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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
Product Manager

Designing Layered Safeguards That Stop Harmful Uploads on a Social Platform

You are a product manager at a social media platform. How would you keep "bad" content from being uploaded in the first place? `hint Not all bad conte...

Product Design & StrategyTrust & Safety
1
0
11 people solved
Aug 3, 2025
PayPal logo
PayPal
Medium
Data Scientist

Identify Users with Specific Page Visit Sequence

page_visits +------------+---------+---------+----------+ | date | user_id | page_id | ts | +------------+---------+---------+----------+ ...

Data Manipulation (SQL/Python)
58
0
26 people solved
Jul 12, 2025
Snapchat logo
Snapchat
Hard
Data Scientist

Design and analyze a banner A/B test

A/B Test Design: Home-Page Banner You are deciding whether to add a home-page banner in a consumer app. Design and analyze the A/B test end-to-end. As...

Analytics & Experimentation
8
0
75 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Find minimum cycle cost per node

This question evaluates proficiency in graph algorithms and algorithmic optimization, specifically reasoning about weighted directed graphs, cycle cos...

Coding & AlgorithmsGraphs
10
0
111 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Product Manager

Metrics Framework for Instagram's Account Verification Badge

You are the product manager who owns verification on Instagram: the badge shown next to an account's name to confirm that the account really belongs t...

Analytics & ExperimentationMetrics & KPIsCausal Inference
0
0
8 people solved
Mar 3, 2026
Google logo
Google
Medium
Product Manager

Product Design of a Machine Translation API Offering at Google

You are a product manager at Google. Design a translation API: a service that software calls to translate content from one language into another. Expl...

Product Design & StrategyPlatform & API ProductsAI Product Management
0
0
6 people solved
Feb 25, 2026
Medium
Software EngineerNew Grad Locked

Count Grid Paths Without Three Consecutive Moves

Count monotone grid paths that use exact numbers of right and up moves without ever taking three identical moves in a row. Address empty and one-direc...

Coding & Algorithms
3
0
46 people solved
Jul 28, 2026
Meta logo
Meta
Medium
Software Engineer

Solve island connectivity and string multiplication

Question Given N distinct islands (e.g., a, b, c…) and a list of existing undirected paths between them, compute the minimum number of additional path...

Coding & Algorithms
13
0
83 people solved
Jul 29, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Design read-heavy org chart subordinate counts

You are given manager→direct-report relationships for an organization (an employee has at most one direct manager; the top-level employee has none). B...

System DesignTreesData Structure Design
13
0
120 people solved
Feb 7, 2026
Xiaopeng logo
Xiaopeng
Medium
Software Engineer Locked

Maintain the Median of a Data Stream

Process a stream of integers and return the median after every insertion. Work through the function contract, boundary cases, correctness argument, an...

Coding & Algorithms
3
0
25 people solved
Jul 22, 2026
Medium
Software Engineer

Explain Encapsulation through an Object Invariant

What is data encapsulation in Java, and how does it help keep an object valid? Give a concrete example rather than only listing private fields, getter...

Software Engineering FundamentalsLow-Level Design (OOP)Programming Languages
0
0
8 people solved
Jan 14, 2026
Apple logo
Apple
Medium
Software EngineerNew Grad

How would you handle an unresponsive teammate?

Scenario You are working on a project with a hard deadline. A teammate who owns a critical task has become unresponsive (misses standups, does not rep...

Behavioral & LeadershipConflict & CollaborationOwnership & Execution
14
0
127 people solved
Nov 27, 2025
Google logo
Google
Hard
Software EngineerNew Grad Locked

Simulate In-Place Cellular State Updates

This question evaluates a candidate's ability to implement grid-based state transitions and manage in-place updates with strict space constraints, ass...

Coding & Algorithms
19
1
116 people solved
May 4, 2026
Google logo
Google
Hard
Data Scientist

Experimentally evaluate jogging-route recommendations

Design an Evaluation for Jogging Route Recommendations in Maps Objective Design an A/B test and evaluation framework for recommending optimal jogging ...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing
15
0
174 people solved
Oct 13, 2025
Chime logo
Chime
Medium
Data Scientist

Decide launch with CPA-profit trade-offs by segment

You receive an Excel with segment-level metrics for an A/B feature test. Decide whether to launch the feature for all users, only a segment, or not at...

Analytics & Experimentation
10
0
94 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Engineer

Validate carpool capacity

Question LeetCode 1094. Car Pooling – Given trips[i] = [numPassengers, start, end] and an integer capacity, return true if the vehicle can fulfill all...

Coding & AlgorithmsIntervals & Scheduling
9
0
128 people solved
Aug 4, 2025
Roblox logo
Roblox
Hard
Data Scientist

Design ad revenue A/B with guardrails

Mobile App Ads Marketplace: Experiment Plan to Lift Revenue by 10% in 60 Days Context You run a mobile app ads marketplace. Target is to increase ad r...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
8
0
113 people solved
Oct 13, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Determine minimal substitutions and removals

Question Given a list of words, determine the minimum number of character substitutions required so that, in every word, no two adjacent characters ar...

Coding & Algorithms
24
0
100 people solved
Jul 29, 2025
Goldman Sachs logo
Goldman Sachs
Hard
Machine Learning Engineer

Evaluate TPR/FPR, sigmoid, and activations

You have a 70-minute assessment with several ML-fundamentals multiple-choice questions. Answer the following (show calculations where applicable). 1) ...

Machine Learning
5
0
88 people solved
Oct 10, 2025
LinkedIn logo
LinkedIn
Easy
Machine Learning Engineer Locked

Explain overfitting vs underfitting and fixes

This question evaluates understanding of model generalization in supervised machine learning, focusing on the concepts of overfitting and underfitting...

Machine LearningML FundamentalsModel Evaluation
14
0
153 people solved
Feb 8, 2026
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