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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
LinkedIn logo
LinkedIn
Medium
DevOps EngineerSenior+ Locked

Explore an Unknown Grid and Return a Robot Path

Design a robot algorithm that explores an initially unknown finite grid and returns a shortest traversable path from the start to a known target, or r...

Software Engineering Fundamentals
5
0
40 people solved
Aug 1, 2026
Harvey logo
Harvey
Medium
Machine Learning Engineer Locked

Implement a Spreadsheet With Formulas

This question evaluates understanding of data structures and algorithms for dependency management, expression parsing and evaluation, and detection of...

Coding & Algorithms
10
0
89 people solved
Jun 1, 2026
Pinterest logo
Pinterest
Medium
Data ScientistSenior+

Evaluate Fresh Content and Video Experiments

Pinterest wants to improve the perceived freshness and engagement of the home feed. Answer the following interview questions: 1. Define a practical me...

Analytics & ExperimentationExperiment Analysis & ReadoutExperiment Design (A/B Testing)
40
0
270 people solved
Jan 22, 2026
Imc logo
Imc
Medium
Data ScientistIntern Locked

Managing a Research Project End to End

Explain how you take an ambiguous research question through planning, data validation, execution, review, and a decision-ready handoff with limitation...

Behavioral & Leadership
4
0
31 people solved
Aug 14, 2026
Amazon logo
AmazonJuspayGoogleBloomberg

Also asked at Google, Bloomberg

Medium
Software Engineer

Choose a Shared Reachable Node Minimizing the Worse Distance

Problem A directed graph has nodes 0 through n - 1, each with at most one outgoing edge. edges[i] is its destination, or -1 if there is none. Find a n...

Coding & AlgorithmsGraphs
1
0
9 people solved
Salesforce logo
Salesforce
Medium
Product Manager

Phasing an 18-Month Product Build to Stay Competitive in the Meantime

You are the product manager for a new product. Your team estimates that building it properly will take 18 months, but the competition will not wait: b...

Product Design & StrategyRoadmapping & PlanningMarket & Competitive Analysis
0
0
12 people solved
Jul 10, 2026
Asana logo
Asana
Medium
Software Engineer Locked

Design a jigsaw puzzle (OOD)

This question evaluates object-oriented design skills, including class and relationship modeling, state and behavior encapsulation, validation logic, ...

Software Engineering FundamentalsLow-Level Design (OOP)
41
0
288 people solved
Jan 22, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Maximize Money in K Consecutive Bags

Practice an interval-window problem that asks for the richest run of k consecutive weighted bags on a sparse infinite line.

Coding & Algorithms
17
1
146 people solved
Jun 1, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Retain Top K Elements

Given a list of integers nums and an integer k, return a new list formed from the original list after removing every element except the k largest elem...

Coding & Algorithms
9
0
65 people solved
Apr 17, 2026
Meta logo
Meta
Hard
Data Scientist

Compute High-Call Usage Rates

You are given two tables for a voice-calling product: users - user_id BIGINT - country_code STRING calls - call_id BIGINT - caller_id BIGINT - recipie...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
9
0
77 people solved
Mar 4, 2026
Roblox logo
Roblox
Easy
Machine Learning Engineer

Find the Most Frequent Log Call

You are given a sequence of application log entries. Each entry contains the name of a function or API call made by the system. Write a function that ...

Coding & AlgorithmsArrays & Strings
22
0
179 people solved
Feb 1, 2026
Whatnot logo
Whatnot
Medium
Software Engineer Locked

Design an Online Coding Contest Platform

This question evaluates a candidate's ability to design a scalable, secure System Design for an online coding contest platform with emphasis on safely...

System DesignSandboxing & IsolationJob Scheduling & Workflows
13
0
151 people solved
Apr 7, 2026
Airbnb logo
Airbnb
Medium
Machine Learning EngineerSenior+

Solve Decimal Coin Change

Given a list of coin denominations represented as decimal values and a target amount represented as a decimal value, return the minimum number of coin...

Coding & Algorithms
11
0
108 people solved
Apr 28, 2026
Uber logo
Uber
Medium
Data Scientist

Convert a PDF to a CDF

Given a continuous random variable X with probability density function f(x), write code or describe an algorithm to construct its cumulative distribut...

Coding & AlgorithmsProbability
15
0
118 people solved
Jan 14, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Build an LRU Cache with a Hash Map and Linked List

Build an LRU cache from a hash map and doubly linked list, supporting recency-changing reads, updates, and precise least-recently-used eviction at fix...

Coding & AlgorithmsData Structure DesignLinked Lists
18
0
124 people solved
Aug 11, 2026
Netflix logo
Netflix
Hard
Software Engineer

Design demand-side ads relational tables

You are designing the core relational data model for a demand-side advertising system. Create a normalized schema (tables + key columns + relationship...

Software Engineering FundamentalsSystem Design Fundamentals
47
0
385 people solved
Mar 9, 2026
Meta logo
Meta
Medium
Software Engineer

Design an in-memory database with TTL and history

Design and implement an in-memory key–field–value store with monotonic timestamps. Keys and fields are strings; values are integers. Provide these API...

Coding & AlgorithmsData Structure DesignKey-Value Stores
21
0
228 people solved
Sep 6, 2025
Jane Street logo
Jane Street
Medium
Software Engineer

Calculate win chance in three-player dice game

Probability of Winning with Rerolls on Ties Setup - Three players: A (you), B, and C. - A fair six-sided die is used. - B and C have already rolled an...

Statistics & MathProbability
98
1
745 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Product Manager

WhatsApp Ads vs. Retention: Deciding How Much Monetization Is Worth the Churn Risk

You are a product manager at WhatsApp. Leadership wants more advertising revenue from the app, and the expectation is that showing more ads will lower...

Product / Decision MakingGrowth & MonetizationExperiment Design (A/B Testing)
1
0
14 people solved
Jul 5, 2026
Apple logo
Apple
Medium
Product Manager

Using AI to Make an Internal Business Intelligence Team at Apple More Effective

An Apple interviewer brings up one of the company's internal business intelligence (BI) teams and asks how AI could make that team more effective in i...

Product Design & StrategyAI Product Management
0
0
10 people solved
Jul 24, 2026
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