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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Turn-Based Monster Battles

This question evaluates the ability to implement a turn-based battle simulation with correct state management, turn semantics, knockout handling, dama...

Coding & AlgorithmsSimulation & State MachinesData Structure Design
24
0
198 people solved
Mar 9, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Find the Most Frequent IP Addresses in a File Too Large for Memory

Design an exact, bounded-memory method for finding the most frequent IP addresses in a file far larger than RAM. Analyze memory and disk-I/O trade-off...

Software Engineering FundamentalsSorting
11
0
90 people solved
Jun 17, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Compute Plant Infection Time

This question evaluates a candidate's understanding of graph traversal and grid-based state propagation, including concepts like breadth-first search,...

Coding & Algorithms
12
0
129 people solved
May 24, 2026
Rippling logo
Rippling
Medium
Software Engineer

Design expense rules engine and return type

Design a Rules Engine for Corporate Card Expenses Context We offer a corporate credit card that employees use for business expenses. Managers set poli...

System DesignLow-Level Design (OOP)API Design
202
0
1882 people solved
Aug 7, 2025
Headway logo
Headway
Medium
Software EngineerSenior+ Locked

Design a Rental Search and Booking Platform from Startup to Scale

Design a short-term rental search and booking platform that can evolve from a startup architecture to large-scale traffic. Balance fast, possibly stal...

System Design
14
0
101 people solved
Jun 15, 2026
Jump Trading logo
Jump Trading
Easy
Software Engineer Locked

Largest Subset With Positive Bitwise AND

Find the largest subset of integers whose bitwise AND is positive under the stated constraints. Cover edge cases and complexity, then consider follow-...

Coding & Algorithms
3
0
62 people solved
Jun 14, 2026
Decagon logo
Decagon
Medium
Software Engineer

Design a Single-Domain Chatbot

Design a chatbot system for a single enterprise customer and a single business domain. For example, the chatbot may answer support questions for one p...

ML System DesignSystem Design FundamentalsRetrieval-Augmented Generation
33
0
374 people solved
Mar 9, 2026
Stripe logo
Stripe
Medium
Software Engineer

Process auth requests with fraud rules

Question Implement a function that, given a list of Authorization Requests (timestamp_seconds, unique_id, amount, card_number, merchant), outputs a hu...

Coding & Algorithms
89
0
352 people solved
Jul 29, 2025
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Scale Duplicate File Detection

This question evaluates system-design, performance-diagnosis, and distributed-systems competencies, focusing on identifying bottlenecks through measur...

System DesignFile & Media StorageFault Tolerance & Failover
47
0
588 people solved
May 9, 2026
Fireworks Ai logo
Fireworks Ai
Medium
Software Engineer Locked

Find global GPU idle intervals

This question evaluates competency in interval reasoning, managing overlapping time ranges across distributed resources, designing online data structu...

Coding & AlgorithmsIntervals & SchedulingData Structure Design
26
0
362 people solved
Jan 6, 2026
Pinterest logo
Pinterest
Hard
Machine Learning Engineer

Implement Naive Bayes classifier from scratch

Implement a Naive Bayes classifier from scratch (you may use NumPy). Write a class with: - fit(X, y): estimate class priors and feature likelihood par...

Machine LearningML CodingSupervised Learning
10
1
150 people solved
Feb 9, 2026
Wayfair logo
Wayfair
Medium
Applied Scientist

Rank Homepage Modules for an E-Commerce Product

Design a ranking system for modules on an e-commerce homepage. Candidate modules include trending products and seasonal or holiday sales. Focus on the...

ML System DesignMetrics & KPIsExperiment Design (A/B Testing)
0
0
5 people solved
Sep 10, 2026
Wells Fargo logo
Wells Fargo
Hard
Data ScientistIntern

Organizing Code and Repositories: Functions, Classes, Comments, GitHub Files

When you write code, how do you organize it into functions, classes and files? Do you write comments, and what do they say? When you upload a project ...

Software Engineering FundamentalsCode Quality & Maintainability
0
0
1 people solved
Oct 6, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Determine Whether Two Integers Sum to a Target

Determine whether two integers at distinct indices sum to a target, including the case where equal values occur twice. Validate all inputs, avoid muta...

Coding & Algorithms
7
0
61 people solved
May 15, 2026
Perplexity logo
Perplexity
Medium
Data Scientist Locked

Implement Stratified Sampling by Country

This question evaluates understanding of stratified sampling, proportional allocation across groups, reproducible random sampling, data grouping and e...

Coding & AlgorithmsSampling & Estimation
9
0
120 people solved
Apr 9, 2026
Capital One logo
Capital One
Medium
Software Engineer

Sorted Sums of Absolute Differences Over All Cyclic Shifts of an Array

You are given two integer arrays nums1 and nums2 of the same length n. For each shift t from 0 to n - 1, rotate nums1 cyclically by t positions and ad...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Aug 4, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Find a Path Between Nodes in a Fibonacci Tree

Practice a Databricks coding interview problem focused on find a path between nodes in a fibonacci tree. The prompt emphasizes edge cases, clean imple...

Coding & Algorithms
7
0
74 people solved
May 30, 2026
Scribd logo
Scribd
Medium
Software Engineer

Many-to-Many Schema Design With a Join Table, Composite Primary Key, and Queries

Design the relational tables for a many-to-many relationship, including a join table with a composite primary key, and then write queries against the ...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance
0
0
14 people solved
Sep 4, 2026
Riotgames logo
Riotgames
Easy
Software Engineer Locked

Trace a Web Page Load Through the Browser

Explain what happens when a browser opens a web address, from networking through HTML/CSS parsing, DOM and CSSOM construction, JavaScript compilation,...

Software Engineering Fundamentals
1
0
15 people solved
Aug 26, 2026
Scale AI logo
Scale AI
Medium
Software Engineer

Update a Neuron Grid

You are given an m x n integer matrix neurons. - A cell is a firing neuron if its value is 0. - A cell is a non-firing neuron if its value is greater ...

Coding & AlgorithmsSimulation & State Machines
14
1
268 people solved
Feb 22, 2026
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