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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Data Scientist

Optimize Travel Costs and Generate Rotational Symmetric Numbers

Scenario You are building a travel-search engine that must 1) show customers the cheapest round-trip they can book if departure and return prices vary...

Coding & Algorithms
11
0
83 people solved
Aug 4, 2025
Stripe logo
Stripe
Medium
Data Scientist Locked

Design a hierarchical forecast for transactions

Design an end-to-end daily forecast of gross merchandise volume for every country and industry segment over the next 90 days, with segment forecasts t...

Machine Learning
8
0
60 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Troubleshoot a website outage with disk full

This question evaluates operational incident response and systems troubleshooting skills, including understanding of disk/storage behavior, log and me...

Software Engineering Fundamentals
4
0
57 people solved
Jan 5, 2026
PayPal logo
PayPal
Medium
Data Scientist

Influence Stakeholders Without Authority: Strategies and Examples

Influence Stakeholders Without Authority: Strategies and Examples Behavioral Interview (Onsite) — Data Scientist at PayPal Prompt You are in a hiring‑...

Behavioral & LeadershipLeadership & InfluenceAmbiguity & Decision Making
13
0
114 people solved
Aug 4, 2025
Lyft logo
Lyft
Medium
Software Engineer

Describe a failure and learning

Behavioral Question: Learning from Failure (Software Engineering) Describe a project where you failed or missed key objectives: 1. What happened? Prov...

Behavioral & LeadershipFailure & Learning
11
0
93 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Design a distributed tree node counter

Design a distributed tree node counter Distributed Tree Node Count with Two Messages You are given an N-ary tree of machines (one process per node). E...

System DesignDistributed Coordination
60
0
544 people solved
Jul 26, 2025
Google logo
Google
Medium
Software Engineer

Handle overwhelmed team as senior manager

Handle overwhelmed team as senior manager Behavioral: Leading an Overloaded Engineering Team Context You are a senior engineering leader. Your softwar...

Behavioral & Leadership
4
0
72 people solved
Aug 8, 2025
BlackRock logo
BlackRock
Medium
Data Engineer

Solve two interval array problems

You are given two interval-based tasks from a technical screen for a data engineering role. 1. Merge overlapping intervals - Input: an array of int...

Coding & AlgorithmsIntervals & Scheduling
13
1
152 people solved
Feb 18, 2026
Google logo
Google
Medium
Data Scientist

Build and evaluate bad-link classifier

You have 1,000 URLs labeled as bad or good and a much larger unlabeled pool, with bad links rare. Design features and train a logistic regression. Exp...

Machine LearningSupervised LearningModel Evaluation
7
0
114 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Machine Learning EngineerSenior+

Solve matrix components, median, and traversals

1) Binary matrix component: Given an m x n grid of 0s (background) and 1s (objects), return the size of the largest connected component where connecti...

Coding & Algorithms
7
0
95 people solved
Aug 11, 2025
PayPal logo
PayPal
Easy
Data Scientist

Write SQL for top drivers and cancellation rates

Question You work on a rideshare / ride-hailing product that connects drivers and riders, with a focus on airport pickups. Using SQL, answer the quest...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
11
0
152 people solved
Dec 7, 2025
Stripe logo
Stripe
Medium
Data Scientist Locked

Quantify impact without an A/B test

Design an analysis that estimates the causal revenue lift of a payment-success change already live for merchants in one region, with no A/B test, one ...

Analytics & Experimentation
2
0
28 people solved
Oct 13, 2025
Amazon logo
Amazon
Easy
Software Engineer Locked

Describe Work Beyond Your Formal Responsibilities

Prepare a behavioral example about taking useful action beyond your formal responsibilities without bypassing owners or abandoning existing commitment...

Behavioral & Leadership
7
0
55 people solved
Jul 7, 2026
Scale AI logo
Scale AI
Easy
Software Engineer Locked

Connect Your Hardest Project to Your Interest in a Role

Create a concise self-introduction that connects verified interest in a company and role to your hardest recent project. Demonstrate personal ownershi...

Behavioral & Leadership
5
0
70 people solved
Jul 2, 2026
Gusto logo
Gusto
Medium
Data Scientist

How do you test two variants vs control?

You ran an A/B/n experiment with 1 control and 2 treatment variants. The primary metric is conversion rate (each user either converts or not within th...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
13
0
115 people solved
Nov 30, 2025
PayPal logo
PayPal
Medium
Data Scientist

Write SQL to flag Venmo ATO

SQL case: You are a Decision Scientist on Venmo’s Fraud (ATO) team. Using the schema and sample data below, write a single Standard SQL query that ret...

Data Manipulation (SQL/Python)
2
0
23 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Handling an Ambiguous "Family Tree" Prompt

Behavioral/Leadership: Handling an Ambiguous "Family Tree" Prompt Context: In a technical screen, the interviewer says only "there is a family tree" a...

Behavioral & Leadership
4
0
86 people solved
Aug 10, 2025
Salesforce logo
Salesforce
Medium
Machine Learning EngineerSenior+

Build a concurrent site crawler

Implement a small crawler in Python for a single target website. Requirements: - Input: a start URL, a maximum crawl depth, and an output CSV path. - ...

Coding & AlgorithmsConcurrencyAPI Integration & HTTP Clients
11
0
109 people solved
Jan 12, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design locker allocation service

Design a Best-Fit Locker Assignment Component Context You are designing the locker-assignment component for a Locker OS used at physical locker banks ...

System Design
5
0
83 people solved
Sep 6, 2025
Asana logo
Asana
Medium
Software Engineer

Find frequent IPs from a huge file

You are given a very large log file (too large to fit in memory). Each line contains an IPv4 address (e.g., 203.0.113.7). Design an approach to answer...

Software Engineering FundamentalsHeaps & Priority Queues
49
0
392 people solved
Jan 7, 2026
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