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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
Roblox logo
Roblox
Easy
Data Scientist Locked

Rank features using logistic regression coefficients

This question evaluates understanding of feature scaling, interpretation of logistic regression coefficients as feature importance, and awareness of h...

Machine Learning
11
0
79 people solved
Oct 3, 2025
Qualcomm logo
Qualcomm
Medium
Software Engineer

Compute the Diameter of an Undirected Tree

Compute the Diameter of an Undirected Tree You are given an undirected tree with nodes numbered from 0 through n - 1. The diameter is the number of ed...

Coding & Algorithms
3
0
28 people solved
Apr 16, 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
Amazon logo
Amazon
Hard
Data Scientist

Design causal study for reminder impact

Observational Causal Study: Reminder Program With Staggered Market × Channel Launch Context You are evaluating the causal impact of medication-subscri...

Analytics & Experimentation
6
0
66 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Software Engineer Locked

Implement multiple coding round problems

This multi-part question evaluates algorithmic problem-solving skills including efficient lookup/search, stable ordering and priority management, stre...

Coding & AlgorithmsParsing & InterpretersBinary Search
20
0
204 people solved
Jan 1, 2026
Meta logo
Meta
Medium
Data Scientist

Design pre-launch plan and cluster A/B test

A Facebook feature ('More like this' button that surfaces similar products) is being considered for Instagram, but it has not launched on Instagram. Y...

Analytics & Experimentation
4
0
54 people solved
Oct 13, 2025
Kayak logo
Kayak
Medium
Product Manager

Kayak User Data Deep Dive & Solution Proposal

Product Case: Booking Website Interaction Analysis in Five Slides You have access to an anonymized clickstream dataset from a travel booking website c...

Product / Decision Making
5
0
37 people solved
Jul 4, 2025
Capital One logo
Capital One
Easy
Data Scientist

Derive E[X^2] from mgf e^{t^2}

Identify Distribution and Compute E[X^2] from an MGF You are given a random variable X with moment-generating function (mgf): - M_X(t) = E[e^{tX}] = e...

Statistics & Math
4
0
76 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Success of B2C Chat App with Key Metrics

Evaluate Success of a B2C Chat App with Key Metrics A data scientist is asked to define how to evaluate the overall success of a business-to-consumer ...

Analytics & Experimentation
7
0
40 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Software EngineerSenior+

Set up a Python interview environment

You can use AI coding tools. Prepare a clean laptop for a Python-based onsite and explain your steps: ( 1) Install pyenv and set up a project-specific...

Data Manipulation (SQL/Python)Programming Languages
11
0
84 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Data Scientist

Design experiments under network interference

A/B Test Design for Search-Ranking in a Two-Sided Marketplace with Interference Context You need to evaluate a change to the search-ranking algorithm ...

Analytics & Experimentation
4
0
35 people solved
Oct 13, 2025
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
Meta logo
Meta
Medium
Data Scientist

Decide under adverse signals and conflicts

Scenario: Pre-Launch Decision Under Mixed Signals You are preparing to launch a new messaging/notifications feature. Leading indicators are mixed: som...

Behavioral & Leadership
6
0
56 people solved
Oct 13, 2025
Instacart logo
Instacart
Hard
Data Scientist Locked

Contrast Lasso vs Ridge trade‑offs

This question evaluates a Data Scientist's understanding of regularization methods (L1/Lasso, L2/Ridge, Elastic Net), their bias–variance trade-offs, ...

Machine LearningRegression & Statistical ModelingML Fundamentals
10
0
91 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Software Engineer

Design an e-commerce price tracking service

Design a backend system for an e-commerce price-tracking service. Users can track products from a large online retailer, view historical prices, and r...

System Design
2
0
37 people solved
Mar 23, 2025
Meta logo
Meta
Medium
Software Engineer

Compare two string linked lists

Question Given two singly linked lists where each node stores one character as a string, determine whether the sequences of characters represented by ...

Coding & Algorithms
8
0
31 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Data Scientist

Redesign an executive dashboard for C-suite

Redesign a Spaghetti Chart into an Executive Dashboard Context You are handed a single slide for the C‑suite that shows a spaghetti chart of regional ...

Analytics & Experimentation
3
0
46 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Answer feedback, conflict, and failure questions

Behavioral Questions Prepare structured answers (use STAR: Situation, Task, Action, Result) for: 1. Giving constructive feedback: Tell me about a time...

Behavioral & LeadershipConflict & CollaborationFailure & Learning
11
0
111 people solved
Jan 2, 2026
Medium
Data Scientist

Decide goal under ambiguity

Choose the Primary Goal for a New Subscriber-Only Benefit You are the PM/data lead for a subscription product planning a new subscriber-only benefit. ...

Behavioral & Leadership
4
0
43 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Machine Learning Engineer Locked

Solve two linked list/array tasks

This two-part question evaluates proficiency with fundamental data structures and algorithmic problem-solving—specifically linked list manipulation an...

Coding & AlgorithmsLinked ListsBinary Search
3
0
75 people solved
Dec 14, 2025
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