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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Netflix logo
Netflix
Hard
Data Engineer Locked

Explain concurrency and reliability tradeoffs

This question evaluates skills in concurrent programming (thread-safety, synchronization primitives, memory visibility and lazy initialization) and di...

Software Engineering FundamentalsConcurrencyConsistency & Availability
6
0
76 people solved
Dec 13, 2025
PayPal logo
PayPal
Medium
Software Engineer

Contrast TCP vs UDP; detect loss

Contrast TCP vs UDP; detect loss Contrast TCP and UDP in reliability, ordering, congestion control, connection setup, and overhead. How does TCP detec...

Coding & Algorithms
7
0
63 people solved
Aug 7, 2025
Fidelity logo
Fidelity
Medium
Software Engineer

Describe Java 8 features

Describe Java 8 features What are the key new features introduced in Java 8? Explain when and how you would use lambda expressions, the Stream API, Op...

Coding & Algorithms
5
0
50 people solved
Jul 31, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a basic task management system

Design a Simple Task Management Service Requirements Design a simple task management system that supports: 1. Add a new task with a unique ID and desc...

System Design
10
0
69 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Data Scientist

Design Metrics to Measure Inappropriate Content Severity and Prevalence

Design Metrics to Measure Inappropriate Content Severity and Prevalence Harmful-Content Detection: Measurement Plan and Experiment Design Objective Yo...

Analytics & Experimentation
4
0
34 people solved
Aug 4, 2025
PayPal logo
PayPal
Medium
Data Scientist

Design and Analyze A/B Test for Cashback Program

Design and Analyze A/B Test for Cashback Program A/B Test Design: Checkout Cashback Program (PayPal) Scenario PayPal plans to launch a checkout cashba...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
5
0
91 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Solve Four Online Assessment Problems

Complete the following four independent coding tasks. For each task, write a function that returns the requested result. 1. Find the best value index ...

Coding & AlgorithmsGrids & MatricesIntervals & Scheduling
12
0
100 people solved
Mar 19, 2026
Nexon logo
Nexon
Easy
Product Manager

Walk Through Your Background and Motivation

For a Nexon Product Manager interview, prepare answers to common background and motivation questions. You may be asked to walk through your background...

Behavioral & Leadership
6
0
68 people solved
Jan 27, 2025
Lyft logo
Lyft
Easy
Software Engineer

Reconstruct a BST from Preorder Traversal

Problem Given the preorder traversal of a binary search tree containing unique integers, reconstruct the tree and return its root. Function Contract I...

Coding & Algorithms
5
1
43 people solved
Apr 14, 2026
Transunion logo
Transunion
Medium
Data ScientistIntern

Describe past project experience clearly

You are interviewing for a Data Scientist Intern role in an asynchronous video interview format. Prepare concise, structured responses to the followin...

Behavioral & Leadership
6
0
61 people solved
Apr 1, 2026
Jefferies logo
Jefferies
Easy
Data Scientist

How to compute correlation from variances

Statistics Prompt: Compute Correlation from Variances You have two random variables \(X\) and \(Y\). You are told: - \(\mathrm{Var}(X+Y)\) - \(\mathrm...

Statistics & Math
6
0
48 people solved
Jul 3, 2025
NewsBreak logo
NewsBreak
Medium
Software Engineer Locked

Find Optimal Piecewise Constant Regression Parameters

This Machine Learning question evaluates parameter estimation and model selection for a one-split piecewise constant regression model, testing underst...

Machine Learning
2
0
30 people solved
Apr 10, 2026
UiPath logo
UiPath
Medium
Machine Learning Engineer

Handle Ambiguity in the Workplace

Handle Ambiguity in the Workplace Behavioral: Managing Ambiguity and Changing Requirements Context For a Machine Learning Engineer technical screen, b...

Behavioral & Leadership
4
0
59 people solved
Aug 7, 2025
Current logo
Current
Medium
Software Engineer

Solve transaction aggregation and search tasks

Solve transaction aggregation and search tasks Complete the following coding tasks: (a) Given a list of transactions, each with userId and amount (cre...

Coding & AlgorithmsBinary Search
6
0
99 people solved
Jul 31, 2025
Walmart Labs logo
Walmart Labs
Medium
Product ManagerIntern

Tell me about leadership challenges

Prepare for common Product Manager internship behavioral questions. Build a set of concise, reusable stories that show ownership, communication, prior...

Behavioral & Leadership
4
0
62 people solved
Jul 10, 2024
Meta logo
Meta
Hard
Product Manager

Define Meta Pay Success

Meta Pay is a payments product used across Meta's ecosystem. Define how you would determine whether Meta Pay is successful, then make a product priori...

Product / Decision Making
4
0
39 people solved
Feb 22, 2024
Adobe logo
Adobe
Medium
Software Engineer

Implement scalable word count locally

Write a function that reads a very large text file and outputs the frequency of each word. Define your tokenization and normalization rules (case fold...

Data Manipulation (SQL/Python)
1
0
25 people solved
Sep 6, 2025
PayPal logo
PayPal
Medium
Data ScientistSenior+ Locked

Why does the CLT matter?

The question evaluates a candidate's understanding of the Central Limit Theorem and related competencies in probabilistic reasoning, estimation, and c...

Statistics & Math
6
0
50 people solved
Mar 14, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Answer Behavioral Leadership Questions

This question evaluates leadership and behavioral competencies for a software engineering role, including ownership, judgment, communication, prioriti...

Behavioral & Leadership
4
0
67 people solved
Apr 7, 2026
Meta logo
Meta
Easy
Data Scientist

Design and evaluate a new group call feature

Product / DS Case: Group Calls for Messenger Groups Messenger has Groups but does not currently support group calls. You are evaluating whether to bui...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
11
0
97 people solved
Dec 8, 2025
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