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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
Meta logo
Meta
Medium
Software Engineer Locked

Return right and left side views of a tree

This question evaluates understanding of binary tree data structures and the competency to identify side views by reasoning about which node is visibl...

Coding & Algorithms
6
0
61 people solved
Jan 5, 2026
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
12
0
121 people solved
Jan 2, 2026
Capital One logo
Capital One
Medium
Data Scientist

Explain Shell Script for Python Virtual Environment Setup

Explain Shell Script for Python Virtual Environment Setup Scenario Shell script for setting up a Python virtual environment during a tech screen Quest...

Coding & Algorithms
43
0
306 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Implement weighted random index picker

Implement weighted random index picker Design a class WeightedPicker that is initialized with an array of positive integer weights w and supports pick...

Coding & Algorithms
4
0
48 people solved
Jul 15, 2025
Citadel logo
Citadel
Hard
Software EngineerSenior+ Locked

Choose models for trading tasks

This question evaluates a candidate's competency in selecting and reasoning about machine learning models for quantitative trading and pricing, includ...

Machine LearningML FundamentalsModel Evaluation
9
0
115 people solved
Jan 26, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

How do you decide with limited information?

Behavioral Question Describe a time you had to make an important decision with incomplete, ambiguous, or conflicting information. Include: - What deci...

Behavioral & LeadershipAmbiguity & Decision Making
14
0
111 people solved
Nov 26, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Derive expectation for two consecutive heads

Waiting Time Until First HH (Two Consecutive Heads) Setup Let T be the number of coin flips required until the pattern HH (two consecutive heads) appe...

Statistics & MathProbability
9
0
115 people solved
Oct 13, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Implement a nested object validator

Implement a helper function validate(object, required_style) that checks whether a possibly nested object matches a provided schema. The object may co...

Data Manipulation (SQL/Python)Parsing & Interpreters
19
0
266 people solved
Sep 6, 2025
Capital One logo
Capital One
Easy
Data Scientist

Compare average profit across mix scenarios

Burger Profit Mix — Scenario A vs. Scenario B Context: You sell two burger types (Regular and Vegan). In Scenario A, you sell only Regular. In Scenari...

Statistics & Math
5
0
62 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Applied Scientist Locked

Approach an ambiguous business problem

This question evaluates a candidate's ability to handle ambiguity in ML system design by assessing skills in stakeholder communication, problem scopin...

ML System Design
4
0
50 people solved
Dec 20, 2025
Glean logo
Glean
Medium
Software Engineer Locked

Prioritizing QA Work Under Deadline Pressure

This question evaluates a candidate's ability to prioritize testing work and manage quality risk when time is insufficient to cover everything before ...

Behavioral & Leadership
7
0
72 people solved
Jun 19, 2026
Upstart logo
Upstart
Easy
Data Scientist

Calculate Particle Survival Probability After Time t

Calculate Particle Survival Probability After Time t Radioactive-Decay Style Probability Context You have 100 identical, independent particles. Each p...

Statistics & MathProbability
10
0
148 people solved
Aug 4, 2025
Snapchat logo
Snapchat
Medium
Software Engineer

Handle cards, islands, Trie, median

Question LeetCode 914. X of a Kind in a Deck of Cards LeetCode 694. Number of Distinct Islands LeetCode 208. Implement Trie (Prefix Tree) LeetCode 295...

Coding & Algorithms
16
0
65 people solved
Jul 29, 2025
TikTok logo
TikTok
Medium
Product Manager

Digital Marketing Campaign ROI Analysis

Product Analytics Prompt: Allocate Budget Between Two TikTok Ad Creatives You are evaluating two TikTok ad creatives, Creative A and Creative B, each ...

Product / Decision MakingGrowth & MonetizationMetrics & KPIs
23
0
161 people solved
Jul 4, 2025
eBay logo
eBay
Medium
Software Engineer Locked

Format Words into Fixed-Width Lines

This question evaluates proficiency in string manipulation, greedy line-packing algorithms, and attention to implementation details such as spacing di...

Coding & Algorithms
5
0
41 people solved
May 1, 2026
Snowflake logo
Snowflake
Hard
Data Scientist

Implement DFS with cycle detection and topo order

Implement DFS (recursive and iterative) with topo sort, cycle detection, and timestamps You are given a directed graph G with N nodes labeled 1..N and...

Coding & AlgorithmsGraphsStacks & Queues
13
0
110 people solved
Oct 13, 2025
Stripe logo
Stripe
Medium
Product Manager

Airline Consortium Brief: Make Flying Feel Enjoyable on a One-Million-Dollar Budget

A consortium of airlines has hired you and handed you a budget of \$1 million. Your brief is to change the common perception that flying is not an enj...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
9 people solved
Aug 11, 2025
Apple logo
Apple
Hard
Data Scientist

Managing a Data Science Team: Priorities, Communication and Engineering Partnership

This data science role includes managing a team, and several interview conversations probe how you lead: how you manage the team, how you set prioriti...

Behavioral & LeadershipMentoring & Team GrowthCommunication & Stakeholders
0
0
3 people solved
May 2, 2026
Figma logo
Figma
Medium
Software Engineer

Share behavioral stories

Share behavioral stories Behavioral Interview Prompts for a Software Engineer (Technical Phone Screen) Context: In a technical phone screen focused on...

Behavioral & LeadershipAmbiguity & Decision MakingPrioritization & Tradeoffs
25
0
191 people solved
Aug 4, 2025
DoorDash logo
DoorDash
Easy
Software Engineer Locked

Design a Real-Time Monitoring System

This question evaluates a candidate's system design and distributed-systems competencies, focusing on scalable time-series ingestion, storage, query, ...

System Design
6
0
74 people solved
Jan 4, 2026
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