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
Data ScientistDescribe your most and least engaging work
You are interviewing for a Data Scientist role. The hiring manager asks: What kinds of work have been the most engaging for you, and what kinds have b...
Behavioral & Leadership
17
0
169 people solved
Apr 9, 2026
Medium
Software EngineerSenior+Find the Minimum Edge Score on a Path Between Two Cities
Find the Minimum Edge Score on a Path Between Two Cities An undirected road network contains n cities numbered from 1 through n. Each road is represen...
Coding & Algorithms
3
0
23 people solved
Jul 9, 2026
Medium
Machine Learning EngineerImplement Autoregressive Decoding in PyTorch
Implement an autoregressive text-generation function in PyTorch. You are given a language model that, for an input tensor of token IDs, returns logits...
Machine Learning
8
0
59 people solved
Jan 10, 2026
Medium
Software EngineerChoose Fast or Cheap Models
You are building an AI-powered product and must choose between two inference options for each request: - Option A: higher cost per token, but lower la...
ML System Design
13
0
107 people solved
Jan 10, 2026
Medium
Software Engineer LockedDesign nearest-available-taxi lookup with updates
This question evaluates the ability to design scalable, low-latency geospatial lookup services under high update and query rates, assessing skills in ...
System Design
15
0
202 people solved
Jan 10, 2026
Medium
Software EngineerSenior+ LockedDesign bookstore and chat messaging systems
This question evaluates a candidate's competency in large-scale system design, including distributed systems architecture, data modeling, consistency ...
System Design
32
0
276 people solved
Oct 10, 2025
Medium
Data Engineer LockedDesign TikTok Data Engineering Systems
This question evaluates data engineering competencies including scalable streaming ingestion, processing orchestration, data partitioning and failure ...
System Design
11
0
81 people solved
Jan 30, 2026
Hard
Data ScientistSolve coin probability and Bayesian inference problems
Coin-Flip Statistics: Pattern Racing, Runs, and Bayesian Updating You are given three independent questions about fair coin tossing and Bayesian updat...
Statistics & Math
8
0
75 people solved
Sep 6, 2025
Hard
Software EngineerDesign distributed log storage service
Design a Distributed Append-Only Log Storage System You are asked to design the storage layer of a distributed, partitioned, replicated append-only lo...
System Design
13
0
100 people solved
Sep 6, 2025
Hard
Machine Learning EngineerArchitect an asynchronous RL post-training system
System Design: Asynchronous RLHF/RLAIF Post-Training for a Production Chat LLM Context You operate a chat LLM that already serves real user traffic. Y...
ML System Design
23
3
192 people solved
Sep 6, 2025
Medium
Software EngineerSolve server updates and grid inconvenience minimization
1) You are given an integer array server of length n, where server[i] is the number of requests the i-th server can process. Over multiple days, you r...
Coding & Algorithms
6
0
90 people solved
Sep 6, 2025
Medium
Software EngineerAnswer common behavioral questions
Behavioral Interview: STAR Responses for a Technical Screen (Software Engineer) You are preparing for a technical screen that includes behavioral and ...
Behavioral & Leadership
27
0
192 people solved
Sep 6, 2025
Easy
Software EngineerExplain role, motivations, values, and relocation expectations
Question This is a Citadel HR/recruiter screen for a Software Engineer role. The recruiter walks through a standard set of behavioral and logistics qu...
Behavioral & Leadership
12
0
144 people solved
Sep 6, 2025
Hard
Software EngineerDesign a scalable, reliable system
System Design: Global Photo/Video File Storage and Sharing ("CloudDrive") Context Design a scalable, highly reliable consumer service where users uplo...
System Design
35
0
344 people solved
Sep 6, 2025
Easy
Data ScientistChoose fastest way to transfer 2 TB
You need to transfer a 2 TB dataset to someone located in San Francisco as fast as possible. - What transfer method(s) would you choose and why? - St...
Coding & Algorithms
10
0
132 people solved
Nov 13, 2025
Medium
Data ScientistDeliver a Data Solution Under Tight Deadlines
Deliver a Data Solution Under Tight Deadlines Behavioral Prompt: Delivering Under a Tight Timeline Scenario A critical product launch date was moved u...
Behavioral & Leadership
49
0
194 people solved
Aug 4, 2025
Medium
Backend Engineer LockedDesign an Instagram-like platform
This question evaluates proficiency in scalable backend architecture, distributed systems, data modeling, media storage and processing, API design, fe...
System Design
4
0
52 people solved
Apr 8, 2026
Hard
Machine Learning Engineer LockedSearch Monster Battle Strategies
This question evaluates algorithmic problem-solving around deterministic simulation and state-space exploration, focusing on handling transient state ...
Coding & Algorithms
26
0
211 people solved
Apr 8, 2026
Hard
Data EngineerWrite SQL for car rental utilization by city
SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...
Coding & Algorithms
12
2
187 people solved
Dec 1, 2025
Medium
Software Engineer LockedReview concurrent code quality
This question evaluates skills in concurrent programming, code review judgment, and software design by focusing on misuse of volatile, thread-safety w...
Software Engineering Fundamentals
4
0
68 people solved
Jan 29, 2026