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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
Capital One logo
Capital One
Medium
Data Scientist

Write SQL to quantify outage revenue loss

A database outage blocked premium membership registrations from 2025-01-01 to 2025-03-31 (inclusive). Members intend to start on intended_start_date, ...

Data Manipulation (SQL/Python)
1
0
33 people solved
Oct 13, 2025
Anthropic logo
Anthropic
Hard
Machine Learning Engineer

Design a scalable service and model performance

System Design: Multi-Region, 50k QPS, p95 < 100 ms Context Design an online, read-heavy key-value service (for example, a user profile or feature look...

System DesignKey-Value StoresConsistency & Availability
18
0
362 people solved
Aug 14, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Construct tree from inorder & postorder

Question LeetCode 106. Construct Binary Tree from Inorder and Postorder Traversal – Given the inorder and postorder traversal arrays of a binary tree,...

Coding & Algorithms
13
0
116 people solved
Aug 4, 2025
Reddit logo
Reddit
Easy
Data Scientist Locked

Design A/B test for AI chat box

This question evaluates skills in experimental design, product analytics, metrics selection, and causal inference relevant to a Data Scientist role in...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
15
0
151 people solved
Dec 11, 2025
Zoom logo
Zoom
Medium
Product Manager

Zoom Product Sense: Make Video Calls Feel More Human and Get Everyone Involved

You are interviewing for a product manager role at Zoom. Design a new Zoom feature that helps video meetings feel more human and personal, and gets th...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
7 people solved
Sep 19, 2026
Dispatch logo
Dispatch
Easy
Software Engineer

Fetch Public S3 Object Metadata

In Node.js, using AWS SDK for JavaScript v3, write a program that accesses the public S3 bucket coderbytechallengesandbox in region us-east-1 without ...

Software Engineering FundamentalsAPI Integration & HTTP ClientsCloud Platforms
14
0
98 people solved
Apr 5, 2026
LinkedIn logo
LinkedIn
Easy
Data Scientist

Compute article-type diversity per user and histogram

You track article views and article metadata. Tables article_views - user_id INT - article_id INT - view_date DATE articles - article_id INT (PK) - ar...

Data Manipulation (SQL/Python)SQL
12
0
92 people solved
Feb 1, 2026
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
Intersystems logo
Intersystems
Easy
Software EngineerNew Grad

Find the longest palindromic substring

Problem Given a string s, find the longest contiguous substring of s that is a palindrome (reads the same forward and backward). Input - A string s co...

Coding & Algorithms
5
0
69 people solved
Feb 11, 2026
MongoDB logo
MongoDB
Medium
Software EngineerSenior+

Summarize background, challenge project, and failure

Behavioral & Leadership Screen — Software Engineer (Hiring Manager Round) This is a hiring-manager technical screen. After a brief warm-up, the interv...

Behavioral & LeadershipProject Deep DiveFailure & Learning
17
0
251 people solved
Sep 6, 2025
Google logo
Google
Medium
Data ScientistSenior+

Implement Fibonacci with efficiency constraints

Write a function fib(n) that returns the nth Fibonacci number (0-indexed: fib(0)=0, fib(1)=1). Requirements: - Handle n up to at least 10^6. - Discuss...

Coding & Algorithms
14
2
128 people solved
Nov 24, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Design a fitness tracking app

This question evaluates a candidate's competency in designing end-to-end backend architectures, specifying core APIs, modeling workout and geospatial ...

System Design
9
0
75 people solved
Mar 12, 2026
Shopify logo
Shopify
Medium
Machine Learning Engineer

Build model to predict package delivery time

You are building an ML model to predict package delivery time (ETA) for shipments. Given historical shipping data (order created time, origin/destinat...

Machine LearningML System DesignFeature Engineering
25
0
228 people solved
Feb 18, 2026
Amazon logo
Amazon
Medium
Software Engineer

Find Valid IP Addresses in Files

You are given an absolute or relative path to a directory on the local file system. Write a program that recursively traverses every subdirectory unde...

Coding & AlgorithmsArrays & Strings
45
0
355 people solved
Apr 28, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer

Design LinkedIn Learning course recommendations

Design a mini ML system to recommend LinkedIn Learning courses to a user. Product goal: - Recommend courses that help the user succeed in their job se...

ML System Design
14
0
127 people solved
Feb 18, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL to compare social-only vs game-only engagement

You are given two tables capturing Oculus app usage. Define an 'active day' as a UTC date on which a user generates at least one event. Consider only ...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
45
1
382 people solved
Oct 13, 2025
Remitly logo
Remitly
Medium
Software Engineer

Solve k-Nearest Places by Latitude/Longitude

Given a set of geographic coordinates and a query point, return the k nearest locations. Describe how you compute great-circle distance (e.g., Haversi...

Coding & Algorithms
20
0
163 people solved
Aug 13, 2025
Apple logo
Apple
Medium
Data Engineer Locked

Design TikTok Data Engineering Systems

This question evaluates data engineering competencies including scalable streaming ingestion, processing orchestration, data partitioning and failure ...

System DesignETL & Data PipelinesBatch & Stream Processing
15
0
116 people solved
Jan 30, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Check a Palindrome While Ignoring Case and Punctuation

Check whether a string is a palindrome after ignoring punctuation and letter case while retaining ASCII letters and digits.

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
13
1
89 people solved
Aug 30, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design a blob storage system for lunar environment

You are asked to design a blob storage system deployed on a lunar base. The interviewer is intentionally making the environment unusual (the Moon) to ...

System DesignFile & Media StorageConsistency & Availability
16
0
215 people solved
Dec 8, 2025
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