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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
Instacart logo
Instacart
Medium
Data Scientist

Prioritize conflicting tasks under shifting deadlines

Behavioral: Prioritizing Three Critical Requests Under a One‑Day Constraint Scenario You have 8 hours today and no backup. Three concurrent deliverabl...

Behavioral & Leadership
8
0
71 people solved
Oct 13, 2025
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Implement an in-memory file system

This question evaluates a candidate's ability to design and implement in-memory file system data structures and APIs, covering hierarchical directory ...

Coding & AlgorithmsData Structure DesignTrees
15
0
187 people solved
Jan 6, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+

Maximum stock trading profit with at most two buy-and-sell transactions

You are given a list prices, where prices[i] is the price of one share of a stock on day i. You may complete at most two transactions, where a transac...

Coding & AlgorithmsDynamic Programming
1
0
11 people solved
Apr 3, 2026
Coursera logo
Coursera
Hard
Backend Engineer

Implement Popular and Ranked Voting

You are given ranked ballots in aggregated form. Each key is an ordered tuple of candidate names representing one voter's preference from highest to l...

Coding & Algorithms
5
0
78 people solved
Jan 30, 2026
The Trade Desk logo
The Trade Desk
Medium
Software EngineerSenior+ Locked

Calculate Bowling Game Score

This question evaluates a candidate's ability to implement rule-based scoring logic, array processing, and stateful iteration to correctly aggregate f...

Coding & Algorithms
3
0
49 people solved
Jun 2, 2026
Meta logo
Meta
Medium
Data Scientist

Compute French DAU video-call percentage yesterday

Compute the percentage of daily active users (DAU) from France who were on at least one video call yesterday (2025-08-31 UTC). DAU is defined as users...

Data Manipulation (SQL/Python)
2
0
21 people solved
Oct 13, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer Locked

Predict most likely next word from training data

This question evaluates proficiency in frequency-based language modeling and data-structure design, focusing on token sequence analysis, frequency cou...

Coding & AlgorithmsNatural Language ProcessingData Structure Design
14
0
134 people solved
Feb 9, 2026
Thumbtack logo
Thumbtack
Hard
Data Scientist

Design streaming new-vs-returning monthly metrics

Streaming design: Monthly NEW vs RETURNING request shares (event-time, with late/out-of-order and duplicates) Context You receive a high-volume event ...

Coding & AlgorithmsBatch & Stream ProcessingData Ingestion & CDC
10
0
94 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Compute sparse dot product and count islands

You are asked to solve two coding problems. Problem 1: Sparse vector dot product Given two vectors A and B of the same length n (potentially large, e....

Coding & Algorithms
5
0
81 people solved
Feb 11, 2026
Meta logo
Meta
Hard
Machine Learning Engineer

Design scalable media storage and delivery

System Design: Global UGC Photos and Short Videos Store/Delivery Context Design a globally distributed system to store and deliver user-generated phot...

System Design
10
0
69 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Improve Profile Completion Rate

Increasing LinkedIn Profile Completion Profile completeness affects members' visibility in search, job matches, recruiter outreach, and trust. Assume ...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
33
0
115 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Solve frequency and tree-completeness problems

These two problems evaluate competency in frequency counting and selection algorithms for identifying top-k elements and in binary tree structure anal...

Coding & Algorithms
5
0
75 people solved
Feb 12, 2026
Apple logo
Apple
Medium
Data Scientist Locked

Explain CNN shapes, params, and trade-offs

This question evaluates understanding of convolutional neural network tensor shapes, parameter counts and multiply–accumulate (MAC) calculations, rece...

Machine Learning
7
0
88 people solved
Oct 13, 2025
Harvey logo
Harvey
Medium
Product Manager

Opening PM behavioral: your current team, your scope on it, and why this role fits

An interviewer opens a product manager interview with two questions about your background and your motivation. Answer both. Clarifying Questions - Do ...

Behavioral & LeadershipMotivation & Fit
1
0
12 people solved
Sep 12, 2024
TikTok logo
TikTok
Medium
Data Scientist

Maximize products bought under budget

Given N products and M customers, for each customer find the list of distinct products they can buy without exceeding their budget such that the numbe...

Coding & Algorithms
6
0
92 people solved
Oct 13, 2025
Google logo
Google
Easy
Software Engineer

Describe conflict, ambiguity, and process improvement

Prepare STAR-style responses for these behavioral prompts: - Tell me about a time you had a conflict with your manager. - Tell me about a time you imp...

Behavioral & Leadership
11
0
84 people solved
Jan 1, 2026
Airbnb logo
Airbnb
Medium
Product Manager

Post-pandemic travel rebound: go-to-market plan for a new travel offering

Assume the COVID-19 pandemic has come to an end and travel is reopening. How would you plan the launch of a travel product for this moment? Cover what...

Product Design & StrategyRequirements & Launch ExecutionLaunch Evaluation
1
0
26 people solved
Apr 25, 2024
DoorDash logo
DoorDash
Medium
Data Scientist

Evaluate Impact of $1 Fee on Fast-Food Profitability

Evaluate Impact of $1 Fee on Fast-Food Profitability Experiment Design: $1 Delivery-Fee Surcharge on Unprofitable Restaurants Scenario About 10% of fa...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
13
0
154 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Data Scientist

Derive no-click probability and sketch implications

Click Probability Across Repeated Impressions Context: We show A impressions of the same item to a user. Unless otherwise stated, each impression is a...

Statistics & Math
3
0
61 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Segment a message with width-constrained suffixes

Given a message string s and an integer width W, split s into consecutive segments and append a suffix "i/n" to each segment indicating its 1-indexed ...

Coding & Algorithms
7
0
67 people solved
Sep 6, 2025
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