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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
Hex logo
Hex
Medium
Software Engineer Locked

Design a Notebook App That Synchronizes Notes

Design a notebook web app that keeps local edits responsive while synchronizing through an unreliable external notes API. Address retries, idempotency...

System Design
3
0
52 people solved
Jul 15, 2026
OpenAI logo
OpenAI
Medium
Android Engineer Locked

Design Mobile Model Usage Quotas

This question evaluates a candidate's ability to design a server-backed quota system and its Android client integration, covering API contract design,...

System DesignRate LimitingMobile Architecture & Performance
22
0
340 people solved
May 3, 2026
Snapchat logo
SnapchatGoogleAmazon

Also asked at Amazon, Meta, Goldman Sachs, TCS, Bloomberg, Microsoft, EPAM Systems, Yandex, Apple, Morgan Stanley, Walmart Labs, IBM, Deloitte, Oracle, JPMorgan Chase, LinkedIn, Zoho, NVIDIA

Medium
Software Engineer

Find index of first unique character

Find index of first unique character Given a string s, return the index of the first character that appears exactly once; if none exists, return -1. A...

Coding & Algorithms
13
0
98 people solved
Datadog logo
Datadog
Medium
Software Engineer Locked

Build span trees from unordered trace spans

This question evaluates skill in reconstructing hierarchical relationships from unordered span records, testing understanding of tree structure assemb...

Coding & AlgorithmsTrees
36
0
286 people solved
Feb 12, 2026
Versemedical logo
Versemedical
Medium
Software Engineer Locked

Build a Paginated Provider Search Backend and React Filter UI

Build a paginated provider search feature spanning a PostgreSQL query, backend route, and React interface. The question tests safe optional filters, n...

Software Engineering Fundamentals
12
0
87 people solved
Jul 1, 2026
Apple logo
Apple
Medium
Machine Learning EngineerNew Grad

Design a multimodal RAG assistant

Prompt Design a Retrieval-Augmented Generation (RAG) system that can answer user questions using an internal knowledge base containing multiple modali...

System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
28
0
276 people solved
Dec 15, 2025
Voleon logo
Voleon
Hard
Machine Learning EngineerNew Grad Locked

Explain ML and statistical modeling

This question evaluates mastery of machine learning and statistical modeling concepts including class-imbalance strategies, loss function behavior and...

Machine LearningML FundamentalsRegression & Statistical Modeling
21
1
279 people solved
Feb 15, 2026
Google logo
Google
Medium
Product Manager

Google Product Sense: Choosing the Launch Product for a New Art Platform

You are a product manager at Google and have been asked to create a platform devoted to art for the people who already use Google's products. Decide w...

Product Design & StrategyProduct Sense
0
0
8 people solved
Sep 12, 2026
TikTok logo
TikTok
Medium
Software Engineer

Design low-latency large-scale hotel booking system

You are asked to design the backend for a large-scale hotel booking system that runs behind a very high-traffic consumer app (think a TikTok-like app ...

System DesignSystem Design FundamentalsStorage & Sharding
24
0
229 people solved
Nov 12, 2025
Intuit logo
Intuit
Medium
Software Engineer Locked

Produce valid student lineup from parent array

This question evaluates understanding of rooted tree hierarchies, parent-before-child ordering constraints, and lexicographic minimality when construc...

Coding & AlgorithmsTreesHeaps & Priority Queues
19
0
137 people solved
Feb 11, 2026
Cresta logo
Cresta
Medium
Machine Learning Engineer

Implement greedy and beam decoding

Implement Greedy and Beam Search Decoders over Next-Token Probabilities Context You are given a directed token graph represented as a Python dictionar...

Machine LearningLLM Applications
90
0
746 people solved
Sep 6, 2025
Omnissa logo
Omnissa
Medium
Software Engineer Locked

Prioritize Two Important Tasks with Competing Deadlines

Practice prioritizing two important tasks when deadlines, stakeholders, and risks compete. The response evaluates impact and dependencies, presents co...

Behavioral & Leadership
2
0
28 people solved
Sep 4, 2026
Capital One logo
Capital One
Medium
Product Manager

Bringing Virtual Card Numbers to Capital One Debit and Credit Customers Across Teams

You are a product manager at Capital One, asked to bring virtual card numbers to the bank's debit and credit card customers. Explain how you would wor...

Product Design & StrategyRequirements & Launch ExecutionConflict & Collaboration
4
0
31 people solved
Jun 21, 2025
Jain Global logo
Jain Global
Easy
Data Scientist Locked

Define the p-Value, Then Explain How to Test Two Price Series for Cointegration

Two statistics questions from a systematic trading screen: give a precise definition of the p-value and its common misreadings, then explain what coin...

Statistics & MathHypothesis TestingTime Series & Forecasting
1
0
21 people solved
Sep 4, 2026
Modular logo
Modular
Hard
Software Engineer

Find the Critical Path

You are given a project represented as a directed acyclic graph of tasks. Each task has: - a unique task name - a list of prerequisite task names - a ...

Coding & Algorithms
5
0
82 people solved
Apr 9, 2026
Whatnot logo
Whatnot
Medium
Data ScientistSenior+

Calculate Monthly Customer Retention

Calculate Monthly Customer Retention Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Schema orders | colum...

Data Manipulation (SQL/Python)
3
0
60 people solved
Mar 30, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Machine Learning Engineer Locked

Return Every Index Pair Whose Values Sum to a Target

Return every distinct pair of array indices whose values add to a target, including all valid combinations created by duplicates. Skills under review ...

Coding & AlgorithmsArrays & Strings
22
0
177 people solved
Aug 5, 2026
eBay logo
eBay
Medium
Software Engineer Locked

Find the Container with the Most Water

Given vertical-line heights, choose two positions that form a container with the x-axis and return the maximum water area permitted by their distance ...

Coding & Algorithms
5
0
51 people solved
Aug 5, 2026
Coreweave logo
Coreweave
Medium
Software EngineerSenior+

Implement web data fetch and storage tool

Problem You are asked to implement a small program that retrieves data from a remote web service protected by token-based authentication, parses the r...

Coding & AlgorithmsAPI Integration & HTTP Clients
33
0
485 people solved
Oct 11, 2025
DoorDash logo
DoorDash
Medium
Product Manager

Design what Ticketmaster buyers experience after checkout, from confirmation to event day

You are asked to design the post-checkout experience for Ticketmaster: everything a buyer sees and can do once a ticket purchase is confirmed. Explain...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
14 people solved
Jun 1, 2026
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