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 a prompt processing backend
Design a prompt processing backend System Design: Background Processing Backend for LLM Prompts Context Design a multi-tenant backend that processes l...
ML System Design
14
0
183 people solved
Jul 26, 2025
Hard
Product ManagerMeta PM Interview Questions
Product and Decision-Making Onsite Case Prompt Set You are a Product Manager candidate preparing for a mixed onsite loop covering strategy, data, desi...
Product / Decision Making
109
0
909 people solved
Jul 4, 2025
Medium
Data ScientistHow would you evaluate causal lift and a paywall change?
Question You are interviewing for a Data Scientist role at a consumer subscription platform (a two-sided social/dating app) that also runs an advertis...
Analytics & Experimentation
5
0
49 people solved
Mar 5, 2026
Medium
Software EngineerSearch Book Titles
You are given a list of book titles and a user query string. Return all titles that are relevant to the query. A title is considered relevant if any t...
Coding & Algorithms
3
0
36 people solved
Feb 3, 2026
Medium
Software EngineerSenior+Build Resilient Aggregation and Debug Routing
This onsite combined two software-engineering exercises: 1. Implement a service method that calls multiple mock downstream APIs, merges their response...
Software Engineering Fundamentals
26
0
213 people solved
Feb 3, 2026
Medium
Machine Learning EngineerDesign short-video retrieval with sparse text
You are designing the candidate-generation (retrieval) and recommendation system for a short-video app. Constraints and setting: - Users can search wi...
ML System Design
11
0
80 people solved
Feb 3, 2026
Medium
Machine Learning Engineer LockedImplement Linear Regression Gradient Descent
This question evaluates understanding of simple linear regression, batch gradient descent, loss function formulation, gradient derivation for model pa...
Machine Learning
6
0
58 people solved
Jan 6, 2026
Hard
Software EngineerHow do you learn new knowledge quickly?
Behavioral questions 1. How do you learn new knowledge/technology quickly? Provide a concrete example. 2. What was the most challenging project you wo...
Behavioral & Leadership
4
0
70 people solved
Jan 6, 2026
Medium
Machine Learning EngineerSenior+ LockedDesign a RAG-based assistant service
This question evaluates system-design and machine-learning engineering competencies related to Retrieval-Augmented Generation, including architecture ...
ML System Design
4
0
51 people solved
Jan 6, 2026
Medium
Machine Learning EngineerSenior+ LockedCompare preference alignment methods for LLMs
This question evaluates expertise in preference alignment techniques for large language models—including supervised fine-tuning, RLHF-style reward-mod...
Machine Learning
13
0
95 people solved
Jan 6, 2026
Hard
Data Scientist LockedForecast bikes available at a station
This question evaluates proficiency in time-series forecasting, feature engineering, handling temporal data splits, and incorporating operational cons...
Machine Learning
5
0
75 people solved
Jan 6, 2026
Medium
Software EngineerIntroduce yourself and explain your project
Behavioral questions 1. Introduce yourself (education/background, current role, what you focus on). 2. Where are you from? (brief personal background ...
Behavioral & Leadership
11
0
89 people solved
Jan 6, 2026
Medium
Software Engineer LockedDesign a large-scale temperature sensor system
This question evaluates system design and distributed-systems competencies including large-scale data ingestion, time-series storage, real-time visual...
System Design
10
0
94 people solved
Jan 6, 2026
Medium
Software Engineer LockedFind linked merchants by shared fields
This question evaluates the ability to model and detect entity linkages via exact field matching and weighted scoring as well as to reason about reach...
Coding & Algorithms
1
0
28 people solved
Jan 6, 2026
Medium
Software EngineerSelect next Hangman letter
Given the current state of a Hangman game, implement a function that selects the next letter with the highest likelihood of appearing in the secret wo...
Coding & Algorithms
18
0
176 people solved
Sep 6, 2025
Medium
Software EngineerParse and Reconstruct Stack Trace
Given a multi-line stack trace string from a single thread (e.g., each frame is in the form 'at Module::Function(file:line)'), design and implement a ...
Coding & Algorithms
45
1
674 people solved
Sep 6, 2025
Hard
Software EngineerWalk through a recent project design
System Design: End-to-End Project Walkthrough Provide a structured walkthrough of a recent project you led end-to-end. Organize your answer using the ...
System Design
24
0
174 people solved
Sep 6, 2025
Hard
Software EngineerDesign key management service
Design a Key Management Service (KMS) You are asked to design a production-grade, multi-tenant Key Management Service. A client provides a key identif...
System Design
9
0
147 people solved
Sep 6, 2025
Hard
Software EngineerDesign line-preserving file chunker pipeline
System Design: Pack Text Lines into Exact 100 MB Output Files Design a data pipeline that reads many text files of varying sizes and emits output file...
System Design
7
0
113 people solved
Sep 6, 2025
Hard
Software EngineerDesign auth, session security, and top-N users
Web App Design: Authentication, Security, and Top-N Active Users Context: Build a browser-based web application where a user signs in and the page dis...
System Design
24
0
215 people solved
Sep 6, 2025