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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Simulate Alternating Stick Collection for a Nest

This Hudson River Trading coding question evaluates simulation logic, turn alternation, and state updates across a sequence of collection decisions. I...

Coding & Algorithms
7
1
93 people solved
Jul 2, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Rearrange Digits Without Adjacent Sums Above Nine

Rearrange every occurrence in a digit string so each adjacent pair sums to at most nine. Return the lexicographically smallest valid arrangement, pres...

Coding & Algorithms
8
0
94 people solved
Jul 31, 2026
Bloomberg logo
Bloomberg
Hard
Software EngineerSenior+ Locked

Detect Recent Duplicate Records with Bounded Memory

Detect repeated text-title pairs in a time-ordered record stream within an inclusive recent window. Emit pairs against the most recent matching record...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
13
1
125 people solved
Jul 1, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Explain Embeddings, Positive Labels, and Retraining in a Recommendation Project

Explain Embeddings, Positive Labels, and Retraining in a Recommendation Project Discuss a content-recommendation project you worked on. Explain the pa...

Machine LearningRecommendation SystemsAnnotation & Label Quality
0
0
10 people solved
Sep 12, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Count Complete Tic-Tac-Toe Game Sequences

Count every legal Tic-Tac-Toe move sequence that completes a game from a reachable board and specified next player. Treat different move orders as dis...

Coding & Algorithms
14
0
107 people solved
Jul 10, 2026
Ro.Co logo
Ro.Co
Medium
Machine Learning EngineerSenior+

Debug an inaccurate patient-message triage classifier service and write up fixes

This is a one-hour take-home exercise for a senior applied AI engineering role at a telehealth company. A service classifies incoming patient messages...

Machine LearningModel EvaluationDebugging
0
0
6 people solved
Sep 22, 2026
Harvey logo
Harvey
Medium
Software Engineer

Implement a Formula Spreadsheet

Design and implement a small in-memory spreadsheet. The spreadsheet must support cell labels such as A1 and B10, where a label consists of uppercase l...

Coding & AlgorithmsData Structure DesignGraphs
18
1
229 people solved
Apr 11, 2026
Zoox logo
Zoox
Medium
Backend Engineer Locked

Design a Pricing Service with Reliable Payment Handling

Design pricing and payment orchestration emphasizing idempotency, reconciliation, and failure handling rather than supply-demand matching. Connect req...

System Design
5
0
49 people solved
Aug 6, 2026
Voleon logo
Voleon
Medium
Software Engineer

Simulate an exchange and participation-rate trading

Implement a simplified trading simulation in three parts. Part 1 — Process market data / exchange interaction (order book) Design a minimal limit-orde...

Coding & AlgorithmsTrading SystemsData Structure Design
115
0
935 people solved
Dec 9, 2025
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design a Prompt Sharing Product

Design a prompt-sharing product with private and public flows, stable versions, permissions, attribution, remixing, revocation, and safe execution. Pr...

System DesignSystem Design Fundamentals
46
0
313 people solved
Jul 8, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Multi-Agent Collision Simulator (Unicycle Kinematics)

This question tests practical coding ability in robotics simulation, specifically implementing unicycle kinematics and discrete-time modeling via forw...

Coding & Algorithms
4
0
76 people solved
Jun 21, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Count Machines and Recover a Distributed Tree Topology

Design a distributed tree protocol that counts machines and reconstructs all nodes and edges without a central inventory. Specify correlation-bound ag...

Software Engineering FundamentalsDistributed Transactions & IdempotencyFault Tolerance & Failover
39
0
455 people solved
Jul 3, 2026
Whatnot logo
Whatnot
Hard
Software Engineer Locked

Remove All Adjacent Duplicate Pairs

Repeatedly remove equal adjacent character pairs until a Unicode string becomes stable. Use a stack-like single pass to expose newly adjacent duplicat...

Coding & Algorithms
8
0
81 people solved
Jul 14, 2026
Capital One logo
Capital One
Medium
Software Engineer

Find the First Array Element Smaller Than Both of Its Neighbors

Given an array of integers, find the first element, scanning from left to right, whose two adjacent neighbors are both strictly larger than it. Functi...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Aug 4, 2026
Cursor logo
Cursor
Hard
Software Engineer

Implement a Merkle-tree repo diff

You are given two snapshots of a source-code repository on disk, each represented by a root directory path. Implement a Merkle tree over the directory...

Coding & AlgorithmsTrees
42
0
435 people solved
Feb 14, 2026
Google logo
Google
Hard
Software EngineerSenior+ Locked

Infection Spread on a Grid (Cellular Automaton)

This question tests a candidate's ability to implement and optimize a synchronous cellular automaton simulation on a 2D grid, assessing proficiency in...

Coding & Algorithms
19
0
125 people solved
Jun 14, 2026
Google logo
Google
Medium
Software Engineer Locked

Build Prefix Lookup with a Trie

Practice a Google coding interview problem focused on build prefix lookup with a trie. The prompt emphasizes edge cases, clean implementation, and ver...

Coding & Algorithms
13
2
81 people solved
Jul 3, 2026
Karat logo
Karat
Medium
Software Engineer

Implement obstacle-course run statistics

You are given a TypeScript codebase for tracking race results on an obstacle course. - A Course has a fixed number of obstacles. - A Run stores the ti...

Coding & AlgorithmsProbability
20
0
203 people solved
Apr 12, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design One-to-One Chat

Design a scalable one-to-one chat system. Scope: - Only direct one-to-one messaging is required. - Group chat, public channels, workspace features, an...

System DesignReal-Time SystemsMessaging & Event-Driven
53
1
484 people solved
Mar 2, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimize trade PnL table updates

This question evaluates understanding of incremental aggregation and state management, including handling overlapping predicates, caching expensive or...

Coding & AlgorithmsData Structure Design
50
0
532 people solved
Feb 18, 2026
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