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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
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a simple greeting-card web app

This question evaluates a candidate's ability to design a minimal web application architecture for an MVP greeting-card service, covering frontend/bac...

System Design
10
0
131 people solved
Feb 11, 2026
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist

Identify Causes and Solutions for Fashion Profit Decline

Identify Causes and Solutions for Fashion Profit Decline Timed Case: Fashion Retail Profit Decline — Diagnose and Recommend Context You are analyzing ...

Analytics & ExperimentationBusiness Case AnalysisMetric Diagnostics
70
0
287 people solved
Aug 4, 2025
Optiver logo
Optiver
Easy
Software Engineer

Compute permutations with repeated letters

Counting Strings with Repeated Characters Problem Given two nonnegative integers m and n, how many distinct strings can be formed that contain exactly...

Statistics & MathMath & Number Theory
16
1
149 people solved
Aug 13, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Test classifier difference with McNemar's test

Paired Comparison of Two Classifiers via McNemar's Test You evaluated two classifiers, A and B, on the same 10,000 labeled examples. Because both mode...

Statistics & Math
6
0
99 people solved
Oct 13, 2025
eBay logo
eBay
Medium
Data AnalystIntern Locked

Diagnose Declining Email Click-Through Rate

This question evaluates a data analyst's competency in metric definition and validation, funnel-based diagnostics, segmentation analysis, distinguishi...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
31
0
214 people solved
May 28, 2026
NVIDIA logo
NVIDIA
Medium
Product Manager

Forecasting the next major shifts in the data industry and what they mean for products

Give your point of view on how the data landscape is changing. What are the next big shifts, and why do you expect them? `hint Reason from drivers Sta...

Product Design & StrategyMarket & Competitive AnalysisProduct Strategy
0
0
10 people solved
Jun 3, 2026
Google logo
Google
Medium
Software Engineer Locked

Find Shortest Queue with Few Calls

This question evaluates algorithm design and analysis skills, focusing on working with restricted data structure APIs and minimizing total operations ...

Coding & AlgorithmsStacks & Queues
11
2
135 people solved
Apr 10, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Optimize a compute kernel with a simulator

Performance Optimization Plan for a Compute Kernel Context You are given: - A compute kernel (single critical function or set of loops) to optimize. -...

System Design
23
0
318 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Validate a simplified numeric string

Implement isValidNumber (s) that returns true if and only if the ASCII string s represents a valid number under these simplified rules: - Optional lea...

Coding & Algorithms
8
0
102 people solved
Aug 12, 2025
Zomato logo
Zomato
Medium
Product Manager

Choose a Zomato app feature to retire or rebuild and justify the call

As a product manager at Zomato, pick one feature in the existing app that you would either retire or redesign. Explain which feature you chose and why...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
9 people solved
Jun 8, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design file deduplication across nested directories

Design and implement a file deduplication tool that, given a root directory, identifies groups of duplicate files. Requirements: traverse nested direc...

Coding & AlgorithmsFile & Media Storage
31
0
292 people solved
Aug 14, 2025
Applied Intuition logo
Applied Intuition
Medium
Machine Learning Engineer

Implement and explain positional encoding

Implement Positional Encodings for a Transformer Language Model You are building a Transformer-based language model. Transformers are permutation-equi...

Machine LearningTransformers & AttentionML Coding
19
0
178 people solved
Sep 6, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design event timeout detector

Design and implement an event-timeout detector for a job scheduler. Inputs: a global timeout T and a stream of events; each event has {event_id, type ...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
14
1
209 people solved
Jul 17, 2025
PayPal logo
PayPal
Easy
Data Scientist Locked

Write SQL using HAVING and window functions

This question evaluates SQL data manipulation competency, focusing on aggregation filtering with HAVING and the use of window functions for running co...

Data Manipulation (SQL/Python)SQL
11
0
93 people solved
Jan 17, 2026
Walmart Labs logo
Walmart Labs
Easy
Software EngineerSenior+ Locked

Design aggregator for multiple downstream services

This question evaluates system-design and distributed-systems skills, focusing on microservice aggregation, fan-out/fan-in concurrency, fault toleranc...

System Design
15
0
117 people solved
Dec 9, 2025
Meta logo
Meta
Hard
Data Engineer

Compute Max Score From Up to 3 Categories

You are implementing a scoring function for a library summer reading program. Each book a student read is represented as a tuple (category: str, point...

Coding & Algorithms
11
0
96 people solved
Dec 2, 2025
Circle logo
Circle
Medium
Software Engineer

Design payment scheduler with cancel and top-K outgoing

Design and implement an in-memory banking payment component with the following APIs: ( 1) schedulePayment(payerId, payeeId, amount, executeAt) -> paym...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
23
0
187 people solved
Aug 1, 2025
Jane Street logo
Jane Street
Medium
Quantitative Trader

Two Opaque Boxes: Place or Take for Maximum Expected Payoff

You are playing a one-player game with two opaque boxes, both of which start empty. The game lasts exactly 100 turns, and on every turn you must choos...

Coding & Algorithms
9
0
127 people solved
Aug 3, 2025
Meta logo
Meta
Hard
Machine Learning Engineer Locked

Machine Learning Fundamentals: Optimizers, Scaling Laws, and Clustering

This question evaluates conceptual grasp of core machine learning fundamentals: gradient-based optimizers, neural scaling laws, and unsupervised clust...

Machine LearningNeural Networks & TrainingUnsupervised Learning
19
0
250 people solved
Jun 27, 2026
xAI logo
xAI
Medium
Software Engineer

Define and compare smart pointers

What is a smart pointer? How do smart pointers manage ownership and lifetimes compared with raw pointers? Describe common types (unique, shared, weak)...

Coding & AlgorithmsMemory ManagementProgramming Languages
9
0
171 people solved
Aug 12, 2025
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