy
Software EngineerValidate a Third-Party Identity Payload
Validate a Third-Party Identity Payload A third-party service returns a JSON payload with a fixed documented structure. The first subject contains a V...
Software Engineering Fundamentals
0
0
16 people solved
Jun 27, 2026
Easy
Software EngineerDesign a news aggregator system
Rippling Onsite — Two Parts This Software Engineer onsite has two parts: a system design and a short coding follow-up. Both are below. Treat them as o...
System Design
188
0
1393 people solved
Dec 5, 2025
Medium
Software EngineerAnalyze the Fairness of an Incremental Shuffle
Consider the following function, where random() returns an independent value uniformly distributed in [0, 1) on every call: `javascript function shuff...
Software Engineering Fundamentals
2
0
22 people solved
Jun 10, 2026
Medium
Software EngineerIntern LockedDesign Human Avoidance for Warehouse Robots
This question evaluates sensor fusion, perception-to-motion data flow, short-horizon motion planning, and real-time safety-critical decision-making fo...
System Design
27
0
373 people solved
May 11, 2026
Medium
Software EngineerExplain Why This Company and Role Interest You
Explain Why This Company and Role Interest You Why are you interested in this company, and why is this software engineering role the right next step f...
Behavioral & Leadership
3
0
26 people solved
Jul 6, 2026
Easy
Software EngineerLongest Substring Without Repeated Characters
Problem Implement longest_unique_substring(s). Return the longest contiguous substring of s that contains no repeated character. If several substrings...
Coding & Algorithms
1
0
11 people solved
Jul 16, 2026
Medium
Software Engineer LockedDesign an Offline Merchant Payment System with Reconciliation
Prepare for a OpenAI system design interview about design an offline merchant payment system with reconciliation. This question focuses on requirement...
System Design
13
0
126 people solved
Jun 22, 2026
Medium
Software EngineerTrace Virtual Address Translation Through TLBs, Page Tables, and Caches
Trace Virtual Address Translation Through TLBs, Page Tables, and Caches Explain how a CPU translates a virtual address to a physical address in a page...
Software Engineering Fundamentals
1
0
16 people solved
Jul 1, 2026
Hard
Software EngineerDiscuss Transferable Experience for a New Mobile Product Team
Discuss Transferable Experience for a New Mobile Product Team In a manager conversation for a new native mobile product team, you are asked about your...
Behavioral & Leadership
2
0
16 people solved
Jun 1, 2026
Hard
Software EngineerDesign a bank account ledger
Design a Bank Account Ledger Design a bank account ledger service for a fintech app. The system is built on an immutable, double-entry ledger so it is...
System Design
89
0
752 people solved
Sep 6, 2025
Medium
Software EngineerPresent Your Background and Respond to an AI-Use Concern
Present Your Background and Respond to an AI-Use Concern In a hiring-manager conversation, you are asked to introduce yourself and discuss a project. ...
Behavioral & Leadership
1
0
11 people solved
Jun 21, 2026
Hard
Software EngineerCount Overlapping Rectangle Updates on a Grid
Count Overlapping Rectangle Updates on a Grid Implement range_add_counts(n, rectangles). Start with an n x n matrix of zeroes. Each rectangle is repre...
Coding & Algorithms
11
1
61 people solved
Jul 10, 2026
Medium
Frontend EngineerDesign a ChatGPT Playground
Design a web-based AI playground — a prompt-testing console similar to the OpenAI / ChatGPT Playground. A signed-in user types a prompt, picks a model...
System Design
25
0
216 people solved
Apr 25, 2026
Medium
Backend EngineerSenior+ AI LockedEvolve Cursor Pagination Without Breaking Clients
Debug bidirectional cursor pagination when many transactions share the same timestamp, then add amount sorting without breaking old clients. Define st...
Software Engineering Fundamentals
5
0
61 people solved
Jun 12, 2026
Hard
Software EngineerDesign an in-memory order matching engine
You are asked to design an in-memory order book / order matching system for a single electronic trading venue. The implementation language is C++, and...
System Design
103
0
735 people solved
Dec 8, 2025
Medium
Machine Learning Engineer LockedDebug a Broken Transformer
This question evaluates proficiency in debugging and reconfiguring Transformer-based deep learning models, covering competencies in model internals (a...
Machine Learning
105
0
826 people solved
Mar 3, 2026
Medium
Software Engineer AI LockedDesign an AI Gateway
This question evaluates system design competencies for a multi-tenant AI gateway, including architectural design, unified API and authentication patte...
System Design
47
0
325 people solved
Feb 17, 2026
Medium
Software Engineer LockedProject Deep Dive + Core-Values Behavioral Round
This behavioral and leadership interview question evaluates a software engineer's ability to demonstrate genuine technical ownership through a deep di...
Behavioral & Leadership
16
0
153 people solved
Jun 20, 2026
Medium
Software EngineerSenior+Design Messaging With Message Deletion
Design a real-time messaging application with channels or conversations, message history, and message deletion. Focus especially on how deletion behav...
System Design
4
0
49 people solved
Apr 7, 2026
Hard
Software EngineerDetermine Reachability for a Chinese-Chess Horse with Blocked Legs
Determine Reachability for a Chinese-Chess Horse with Blocked Legs Implement a function that determines whether a Chinese-chess horse can reach a targ...
Coding & Algorithms
5
1
45 people solved
Jul 9, 2026