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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
Apple logo
Apple
Medium
Software Engineer

Explain your LLM project and contributions

Prior Experience Deep Dive (LLM) You mentioned you previously worked on an LLM-related research/project. Explain: - What problem you were trying to so...

Behavioral & LeadershipProject Deep DiveLLM Applications
10
0
111 people solved
Jan 17, 2026
Meta logo
Meta
Medium
Data Scientist

Calculate Response Rate and Compare User Survey Ratings

USERS user_id | signup_date 10 | 2024-03-20 11 | 2024-04-01 12 | 2024-04-05 ​ SURVEYS survey_id | user_id | sent_at 1 | 10 ...

Data Manipulation (SQL/Python)SQL
202
2
737 people solved
Jul 12, 2025
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Count a Distributed Tree with Nonblocking Messages

Design a nonblocking message protocol that lets a distributed tree compute its total node count. The discussion explores asynchronous state machines, ...

Software Engineering Fundamentals
4
0
46 people solved
May 24, 2026
Google logo
Google
Medium
Product Manager

Google Maps coverage gaps: designing a product that gets missing places onto the map

Some places still do not appear on Google Maps. Design a product that gets them mapped. `hint Define unmapped first Places can be missing for differen...

Product Design & StrategyProduct Design & Improvement
1
0
8 people solved
Jan 9, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Explain the Project You Are Most Proud Of

Prepare a project-pride behavioral interview answer that shows personal ownership, technical judgment, a meaningful course correction, and evidence of...

Behavioral & Leadership
2
0
41 people solved
Aug 3, 2026
Snapchat logo
Snapchat
Medium
Software Engineer Locked

Check if a binary tree is complete

This question evaluates understanding of binary tree properties and traversal techniques, testing competency in data structures and algorithmic reason...

Coding & Algorithms
10
0
74 people solved
Feb 8, 2026
Gemini logo
Gemini
Medium
Data Scientist

Lead a cross-team fraud incident response

Describe a specific time you led a high-severity ACH fraud incident from detection to resolution. Include: (1) the first on-call signal you saw, (2) t...

Behavioral & Leadership
3
0
51 people solved
Oct 13, 2025
Medium
Software Engineer

Lead a Project Deep Dive through Testing, Performance, and Production Issues

Walk through a project in enough detail to explain its end-to-end flow, testing, performance challenges, problems after launch, and the hardest part y...

Behavioral & LeadershipProject Deep DiveDebugging
0
0
4 people solved
May 11, 2026
Amazon logo
Amazon
Medium
Data Scientist

Optimize Email Strategy for New Prime Video Series Launch

Optimizing Email Strategy for a New Prime Video Series Launch You are designing, deploying, and evaluating ranking models and marketing emails for Pri...

Machine Learning
72
0
69 people solved
Jul 12, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Find and remove duplicate files

Given a directory tree that may not fit in memory, detect and optionally remove duplicate files. Define the algorithm, including how you handle very l...

Coding & AlgorithmsFile & Media StorageOperating Systems
35
0
267 people solved
Jul 26, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Minimum Bills and Coins to Make Change

This question tests a candidate's grasp of greedy algorithms applied to a classic coin-change problem with fixed denominations. It evaluates practical...

Coding & Algorithms
11
0
81 people solved
Jun 15, 2026
Meta logo
Meta
Medium
Machine Learning EngineerSenior+ Locked

Deep copy a linked list with random pointers

This question evaluates understanding of linked-list structures, pointer/reference manipulation, deep versus shallow copying, and the ability to analy...

Coding & AlgorithmsLinked Lists
5
0
89 people solved
Jan 22, 2026
PayPal logo
PayPal
Easy
Data Scientist

Evaluate smart cart idea and design experiment

Question Instacart is partnering with a local grocery store to introduce a smart cart in the physical store. While shopping in the partner store, a cu...

Analytics & Experimentation
6
0
74 people solved
Oct 10, 2025
Moloco logo
Moloco
Hard
Software Engineer

Find single element when others repeat k times

You are given a sorted array of integers nums in non-decreasing order, and an integer k ≥ 2. Every value in nums appears exactly k times in a row, exc...

Coding & Algorithms
11
0
83 people solved
Nov 9, 2025
Pilot logo
Pilot
Easy
Software EngineerNew Grad

Explain Python and Web Basics

In a software engineering interview, explain the following fundamentals: 1. In Python, what are the differences between a list and a tuple? When would...

Software Engineering Fundamentals
3
1
49 people solved
Jan 7, 2026
Microsoft logo
Microsoft
Medium
Product Manager

Product Sense: Designing an App Feedback Tool, From Capture to Triage and Action

Design a tool for collecting customer feedback about an app. Any app may serve as your example. Explain who the tool serves, which problems it solves,...

Product Design & StrategyProduct SenseMetrics & KPIs
0
0
8 people solved
Feb 17, 2026
Illumio logo
Illumio
Medium
Software Engineer Locked

Design a Moderated Messaging Service

This question evaluates system design competency, covering scalable distributed architecture, data modeling, API design, integration with external mod...

System Design
4
0
33 people solved
Oct 20, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Explain deadlock cases and how to prevent them

You are asked in an interview to discuss deadlocks in concurrent programming. 1) What is a deadlock? 2) What conditions must hold for a deadlock to be...

Software Engineering FundamentalsConcurrency
7
0
107 people solved
Feb 9, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Design an Online Minesweeper Platform

This question evaluates competency in designing scalable, low-latency, real-time stateful systems, covering data modeling, API design, persistence, co...

System DesignSystem Design FundamentalsMultiplayer Game Systems
6
0
64 people solved
Nov 17, 2025
CRED logo
CRED
Medium
Product Manager

Netflix Subscription Health: Picking Three Metrics to Run the Product On

As the product manager for Netflix's streaming service, you are asked which three metrics you would focus on above all others. Name them, define each ...

Analytics & ExperimentationMetrics & KPIs
0
0
10 people solved
Apr 21, 2026
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