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 EngineerDesign Retrieval-Augmented Answers from a Document Vault
Design a service that accepts a user's prompt, searches a large document vault, and returns a grounded answer with citations to relevant source passag...
ML System Design
11
0
115 people solved
Jul 27, 2026
Medium
Software EngineerNew GradRecover from a Missed Deadline
Recover from a Missed Deadline Prompt Tell me about a deadline you missed or were on course to miss. Explain how the commitment was made, when you rec...
Behavioral & Leadership
17
0
275 people solved
Jul 15, 2026
Medium
Software EngineerSenior+Design a Low-Latency Metrics and Alerting Platform
Design a Low-Latency Metrics and Alerting Platform Design a multi-tenant platform that collects host and application metrics, stores time-series data,...
System Design
35
0
366 people solved
Jul 12, 2026
Medium
Software EngineerDesign a Layered ASCII Canvas Command Processor
Design a Layered ASCII Canvas Command Processor Design a program for a fixed 10 x 6 ASCII canvas with layered filled rectangles. Commands draw a new f...
Software Engineering Fundamentals
2
0
38 people solved
Aug 6, 2026
Hard
Software EngineerDesign a Key-Value Store with Hit Counting
Design a Key-Value Store with Hit Counting Design an in-memory key-value store together with a hit-counter capability. The phrase "hit counter" is amb...
Software Engineering Fundamentals
6
0
77 people solved
Jul 25, 2026
Easy
Software EngineerCount Rectangle Coverage on a Grid
Count Rectangle Coverage on a Grid You are given an n x n grid initially filled with zeroes and a list of inclusive rectangular updates. Each rectangl...
Coding & Algorithms
43
2
346 people solved
Jul 21, 2026
Easy
Data ScientistSenior+Reduce Cold-Food Incidents with Metrics and an Insulated-Bag Experiment
Reduce Cold-Food Incidents with Metrics and an Insulated-Bag Experiment A delivery marketplace wants to reduce the support costs, credits, and refunds...
Analytics & Experimentation
9
0
69 people solved
Jul 27, 2026
Medium
Software EngineerDesign a Distributed Token-Bucket Rate Limiter
Design a distributed rate limiter using token buckets. Each user or API key has a bucket with a fixed capacity. Tokens refill at a configured rate, an...
System Design
3
0
30 people solved
Aug 9, 2026
Medium
Software EngineerMatch Limit Orders with Price-Time Priority
Implement an in-memory limit-order matcher that processes orders in arrival order and returns both the executed trades and the final resting order boo...
Coding & Algorithms
7
0
52 people solved
Jul 31, 2026
Easy
Backend EngineerDesign a Durable Task Scheduling Service
Design a Durable Task Scheduling Service The initial prompt is “design a task scheduler.” Begin by distinguishing an in-process timer, a durable delay...
System Design
8
0
65 people solved
Jul 27, 2026
Medium
Software EngineerReason About Rate Limiting Under Memory and Throughput Pressure
Reason About Rate Limiting Under Memory and Throughput Pressure Design an in-memory rate limiter and then extend the design for two production concern...
Software Engineering Fundamentals
5
0
48 people solved
Aug 1, 2026
Easy
Software EngineerInternDiscuss Feedback, User Needs, Influence, Deadlines, and Learning
Discuss Feedback, User Needs, Influence, Deadlines, and Learning Answer the following behavioral questions with distinct examples where possible. Make...
Behavioral & Leadership
4
0
48 people solved
Aug 1, 2026
Medium
Data ScientistChoose Ranking Functions, Customer Value Metrics, and Predictive Models
Choose Ranking Functions, Customer Value Metrics, and Predictive Models A global e-commerce team asks three connected fundamentals: distinguish SQL ra...
Machine Learning
2
0
42 people solved
Aug 3, 2026
Medium
Machine Learning EngineerDesign an Entitlement-Aware Agentic Portfolio Workflow
Design an Entitlement-Aware Agentic Portfolio Workflow Design an agentic workflow that accepts a portfolio-related request, obtains only the data the ...
System Design
3
0
35 people solved
Aug 5, 2026
Medium
Software EngineerImplement A Prioritized Task Scheduler With Parent Dependencies
Implement a task scheduler. Each task has an id, due date, create time, high-priority flag, assignee, completion status, description, and optionally a...
Software Engineering Fundamentals
109
2
727 people solved
Jul 3, 2026
Easy
Data AnalystAnalyze Mission Outcomes and Allocate Response Units
Analyze Mission Outcomes and Allocate Response Units You receive historical mission-level data for a set of response units. Assume one row represents ...
Data Manipulation (SQL/Python)
19
0
257 people solved
Jul 8, 2026
Medium
Data ScientistEvaluate an Agentic Decision System End to End
Evaluate an Agentic Decision System End to End You are replacing a rule-based workflow with an agent that selects tools and recommends operational dec...
Software Engineering Fundamentals
5
0
50 people solved
Jul 30, 2026
Hard
Software EngineerDesign Chat APIs, Storage, and Core Message Flows
Design Chat APIs, Storage, and Core Message Flows Design the API and database model for a chat service. Cover direct and group conversations, sending ...
System Design
4
0
66 people solved
Jul 25, 2026
Medium
Software EngineerDesign a Multi-Level Expiring Item Store
Design a Multi-Level Expiring Item Store Design a class with initialization, store, and retrieve operations for items placed into ordered storage leve...
Software Engineering Fundamentals
6
0
69 people solved
Jul 23, 2026
Medium
Software EngineerDesign Blackjack Hands, Splits, and a Multi-Deck Shoe
Design Blackjack Hands, Splits, and a Multi-Deck Shoe Design the core object model for a blackjack game. A player may split two equal-valued cards, pr...
Software Engineering Fundamentals
4
0
37 people solved
Aug 4, 2026