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 scalable rate limiter with token bucket
You are asked to design and implement a rate limiter for an HTTP API. Requirements - Limit each client (e.g., user ID or API key) to at most N request...
System Design
15
0
112 people solved
Oct 16, 2025
Easy
Software EngineerNew GradImplement Interview Coding Problems
Solve the following independent coding tasks from a new-grad software engineering interview. 1. Implement a hash map from scratch. - Support integer k...
Coding & Algorithms
1
0
20 people solved
Nov 22, 2025
Medium
Software EngineerHow do you win project buy-in?
Answer the following behavioral questions: 1. Describe a time when you proposed a project or technical initiative and convinced your manager and other...
Behavioral & Leadership
10
0
83 people solved
Jan 1, 2026
Medium
Software Engineer LockedDesign a package installer with dependencies
This question evaluates understanding of package management and dependency resolution, including version constraints, detection of missing packages, c...
System Design
7
0
62 people solved
Jan 1, 2026
Medium
Product ManagerGoogleness & Behavioral Deep-Dive
PM Onsite Behavioral and Product Critique Prompts You are a Product Manager candidate in an onsite interview. Respond concisely in two to three minute...
Behavioral & Leadership
9
0
158 people solved
Jul 4, 2025
Medium
Site Reliability Engineer LockedQuery Machines and Mark Them Offline
This question evaluates competency in interacting with RESTful HTTP APIs, JSON parsing and filtering, automation of operational workflows, resilient e...
Coding & Algorithms
9
0
121 people solved
Feb 13, 2026
Medium
Software EngineerMerge overlapping corrections
Implement correctionMerge(corrections). You are given a list of text-correction spans. Each correction applies to an inclusive interval [start, end] a...
Coding & Algorithms
11
0
110 people solved
Feb 13, 2026
Medium
Software EngineerDesign Flight Booking and Voting Systems
Answer both system design prompts. Part A: Flight Ticket Booking System Design the backend for a flight ticket booking product. The system should supp...
System Design
2
0
28 people solved
Apr 3, 2026
Medium
Software EngineerSenior+Implement Caches, Undo, and Traversal
Solve the following coding tasks. For each task, define clean APIs, implement the core logic, and be prepared to explain time and space complexity. Ta...
Coding & Algorithms
5
0
51 people solved
Apr 3, 2026
Medium
Software Engineer LockedDesign a distributed job scheduler
This question evaluates understanding of distributed systems, reliable job scheduling and dispatch, fault-tolerant worker coordination (heartbeats and...
System Design
20
0
201 people solved
Apr 3, 2026
Medium
Software Engineer LockedImplement AudioStream Mixer
This question evaluates skill in designing stateful data structures, time-indexed array manipulation, and per-track mixing semantics including overwri...
Coding & Algorithms
3
0
27 people solved
Apr 3, 2026
Easy
Data Scientist LockedHow do you compute expected return for two projects?
This question evaluates a candidate's ability to compute expected return and net present value by modeling probabilistic outcomes, cash flows, discoun...
Statistics & Math
9
0
95 people solved
Feb 12, 2026
Hard
Product ManagerThe Most Comprehensive Amazon PM Questions
Behavioral & Leadership Interview Prompt Set: Amazon Product Manager Onsite Prepare for a Product Manager onsite behavioral interview using Amazon-sty...
Behavioral & Leadership
58
0
430 people solved
Jul 4, 2025
Medium
Data ScientistCompute and interpret 95% confidence intervals
Answer all parts. Show formulas and intermediate values. A) An A/B test measures conversion: Variant A has 410 conversions out of 5000 visitors; Varia...
Statistics & Math
7
0
89 people solved
Oct 13, 2025
Medium
Data ScientistSenior+Describe challenge, influence, and mentorship outcomes
Answer three parts using the STAR method and concrete metrics: (1) Most challenging project: what was the goal, constraints, and your specific ownersh...
Behavioral & Leadership
3
0
31 people solved
Oct 13, 2025
Medium
Data ScientistShow help, mistake recovery, and achievement
Behavioral & Leadership (Technical Screen) Answer all three parts below with concrete metrics, trade-offs, and decision rationale. Assume a Data Scien...
Behavioral & Leadership
4
0
54 people solved
Oct 13, 2025
Medium
Data Scientist LockedDiagnose post-release conversion regression rigorously
This question evaluates a Data Scientist's skills in causal inference, experimental design, statistical power and variance-reduction techniques, ident...
Analytics & Experimentation
15
0
115 people solved
Oct 13, 2025
Medium
Data ScientistCompute sample sizes and error control
Using the Biker experiment context, compute required sample sizes and describe error control under practical constraints. Show formulas and numeric an...
Statistics & Math
10
0
86 people solved
Oct 13, 2025
Hard
Data ScientistDesign a robust conversion propensity model
Daily Notification Propensity Model (Top-20% Targeting) Context You need to score users once per day with the probability they will make a purchase wi...
Machine Learning
15
0
123 people solved
Oct 13, 2025
Medium
Data ScientistDerive distribution of an inverse transform
Change of Variables via the Logistic Map You are given a random variable X with density f_X supported on (0, 1). Define the strictly increasing logist...
Statistics & Math
3
0
63 people solved
Oct 13, 2025