Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.7k
Companies
511
Updated
08.16.2026
9.7k Questions 511 Companies08.16.2026
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
Medium
Software EngineerExpand Recursive Key-Value Placeholders in a Template
Expand Recursive Key-Value Placeholders in a Template Implement template expansion for a map of string keys to string values. A placeholder has the fo...
Coding & Algorithms
1
0
16 people solved
Aug 4, 2026
Medium
Software EngineerDesign an Extensible Animal-Chess Game Engine
Design an Extensible Animal-Chess Game Engine Design an object-oriented engine for a two-player, turn-based animal-chess game. The interviewer will su...
Software Engineering Fundamentals
11
0
175 people solved
Jul 16, 2026
Medium
Backend EngineerDesign Real-Time Vehicle Location Tracking
Design Real-Time Vehicle Location Tracking Design a system that ingests robotaxi locations and shows authorized clients a near-real-time map. Constrai...
System Design
1
0
14 people solved
Aug 6, 2026
Hard
Software EngineerAccelerate Tree-Model Inference
Accelerate Tree-Model Inference You must reduce inference latency and raise throughput for a deployed boosted-tree model without changing its predicti...
Machine Learning
1
0
14 people solved
Aug 6, 2026
Hard
Software EngineerBuild a Streaming Markdown Code Fence Parser
Implement a streaming Markdown parser that recognizes inline code spans marked with backticks and fenced code blocks marked with triple backticks. The...
Software Engineering Fundamentals
36
0
324 people solved
Jul 2, 2026
Hard
Software EngineerDebug Python LRU Cache-Key Construction
Debug Python LRU Cache-Key Construction The source reports a Python LRU-cache bug in key construction from args and **kwargs but does not provide the ...
Software Engineering Fundamentals
22
0
152 people solved
Jul 8, 2026
Hard
Software EngineerBuild a Resilient Chain of Clue-Driven HTTP Requests
Build a Resilient Chain of Clue-Driven HTTP Requests Implement or design a client that starts from one URL and follows a chain of HTTP responses. A su...
Software Engineering Fundamentals
4
0
85 people solved
Jul 18, 2026
Medium
Software EngineerRecover a Project That Has Gone Off Track
Recover a Project That Has Gone Off Track Describe a project you owned that stopped tracking toward its intended outcome or delivery plan. Explain how...
Behavioral & Leadership
0
0
8 people solved
Aug 13, 2026
Medium
Software EngineerDesign a Durable DAG Workflow for Order Refunds
Design a Durable DAG Workflow for Order Refunds An order that times out may need a refund. You are given a directed acyclic graph of refund steps and ...
Software Engineering Fundamentals
25
0
190 people solved
Jul 10, 2026
Hard
Software EngineerDesign an Indexable Deque with O(1) Access
Design a data structure backed by a deque that supports push front, push back, pop front, pop back, and O(1) access by logical index. Explain how an o...
Software Engineering Fundamentals
18
0
184 people solved
Jul 2, 2026
Medium
Data ScientistPlan the First Ninety Days in a New Trading Market
Plan the First Ninety Days in a New Trading Market You are asked to lead research for a new market such as crypto. Present a three-month plan from dat...
Product Design & Strategy
1
0
12 people solved
Aug 8, 2026
Medium
Software EngineerFind the K Closest Points to a Query Location
Implement k_closest_points(points, origin, k) for two-dimensional integer points. Return the k points closest to the query location origin. Rank point...
Coding & Algorithms
0
0
6 people solved
Aug 16, 2026
Medium
Data ScientistPresent and Defend a Product Experiment You Designed
Present and Defend a Product Experiment You Designed Describe a real experiment you designed or analyzed. The discussion will probe the decision conte...
Behavioral & Leadership
1
0
19 people solved
Aug 1, 2026
Medium
Software EngineerDesign a Platform for Training and Serving ML Models
Design an internal ML platform that lets data scientists train models, register reproducible versions, and deploy them for both online and batch infer...
ML System Design
1
0
18 people solved
Aug 2, 2026
Medium
Software EngineerReport Tree Levels and Balanced Subtrees
Implement describe_balanced_nodes(values) for a binary tree represented as a zero-based heap array. For an existing node at index i, its children are ...
Coding & Algorithms
0
0
9 people solved
Aug 11, 2026
Hard
Machine Learning Engineer LockedSelf-Attention: Implementation, Complexity, and Efficient Variants
This question evaluates a machine learning candidate's understanding of the self-attention mechanism, including its implementation, computational comp...
Machine Learning
43
0
366 people solved
Jun 27, 2026
Medium
Machine Learning EngineerDesign a Sequential Personalized Playlist Recommender
Design an ML system that generates a personalized, ordered 10-track playlist from a candidate pool of 10,000 tracks in real time. The entire playlist ...
ML System Design
0
0
7 people solved
Aug 14, 2026
Hard
Software EngineerDesign a Prompt Sharing Product
Design a Prompt Sharing Product The source separately reports a product-design interview about prompt sharing, including user flow, database schema, s...
System Design
14
0
99 people solved
Jul 8, 2026
Medium
Software EngineerDesign an Idempotent Double-Entry Ledger
Design a ledger service that records financial transactions using double-entry accounting. Clients submit operations over an unreliable network and ma...
System Design
8
0
113 people solved
Jun 16, 2026
Medium
Software EngineerNew GradOrganize a Product Initiative Across Stakeholders
Organize a Product Initiative Across Stakeholders Prompt Tell me about a time you brought structure to a product or project initiative that involved s...
Behavioral & Leadership
10
0
131 people solved
Jul 15, 2026