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
Hard
Software EngineerDesign and evolve a reservation system
Design and evolve a reservation system System Design: Online Reservation System You are designing a backend platform to book time-based slots for serv...
System Design
9
0
92 people solved
Jul 17, 2025
Hard
Machine Learning EngineerExplain LLM fundamentals and trade-offs
Explain LLM fundamentals and trade-offs LLM Fundamentals — Onsite Interview Task Context: Assume a modern transformer-based LLM. Provide precise, conc...
Machine Learning
9
0
75 people solved
Jul 17, 2025
Hard
Machine Learning EngineerBuild an end-to-end ML pipeline
Build an end-to-end ML pipeline ML System Design: Shipment Delay Risk Scoring From a Single CSV You are given a CSV of shipment events with the follow...
ML System Design
6
0
92 people solved
Jul 17, 2025
Medium
Machine Learning EngineerImplement inventory allocation with backorders
Implement inventory allocation with backorders Design and implement a function to process an event stream for an e-commerce marketplace. Input: ( 1) i...
Coding & Algorithms
1
0
32 people solved
Jul 17, 2025
Medium
Software EngineerTrace and reduce redundant curl requests
Instrument and Optimize a Client's HTTP Requests for a Workflow You are pair-programming with the interviewer. You have a client (a script or applicat...
System Design
11
0
117 people solved
Jul 17, 2025
Medium
Data EngineerInternDescribe building and improving a dashboard
Describe a past project where you built a dashboard for business or product stakeholders. Explain the business goal, audience, metrics, data-quality w...
Behavioral & Leadership
2
0
51 people solved
Mar 9, 2025
Medium
Software EngineerCompute build order from dependencies
Compute build order from dependencies You are given a directed graph represented as a mapping where each key X maps to a list of tasks that depend on ...
Coding & Algorithms
3
0
45 people solved
Jul 16, 2025
Medium
Software EngineerDescribe your most impactful project
Describe your most impactful project Past Project Deep Dive (Behavioral & Leadership) Provide a structured narrative of a project you led or significa...
Behavioral & Leadership
15
0
104 people solved
Jul 16, 2025
Hard
Software EngineerDescribe end-to-end design of past project
Describe end-to-end design of past project System Design Deep Dive: Past Project End-to-End Provide a detailed, end-to-end walkthrough of a significan...
System Design
9
0
99 people solved
Jul 15, 2025
Medium
Software EngineerExplain Python lists, dicts, and concurrency
Explain Python lists, dicts, and concurrency Explain the differences between Python lists and dictionaries (maps), including common operations and the...
Data Manipulation (SQL/Python)
8
0
96 people solved
Jul 15, 2025
Medium
Software EngineerImplement a JavaScript frame player controller
Implement a JavaScript frame player controller Implement a frame-by-frame browser media controller with drift-proof scheduling Context You are given a...
Software Engineering Fundamentals
6
0
51 people solved
Jul 15, 2025
Medium
Software EngineerDetermine winner in optimal-play card game
Determine winner in optimal-play card game Given a row of N cards with integer values (values may be positive, zero, or negative), two players alterna...
Coding & Algorithms
20
2
159 people solved
Jul 15, 2025
Medium
Software EngineerImplement a pivot table transformation
Given a dataset of transactions with columns: user_id (string), category (string), subcategory (string), amount (float), ts (ISO timestamp), implement...
Data Manipulation (SQL/Python)
1
0
14 people solved
Jul 15, 2025
Hard
Software EngineerDesign a scalable key-value configuration service
Design a scalable key-value configuration service Design a Globally Distributed Key–Value Configuration Service Background You are asked to design a g...
System Design
5
0
52 people solved
Jul 15, 2025
Medium
Software EngineerSenior+Debug distributed-system performance problems
You are asked: “If a distributed system has a performance problem (latency/throughput regression), how would you approach it?” Describe a practical, s...
Software Engineering Fundamentals
6
0
76 people solved
Dec 17, 2025
Medium
Data ScientistAnswer common investment-bank research interview prompts
You are interviewing for a role related to equity research / research within an investment bank. In an initial screening (written or video), you are a...
Behavioral & Leadership
7
0
55 people solved
Dec 17, 2025
Medium
Data ScientistFind the Expected Number of Record Maxima
A permutation of the distinct values 1 through 100 is revealed from left to right. Replace the current maximum whenever the revealed value is strictly...
Statistics & Math
0
0
7 people solved
Jan 5, 2025
Medium
Software Engineer LockedImplement a Log Rate Limiter
This question evaluates a candidate's ability to design and implement time-based rate limiting and stateful event tracking using appropriate data stru...
Coding & Algorithms
9
0
82 people solved
Sep 25, 2025
Hard
Data ScientistFind lexicographically smallest string and elimination order
You remember two coding questions from an online assessment. Question 1: Return the lexicographically smallest string after a prefix/suffix reverse Yo...
Coding & Algorithms
11
0
80 people solved
Sep 25, 2025
Medium
Data ScientistPredict Impact of 'Online Indicator' Feature
LinkedIn Messaging: Online Presence Indicator LinkedIn plans to display an online presence indicator, such as a green dot, next to first-degree connec...
Analytics & Experimentation
13
0
45 people solved
Jul 12, 2025