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Tech Interview Questions

Practice 8,801+ interview questions from top companies including Google, Meta, Amazon, and more. Filter by company, role, and category.

Popular Interview Questions

  • Design Multi-Dimensional Request Rate Limiting - Roblox
  • Count Matrix Cells Whose Row and Column Neighbors Match - Hudson River Trading
  • Navigate a Maze Through a Next-Step API - Ramp
  • Design GPU Scheduling for a Video Generation Platform - OpenAI
  • Build a Small Agent or RAG Tool with the Mistral API - Mistral AI
  • Design a Distributed Logging System - Uber
  • Design a Prompt Playground - Anthropic
  • Implement a Single-Screen Tic-Tac-Toe Game with State Management - Ramp
  • Machine Learning Fundamentals: Optimizers, Scaling Laws, and Clustering - Meta
  • LLM Fundamentals: Tokenization Design and KL-Regularized SFT - Amazon

Interview Questions

Practice the exact questions companies are asking right now.

Questions
8.8k
Companies
457
Updated
07.04.2026
8.8k Questions 457 Companies07.04.2026
PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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."

PLTCHK testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
Roblox logo
Roblox
Easy
Software Engineer Locked

Design Multi-Dimensional Request Rate Limiting

Design a rate limiter for a backend service that runs across multiple application servers. The system must decide, for every incoming request, whether...

System Design
169
0
2047 people solved
May 4, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer

Count Matrix Cells Whose Row and Column Neighbors Match

Given a matrix, count how many cells have the property that every other value in the same row and every other value in the same column are all equal t...

Software Engineering Fundamentals
3
0
36 people solved
Jul 2, 2026
Ramp logo
Ramp
Medium
Software Engineer

Navigate a Maze Through a Next-Step API

You are given an API that returns the next location you should visit in a maze. Starting from an initial location, repeatedly call the API until you r...

Software Engineering Fundamentals
1
0
35 people solved
Jul 2, 2026
OpenAI logo
OpenAI
Medium
Software EngineerSenior+

Design GPU Scheduling for a Video Generation Platform

Design GPU scheduling for a video generation platform where requests have different durations, priorities, and capacity needs. <details> <summary>Hint...

System Design
7
0
53 people solved
Jun 27, 2026
Mistral AI logo
Mistral AI
Medium
Machine Learning Engineer AI

Build a Small Agent or RAG Tool with the Mistral API

In a live coding interview, you receive an API token for an LLM backend and are asked to build a small agent or retrieval-augmented generation tool. D...

ML System Design
3
0
33 people solved
Jul 2, 2026
Uber logo
Uber
Medium
Software Engineer

Design a Distributed Logging System

Design a Distributed Logging System You are asked to design a distributed logging system for a large microservices platform (think of a ride-hailing c...

System Design
18
0
164 people solved
Jun 8, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design a Prompt Playground

Design a Prompt Playground (ChatGPT / Claude Playground) Design a "prompt playground" web product: an interactive surface where a developer types a pr...

System Design
7
0
67 people solved
Jun 23, 2026
Ramp logo
Ramp
Medium
Software Engineer

Implement a Single-Screen Tic-Tac-Toe Game with State Management

Implement a single-screen Tic-Tac-Toe game. Maintain game state, support player moves, detect wins and draws, prevent invalid moves, and keep the impl...

Software Engineering Fundamentals
4
0
31 people solved
Jul 2, 2026
Meta logo
Meta
Hard
Machine Learning Engineer

Machine Learning Fundamentals: Optimizers, Scaling Laws, and Clustering

Machine Learning Fundamentals: Optimizers, Scaling Laws, and Clustering This is a fundamentals round covering three loosely related areas of machine l...

Machine Learning
3
0
48 people solved
Jun 27, 2026
Amazon logo
Amazon
Medium
Machine Learning Engineer

LLM Fundamentals: Tokenization Design and KL-Regularized SFT

LLM Fundamentals: Tokenization Design and KL-Regularized SFT You are interviewing for a research/ML role on a team that trains and fine-tunes large la...

Machine Learning
6
0
81 people solved
Jun 18, 2026
Mistral AI logo
Mistral AI
Medium
Machine Learning Engineer

Answer an LLM Systems Quick-Fire Interview

You are given a rapid-fire LLM systems interview. Be prepared to explain Transformer architecture, attention and masking, multi-head attention, normal...

Machine Learning
3
0
30 people solved
Jul 2, 2026
Salesforce logo
Salesforce
Medium
Software Engineer

Design a Venue Rental and Booking System (HLD)

Design a venue / facility rental system that lets organizers — schools, clubs, and event organizers — discover and rent out physical venues. Venues ar...

System Design
3
0
38 people solved
Jun 30, 2026
Lyft logo
Lyft
Medium
Data Scientist Locked

Investigate a 7% Monthly Active Riders Drop and a 20% Wait-Time Increase

You are a data scientist on the rider growth team at a ride-hailing company. During a routine business review, two separate metric movements are flagg...

Analytics & Experimentation
20
0
158 people solved
Jun 6, 2026
Ramp logo
Ramp
Medium
Software Engineer

Design a Bank Account OOP Simulation with Transfers, Payments, and Merges

Design an object-oriented banking simulation. Accounts can be created, balances can be queried, money can be transferred, payments can be recorded, an...

Software Engineering Fundamentals
1
0
27 people solved
Jul 2, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design a Library Management System (API and Schema)

Design the API and database schema for a library management system. The library lends physical books to registered members. Members can search the cat...

System Design
10
0
90 people solved
Jun 14, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Design a Distributed Key-Value Store

Design a horizontally scalable distributed key-value store. The system stores opaque values keyed by a string key and supports get, put, and delete on...

System Design
13
0
99 people solved
Jun 11, 2026
Stripe logo
Stripe
Hard
Software Engineer Locked

Debug Validation Error Aggregation

You are working in a Python schema-validation library modeled on Colander. A schema is a tree of nodes; each node can run multiple validators. When va...

Software Engineering Fundamentals
110
0
851 people solved
May 14, 2026
Ramp logo
Ramp
Medium
Software Engineer

Design a Low-Latency Hotel Room Availability System

Design a hotel room availability service for a travel marketplace similar to Expedia. The key requirement is low-latency availability reads. Users sho...

System Design
3
0
26 people solved
Jul 2, 2026
Harvey logo
Harvey
Medium
Software Engineer

Project Deep Dive + Core-Values Behavioral Round

Project Deep Dive + Core-Values Behavioral Round This round has two parts within a single 60-minute session: a ~45-minute deep dive on a technically c...

Behavioral & Leadership
6
0
63 people solved
Jun 20, 2026
Notion logo
Notion
Medium
Software Engineer Locked

Design a Todo List Object Model

Design the object-oriented model for a todo list application. The product should allow a user to: - Create multiple todo lists or projects. - Create t...

Software Engineering Fundamentals
26
0
350 people solved
Jun 1, 2026
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