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 EngineerDesign a Recipe and Inventory Ordering Service
Design a Recipe and Inventory Ordering Service Scenario Design an object-oriented service with recipes, supplies, and orders. A recipe has a unique na...
Software Engineering Fundamentals
5
0
54 people solved
Apr 4, 2026
Easy
Software EngineerDesign exchange–trading system message flow
Design the message contract and flow between a firm's trading system (OMS/EMS) and an external exchange. Assume: - The trading system sends orders and...
System Design
124
0
860 people solved
Dec 15, 2025
Medium
Software EngineerBuild Nested Comments from Parent References
Build Nested Comments from Parent References You receive a flat collection of comment records. Each record has a unique comment ID, a parentId field, ...
Software Engineering Fundamentals
0
0
4 people solved
Aug 1, 2026
Easy
Data ScientistSolve estimation and probability brainteasers
This is a set of independent estimation and probability brainteasers of the kind asked rapid-fire from a slide deck. Treat each one separately. For ev...
Statistics & Math
123
0
1629 people solved
Nov 13, 2025
Easy
Software EngineerConnect Your Hardest Project to Your Interest in a Role
Connect Your Hardest Project to Your Interest in a Role Give a concise self-introduction that explains why this company and role interest you. Then us...
Behavioral & Leadership
3
0
42 people solved
Jul 2, 2026
Medium
Software EngineerSenior+ LockedDesign a Distributed Cron Job Scheduler
Design a distributed cron scheduler that creates recurring runs, dispatches work, tracks attempts, and recovers from crashes and partitions. Address d...
System Design
3
0
54 people solved
May 29, 2026
Hard
Software Engineer LockedConsistent Hashing Ring with Virtual Nodes for Shard Rebalancing
This question evaluates a candidate's ability to design and implement a consistent hashing ring with virtual nodes for distributing keys across shards...
Coding & Algorithms
7
0
47 people solved
Jun 26, 2026
Hard
Software Engineer LockedDesign an Automated Jira-Ticket-to-PR System
This system design question evaluates expertise in distributed systems, asynchronous job processing, and queue-based architecture. It tests practical ...
System Design
18
0
166 people solved
Jun 15, 2026
Medium
Machine Learning EngineerSenior+ LockedDesign Video Intelligence for Investigations
This question evaluates a candidate's competency in designing scalable, multimodal video intelligence systems that integrate machine learning, informa...
ML System Design
18
0
145 people solved
May 26, 2026
Hard
Software EngineerIntern LockedDesign low-latency trading infrastructure
This question evaluates understanding of low-latency trading system architecture, networking and protocol trade-offs (TCP/IP vs UDP), time synchroniza...
System Design
145
0
1733 people solved
Dec 5, 2025
Medium
Machine Learning EngineerSenior+ LockedDesign Comment Prediction Ranking System
This question evaluates proficiency in end-to-end machine learning system design for predicting user engagement, specifically the probability of a use...
ML System Design
17
0
207 people solved
Jun 4, 2026
Medium
Software EngineerDesign a Tier-Aware AI Video Generation Service
Design a Tier-Aware AI Video Generation Service Prompt Design a service that accepts a generation request, runs an expensive video-generation workflow...
System Design
6
0
53 people solved
Jul 1, 2026
Medium
Software EngineerResolve Conflict and Set a Team Objective
Resolve Conflict and Set a Team Objective Prepare two behavioral examples. Use real situations, distinguish your actions from the team's, and be ready...
Behavioral & Leadership
7
0
52 people solved
Jul 4, 2026
Medium
Software EngineerNew GradCount Grid Paths Without Three Consecutive Moves
Count Paths Without Three Consecutive Moves A frog starts at (0, 0) and must reach (right_steps, up_steps). Every move is exactly one unit right (R) o...
Coding & Algorithms
2
0
24 people solved
Jul 28, 2026
Medium
Software Engineer LockedDesign a Shared Calendar Service
Covers designing a shared calendar service: the database schema for events and recurring rules, reminders, and multi-user sharing and permissions. Inc...
System Design
43
0
382 people solved
Jun 1, 2026
Easy
Software EngineerFind the Single Value in a Sorted Array of Pairs
Find the Single Value in a Sorted Array of Pairs Problem Implement singleNonDuplicate(values) -> value. values is sorted in nondecreasing order. Exact...
Coding & Algorithms
1
0
17 people solved
Jun 22, 2026
Medium
Machine Learning Engineer LockedExplain ranking cold-start strategies
This question evaluates an engineer's competency in handling cold-start for users and items, constructing and applying content-based embeddings, organ...
Machine Learning
68
1
458 people solved
Mar 30, 2026
Medium
Frontend EngineerExplain JavaScript Scope, Closures, Timers, and the Event Loop
Explain JavaScript Scope, Closures, Timers, and the Event Loop Answer the following JavaScript runtime questions precisely. Distinguish the language e...
Software Engineering Fundamentals
1
0
27 people solved
Jul 13, 2026
Medium
Software EngineerDescribe Something New You Learned Recently
Describe Something New You Learned Recently Describe one meaningful thing you learned during the last six months. Explain why you chose it, how you le...
Behavioral & Leadership
6
0
51 people solved
Jul 13, 2026
Medium
Software Engineer LockedAnswer Backend Behavioral Questions with Follow-up Depth
Prepare a structured Google behavioral interview answer for answer backend behavioral questions with follow-up depth. The prompt helps candidates fram...
Behavioral & Leadership
12
0
87 people solved
Jun 5, 2026