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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Google logo
Google
Medium
Software Engineer Locked

Determine whether two nodes are related

This question evaluates understanding of graph representations, reachability and connectivity concepts for ancestry relationships, including handling ...

Coding & AlgorithmsGraphs
40
2
273 people solved
Jan 22, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Time-Versioned Key-Value Store and Time-Window Event Counter

Build two small time-aware data structures. The first is a key-value store that keeps every value a key has had, each tagged with the timestamp at whi...

Software Engineering FundamentalsData Structure DesignBinary Search
1
0
17 people solved
Apr 28, 2026
HackerRank logo
HackerRank
Medium
Machine Learning Engineer

Build A Purchase-Intent Prediction Notebook

Build a machine learning notebook that predicts whether a user session will lead to a purchase. The training and test CSV files contain page counts, t...

Machine Learning
5
0
45 people solved
Apr 23, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Bloomberg, TikTok, Garena, Apple, Snapchat, Meta, Rokt, Tesla, Uber, DoorDash, IXL Learning, Yandex, Verkada, Adobe, Oracle

Medium
Software Engineer

Implement basic calculator

Implement an arithmetic-expression evaluator for nonnegative integer operands and the binary operators +, -, *, and /. Return the integer value of the...

Coding & Algorithms
14
0
102 people solved
Geico logo
Geico
Medium
Software Engineer

Design a Shared A/B/C Experiment Assignment API for an IVR Phone Platform

Design a shared experiment-assignment API service for an interactive voice response (IVR) platform, the automated phone system that answers customer c...

System DesignSystem Design FundamentalsExperiment Design (A/B Testing)
0
0
3 people solved
Sep 20, 2026
Google logo
Google
Medium
Software Engineer

Check if all substrings are anagrams of words

You are given a string s (letters only) and access to an English dictionary dict (a set of valid words). Return true if every contiguous substring of ...

Coding & AlgorithmsArrays & Strings
71
0
670 people solved
Mar 11, 2026
Discord logo
Discord
Medium
Software EngineerNew Grad

Demonstrate effective AI-assisted coding workflow

In an interview where you are allowed to use an AI coding assistant, you are given a large scoped task (e.g., implementing a TCP chat server). The int...

Software Engineering FundamentalsAI-Assisted DevelopmentTesting & Quality
20
0
406 people solved
Jan 27, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Solve path and inventory problems

This question evaluates algorithmic problem-solving skills around numeric robustness and stateful stream processing, specifically testing reasoning ab...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
22
0
140 people solved
Apr 3, 2026
OpenAI logo
OpenAI
Medium
Product Manager

How Context Window Length Shapes LLM Quality, Cost and Latency

What changes when a large language model's context window is made larger or smaller? `hint Follow each extra token Consider what the model has to comp...

Machine LearningAI Product ManagementTransformers & Attention
1
0
11 people solved
Apr 12, 2026
Amazon logo
AmazonGoogleBloomberg
Medium
Software Engineer

Fewest Keypresses After Remapping Letters That May Repeat

Fewest Keypresses After Remapping Letters That May Repeat You are given a string word of lowercase English letters. Letters may occur more than once. ...

Coding & AlgorithmsGreedySorting
0
0
8 people solved
Google logo
Google
Medium
Product Manager

Choosing Offline and Online Metrics to Evaluate a Generative AI Feature's Output

You are the product manager for an AI product whose core output is text generated by a large language model. How would you judge whether that generate...

Analytics & ExperimentationAI Product ManagementLLM Evaluation
1
0
14 people solved
Jun 16, 2026
Citadel logo
Citadel
Easy
Frontend Engineer Locked

Build a Real-Time Event Feed Dashboard

Build the React logic for a live event-feed dashboard with typed sections, newest-first ordering, rolling 30-second statistics, and pause/resume behav...

Software Engineering FundamentalsReact & UI FrameworksReal-Time Systems
17
0
164 people solved
Jul 24, 2026
Netapp logo
Netapp
Medium
Software Engineer Locked

Prioritize Several Simultaneous High-Priority Tasks

Explain how you prioritized several simultaneous high-priority engineering tasks, established a defensible order, communicated trade-offs, and adapted...

Behavioral & Leadership
2
0
26 people solved
Aug 9, 2026
Google logo
GoogleAmazon
Hard
Software Engineer

Answer Sorted Pair-GCD Position Queries

Problem Given a positive integer array nums, form one greatest common divisor for every pair of different positions (i, j) with i < j. Sort all those ...

Coding & AlgorithmsMath & Number TheoryBinary Search
0
0
9 people solved
Two Sigma logo
Two Sigma
Medium
Software Engineer

Solve capital selection and grid escape

Solve capital selection and grid escape Implement two functions for algorithmic practice: 1) MaximizeCapitalAfterProjects(k, initialCapital, requiredC...

Coding & AlgorithmsHeaps & Priority QueuesGreedy
21
0
283 people solved
Aug 9, 2025
Tesla logo
Tesla
Easy
Business Intelligence EngineerSenior+ Locked

Design an End-to-End Customer Delivery Experience Dashboard

A product analytics interview about designing an end-to-end delivery-experience dashboard. Candidates must connect executive health metrics to order-s...

Analytics & Experimentation
6
0
76 people solved
Jun 16, 2026
Roblox logo
Roblox
Medium
Machine Learning EngineerSenior+ Locked

Design a Game Recommendation System

This question evaluates mastery of designing scalable end-to-end machine learning recommendation systems, including candidate generation, multi-stage ...

ML System DesignRecommendation SystemsRanking Models
21
0
239 people solved
May 7, 2026
Rbcroyalbank logo
Rbcroyalbank
Easy
Data EngineerIntern

Describe ETL and pipeline challenges

Question You are interviewing for a Data Engineer co-op / intern role at RBC (Royal Bank of Canada). The technical screen is a set of resume-based and...

Behavioral & LeadershipETL & Data PipelinesData Quality & Validation
25
0
209 people solved
Jan 14, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design a scalable payment system

Design a scalable payment system Design a scalable payment system. The system must support both peer-to-peer money movement between users and merchant...

System DesignPayments & LedgersDistributed Transactions & Idempotency
122
0
878 people solved
Jul 15, 2025
xAI logo
xAI
Medium
Software Engineer

Design a Durable Key-Value Cache with File-System Persistence

Design and implement (at a discussion + light-code level — you will sketch the key functions but not run them) a durable in-memory key-value cache. Th...

System Design
12
0
127 people solved
Sep 21, 2025
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