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
Machine Learning EngineerExplain key ML theory and techniques
Explain key ML theory and techniques This Amazon Machine Learning Engineer onsite covers a breadth of core ML theory and applied modeling. Be ready to...
Machine Learning
34
0
148 people solved
Aug 4, 2025
Medium
Data ScientistAssess Cultural Fit in Informal Hiring Conversations
Assess Cultural Fit in Informal Hiring Conversations Behavioral & Leadership — Informal Conversation Context Onsite conversation with a hiring manager...
Behavioral & Leadership
6
0
43 people solved
Aug 4, 2025
Medium
Data ScientistIdentify Key Metrics to Address Delivery Delays
Identify Key Metrics to Address Delivery Delays Scenario DoorDash, a food-delivery marketplace, is seeing growing customer complaints about orders arr...
Analytics & Experimentation
8
0
110 people solved
Aug 4, 2025
Medium
Data ScientistDifferentiate P-value and Confidence Interval in Statistics
Differentiate P-value and Confidence Interval in Statistics Statistics Knowledge Check (Onsite Data Scientist) Task Explain core inferential statistic...
Statistics & Math
8
0
97 people solved
Aug 4, 2025
Medium
Data ScientistDescribe Your Professional Journey and Leadership Experiences
Describe Your Professional Journey and Leadership Experiences Behavioral & Leadership Interview Prompt (Data Scientist — Technical Phone Screen) Scena...
Behavioral & Leadership
2
0
50 people solved
Aug 4, 2025
Medium
Data ScientistIdentify Overlapping Sessions and Optimize Coverage
Identify Overlapping Sessions and Optimize Coverage Scenario During the technical screen, candidates must implement interval algorithms used in fraud-...
Coding & Algorithms
13
0
118 people solved
Aug 4, 2025
Hard
Data ScientistDetermine Success Metrics for Circle Feature Optimization
Determine Success Metrics for Circle Feature Optimization Scenario Meta is evaluating a new social feature called Circle (similar to Facebook Groups),...
Analytics & Experimentation
11
0
78 people solved
Aug 4, 2025
Hard
Data ScientistDesign and Analyze A/B Test for Recommendation Widget
Design and Analyze A/B Test for Recommendation Widget Scenario You are designing and analyzing an online A/B test for launching a new recommendation w...
Analytics & Experimentation
75
0
170 people solved
Aug 4, 2025
Medium
Data ScientistSenior+Explain Shell Script Line-by-Line for Data Science Workflows
Scenario Technical screening for a Principal Data Scientist: reviewing shell script and Python classes Question Explain, line by line, what the provid...
Coding & Algorithms
58
0
117 people solved
Aug 4, 2025
Medium
Data ScientistDetermine Metrics to Measure Free-Trial Impact on Subscriptions
Determine Metrics to Measure Free-Trial Impact on Subscriptions A/B Test: Free Trial Offer Impact on Subscription Behavior Scenario You are analyzing ...
Analytics & Experimentation
60
0
156 people solved
Aug 4, 2025
Medium
Data ScientistSenior+Assess Amazon Leadership Principles in Behavioral Interviews
Assess Amazon Leadership Principles in Behavioral Interviews Scenario Amazon Data Scientist (often L5) onsite — the Leadership Principles (LP) behavio...
Behavioral & Leadership
62
0
265 people solved
Aug 4, 2025
Easy
Data ScientistInternChoose Between Precision and Recall for a Classification Decision
A binary classifier will support a real decision, and the model produces a probability score for each observation. Explain precision and recall, how t...
Machine Learning
2
0
28 people solved
Aug 4, 2025
Hard
Software EngineerExplain JS threading and useState vs useRef
Answer the following conceptual questions about JavaScript and React: 1. JavaScript and multithreading - How does JavaScript's execution model wo...
Software Engineering Fundamentals
10
0
119 people solved
Dec 6, 2025
Easy
Software EngineerImplement stateful connection router simulator
You are implementing a simplified connection router / load balancer for a Jupyter-like multi-tenant server system. There are N target servers, indexed...
Coding & Algorithms
2
0
34 people solved
Dec 6, 2025
Medium
Software Engineer LockedFind Final Ball Holder
This question evaluates understanding of functional graphs, cycle detection, and handling large-step transitions in deterministic mappings where repea...
Coding & Algorithms
3
0
42 people solved
Mar 18, 2026
Medium
Data ScientistPresent a Clear Data Science Career Narrative
Present a Clear Data Science Career Narrative In an initial data science interview, you are asked four common questions: introduce yourself, explain w...
Behavioral & Leadership
1
0
13 people solved
May 21, 2026
Hard
Software Engineer LockedImplement an LFU Cache
This question evaluates understanding of algorithmic design and data structure management for cache eviction policies, focusing on frequency- and rece...
Coding & Algorithms
1
0
6 people solved
May 21, 2026
Medium
Software Engineer LockedDesign ad click aggregator and file sync service
This question evaluates system design competencies in building scalable, reliable distributed services—covering high-throughput event ingestion and ag...
System Design
23
0
256 people solved
Jan 22, 2026
Medium
Software Engineer LockedBuild a responsive grid of fixed boxes
This question evaluates front-end layout and responsiveness skills including HTML/CSS and React component rendering, plus performance scaling for larg...
Software Engineering Fundamentals
6
0
70 people solved
Jan 22, 2026
Hard
Software EngineerSenior+Explain owning and debugging infra modules
Describe a time you were responsible for a storage/distributed-systems/infra component (or a similarly low-level, reliability-critical module). The in...
Behavioral & Leadership
12
0
78 people solved
Jan 22, 2026