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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
Moody's logo
Moody's
Medium
Software Engineer Locked

Design a Product Inventory and Pricing Service

Design a read-heavy product, price, and inventory service that remains fast for browsing without weakening checkout correctness. The exercise compares...

System Design
2
0
33 people solved
Jul 25, 2026
Zynga logo
Zynga
Medium
Product Manager

Zynga Product Sense: Pitch One New Feature for a Game You Play Often

You are interviewing for a product manager role at Zynga, the mobile game publisher. Choose a game you love to play and, acting as its product manager...

Product Design & StrategyProduct Design & ImprovementProduct Sense
0
0
6 people solved
Jul 26, 2026
Tesla logo
Tesla
Medium
Software Engineer

How to Identify Best Battery Group

You have historical quality data for batteries that were randomly assigned to one of 5 groups. Each battery then goes through 3 different quality test...

Machine LearningHypothesis Testing
34
0
259 people solved
Oct 26, 2025
Harvey logo
Harvey
Medium
Product Manager

PM Behavioral: Walk Through a Launch You Led, From Problem to Proven Impact

In a product manager interview you are asked to describe one product or feature launch you drove that turned out to be a success. Pick the launch and ...

Behavioral & LeadershipProject Deep DiveLaunch Evaluation
1
0
12 people solved
Jul 11, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Design a Food-Delivery Backend (Uber Eats-style)

This system design question tests a candidate's ability to architect a large-scale, multi-actor backend involving geospatial matching, real-time data ...

System DesignGeo & Delivery SystemsReal-Time Systems
31
0
323 people solved
Jun 23, 2026
Yahoo logo
Yahoo
Hard
Data Scientist

Diagnose a 10% DAU drop

On-Call Incident: Yahoo Mail DAU Down 10% on 2025-09-01 Assume all times are UTC, the product is global, and DAU is the canonical daily active user me...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
12
0
101 people solved
Oct 13, 2025
PayPal logo
PayPal
Medium
Machine Learning Engineer

Search a word in a grid

Given a 2D grid of characters and a target word, determine if the word can be traced by moving up, down, left, or right, using each cell at most once....

Coding & Algorithms
6
0
72 people solved
Sep 6, 2025
HubSpot logo
HubSpot
Easy
Software Engineer

Find a special person using knows(a,b)

Problem You are given n people labeled 0 to n-1 at a party. You can call an API: - knows(a, b) -> bool: returns true if person a knows person b, other...

Coding & AlgorithmsGraphs
18
0
136 people solved
Dec 15, 2025
TikTok logo
TikTok
Medium
Software EngineerIntern Locked

Reconstruct a binary tree from traversals

This question evaluates understanding of binary tree traversal properties, data structure manipulation, and algorithmic complexity involved in reconst...

Coding & Algorithms
8
0
66 people solved
Jan 11, 2026
Capital One logo
Capital One
Medium
Data Scientist

Audit flight data quality from metadata

You’re given an airline on‑time dataset and a one‑page “Metadata” slide that claims: flight_date (string, local time), dep_time/arr_time (HHMM local),...

Data Manipulation (SQL/Python)
4
0
40 people solved
Oct 13, 2025
Spotify logo
Spotify
Medium
Product Manager

Spotify Product Strategy: Deciding Whether to Back Listener Interaction in Podcasts

You are a product manager at Spotify. The company is weighing whether to put resources into interactive podcasts: shows that listeners can take part i...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
1
0
10 people solved
Sep 13, 2026
Meta logo
Meta
Medium
Software Engineer

Design a Scalable Post, Feed, and Search Service

Design a Scalable Post, Feed, and Search Service Design a social-post service with three core capabilities: a user can publish a text post, retrieve a...

System Design
1
0
20 people solved
Mar 2, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Reverse Nodes in K-Sized Groups

This question evaluates skills in manipulating singly linked lists, pointer reassignments, and performing in-place group transformations while meeting...

Coding & Algorithms
1
0
24 people solved
Jun 3, 2026
Microsoft logo
Microsoft
Medium
Data Scientist

Implement rotated array binary search with duplicates

Given an integer array nums that is a non-decreasing array rotated an unknown number of times. Duplicates may exist. Implement a function that returns...

Coding & AlgorithmsBinary Search
10
0
116 people solved
Oct 13, 2025
Citadel logo
Citadel
Hard
Software Engineer

Discuss queues, NoSQL, and concurrency

System Design Concepts: Messaging, Storage Choices, and Concurrency Context: You are designing distributed services that communicate via events and mu...

System DesignMessaging & Event-DrivenStorage & Sharding
27
0
217 people solved
Sep 6, 2025
Point72 logo
Point72
Medium
Machine Learning Engineer

Design a News-Filtering Prompt

You are acting as the coach of an Olympic champion. The athlete receives many news articles every day, and you want to use a large language model to f...

Machine Learning
6
0
55 people solved
Jan 21, 2026
Google logo
Google
Medium
Data Scientist

Estimate b when features exceed samples

Consider the linear model y = Xb + ε with X ∈ R^{n×(m+1)} including an intercept. a) Derive the OLS estimator b̂ = (XᵀX)^{-1}Xᵀy, stating the rank con...

Machine LearningRegression & Statistical ModelingML Fundamentals
17
0
123 people solved
Oct 13, 2025
Google logo
Google
Medium
Product Manager

Google Maps Product Sense: Helping Drivers Find Parking Near Their Destination

You are a product manager on Google Maps. Getting directions to a place is easy, but many driving trips still end with the hard part: finding somewher...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
8 people solved
Jun 10, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Find least active countries

This question evaluates proficiency in SQL-based data manipulation and analytics, focusing on time-based filtering, distinct aggregation, grouping, th...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
5
1
54 people solved
Feb 22, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Implement an LRU Cache

This question evaluates competency in designing efficient stateful data structures, understanding cache eviction policies (least recently used), and m...

Coding & Algorithms
2
0
37 people solved
Apr 12, 2026
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