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
Medium
Software Engineer LockedDesign a Memo Q&A Agent for a Large Law Firm
This question evaluates ML system design skills, specifically retrieval-augmented generation (RAG) and LLM-grounded document retrieval at production s...
ML System Design
43
0
325 people solved
Jun 20, 2026
Medium
Backend EngineerDesign Map-Based Home Search
Design Map-Based Home Search Design the backend for customers searching for homes on a map. A query supplies an arbitrary rectangular map region and m...
System Design
3
0
21 people solved
Jul 16, 2026
Medium
Software EngineerConnect Your Career, Motivation, and Project Experience
Connect Your Career, Motivation, and Project Experience Give a coherent interview introduction that answers three related questions without reciting y...
Behavioral & Leadership
5
0
44 people solved
Jul 10, 2026
Medium
Machine Learning EngineerBuild a Small Agent or RAG Tool with the Mistral API
In a live coding interview, you receive an API token for an LLM backend and are asked to build a small agent or retrieval-augmented generation tool. D...
ML System Design
18
0
142 people solved
Jul 2, 2026
Hard
Software EngineerDesign a Thread-Safe Multi-Rule Rate Limiter
Design and reason about a rate limiter that begins with one rule and evolves to support multiple rules, concurrent requests, handler failures, and def...
Software Engineering Fundamentals
7
0
59 people solved
Jun 20, 2026
Easy
Software EngineerDesign a sandboxed cloud IDE
System Design: Sandboxed Cloud IDE (Colab-like) Design a multi-tenant, browser-based cloud IDE/notebook that lets users run code inside an isolated sa...
System Design
378
2
7155 people solved
Jan 22, 2026
Easy
Software Engineer AIDesign a Streaming Job Scheduler
Design and incrementally build a streaming job scheduler: a service (and supporting class) that continuously ingests tasks and dispatches them to work...
System Design
218
1
1909 people solved
Apr 9, 2026
Medium
Software EngineerExplain Lazy Loading and Frontend Code Splitting
Explain Lazy Loading and Frontend Code Splitting A single-page application has grown until its initial JavaScript bundle delays interactivity. Explain...
Software Engineering Fundamentals
0
0
12 people solved
Jul 26, 2026
Medium
Software EngineerDesign a Refund Workflow as a Directed Acyclic Graph
Design a Refund Workflow as a Directed Acyclic Graph Design a workflow engine representation for automatically refunding a user. Model the work as a d...
System Design
0
0
8 people solved
Aug 2, 2026
Medium
Data ScientistSenior+ LockedEstimate a Launch Impact with Difference in Differences
Estimate a regional product launch effect with difference in differences when retrospective randomization is unavailable. Define the estimand, test pa...
Analytics & Experimentation
10
1
107 people solved
Jun 14, 2026
Medium
Software EngineerReturn the K Closest Points with Deterministic Ties
Return the K Closest Points with Deterministic Ties Implement k_closest(points, target, k). Each point and the target are integer pairs. Return exactl...
Coding & Algorithms
0
0
6 people solved
Aug 6, 2026
Hard
Software EngineerDesign a Real-Time Top-K Ranking System
Design an object-oriented, real-time Top-K ranking system. The system continuously receives score updates for a large set of entities — for example us...
Software Engineering Fundamentals
419
2
5486 people solved
May 2, 2026
Medium
Software EngineerInternLast Truck to Leave a One-Dimensional Lane
Last Truck to Leave a One-Dimensional Lane Implement last_exit_time(lane_length, positions, velocities). Distinct trucks start at integer positions st...
Coding & Algorithms
24
0
429 people solved
Jul 3, 2026
Medium
Software EngineerDesign Tree Operations with DFS and BFS
Design an object-oriented tree class with several operations that require DFS and BFS traversal. Explain the node model, traversal APIs, and how you w...
Software Engineering Fundamentals
10
0
110 people solved
Jul 2, 2026
Hard
Software EngineerDesign Calendar Event CRUD with Unit Tests
Design and implement a small calendar application that supports creating, editing, and deleting events. The interviewer expects unit tests and clean s...
Software Engineering Fundamentals
22
0
168 people solved
Jul 2, 2026
Hard
Machine Learning EngineerExplain Transformer Internals and Implement Top-p Decoding
You are interviewing for an AI Scientist role. Explain the Transformer architecture in detail, including attention, positional encoding, encoder versu...
Machine Learning
15
0
104 people solved
Jul 2, 2026
Hard
Software EngineerImplement a Range Module with Add, Query, and Remove
Process Range Tracking Operations Implement processRanges(operations) -> queryResults. The tracker is initially empty. Process every operation from le...
Coding & Algorithms
2
0
20 people solved
Jul 16, 2026
Medium
Software EngineerConsolidate Three Partner APIs into a Query Service
Consolidate Three Partner APIs into a Query Service Design a service that retrieves data from three partner APIs, consolidates their different represe...
System Design
1
0
20 people solved
Jul 16, 2026
Medium
Software EngineerNavigate Challenges, Conflict, and Mentorship on a Major Project
Navigate Challenges, Conflict, and Mentorship on a Major Project Choose one substantial project that you personally helped deliver. Use concrete examp...
Behavioral & Leadership
2
0
51 people solved
Jul 16, 2026
Medium
Software EngineerSenior+Reason About Remote Browser Isolation and Secure Media Delivery
Reason About Remote Browser Isolation and Secure Media Delivery Discuss the security and delivery trade-offs among remote browser isolation, Zero Trus...
Software Engineering Fundamentals
0
0
9 people solved
Jul 30, 2026