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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
Pinterest logo
Pinterest
Medium
Data Analyst

Compute percent of first-cancelled users who never rebook

You are interviewing for a health-tech product analytics role. Assume the following table contains one row per appointment with its final status. Tabl...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
9
0
62 people solved
Nov 22, 2025
Meta logo
Meta
Easy
Data Scientist

Compute conditional occupancy across two rooms

Probability and Bayes Update: Two Rooms Setup There are two rooms. Prior over occupancy states: - With probability 1/3: both rooms are occupied. - Wit...

Statistics & Math
7
0
79 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Compute gala vs online break-even donors

A nonprofit must choose one of two fundraising options. Option A (Gala): capacity 100 attendees; fixed cost $20,000; variable cost $100 per attendee. ...

Statistics & Math
10
0
82 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Return Binary Tree Nodes in Vertical Order

Return Binary Tree Nodes in Vertical Order A binary tree has nodes numbered from 0 through n - 1, with node 0 as the root. Arrays left and right conta...

Coding & Algorithms
1
0
26 people solved
Mar 2, 2026
Lyft logo
Lyft
Hard
Data Scientist

How to Target Coupon Users

A ride-sharing company such as Lyft wants to launch a coupon campaign to increase commuter rides, but the coupon budget is limited. How would you anal...

Analytics & ExperimentationPersonalizationCausal Inference
12
0
159 people solved
Dec 16, 2025
StackAdapt logo
StackAdapt
Hard
Data Scientist

Compute extinction probability in a branching process

Compute extinction probability in a branching process You start with 1 cell at time 0. Every minute, each existing cell independently transitions with...

Statistics & MathProbability
9
0
149 people solved
Jul 23, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Solve palindrome pairs and key path

Question LeetCode 336. Palindrome Pairs; LeetCode 864. Shortest Path to Get All Keys https://leetcode.com/problems/palindrome-pairs/description/ https...

Coding & Algorithms
13
0
51 people solved
Aug 4, 2025
Intuit logo
Intuit
Easy
Product Analyst

Extract insights from a multi-entry funnel scorecard

Scenario You are given a scorecard for a QuickBooks-like product showing a funnel by access point (15+ entry points, highly skewed traffic). For each ...

Analytics & Experimentation
8
0
78 people solved
Oct 21, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Calculate Weekly Event Sums from Daily Counts

EVENT_LOG +------------+------+ | event_date | cnt | +------------+------+ | 2025-05-01 | 17 | | 2025-05-02 | 12 | | 2025-05-08 | 30 | +-------...

Data Manipulation (SQL/Python)
4
0
32 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Easy
Data Engineer

Design a scalable URL shortener

Design a highly scalable URL shortening service, similar to Bitly or TinyURL. The service converts long URLs into short links and redirects short-code...

System DesignSystem Design FundamentalsCaching
27
0
189 people solved
Jan 22, 2025
HubSpot logo
HubSpot
Medium
Software Engineer Locked

Design a video streaming platform like Netflix/YouTube

This question evaluates a candidate's competence in designing large-scale video streaming systems, covering distributed systems architecture, scalabil...

System DesignFile & Media StorageCaching
21
0
154 people solved
Jan 22, 2026
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Design an ACL authorization checking service

This question evaluates system design and security architecture skills, focusing on centralized authorization/ACL models, API and data modeling, cachi...

System DesignAuthentication & Authorization
44
0
306 people solved
Jan 6, 2026
Meta logo
Meta
Easy
Data Scientist

Handle feedback, change pivots, and conflict

Question In the behavioral portion of the Meta Data Scientist screen, answer the following leadership prompts using concrete examples from your own wo...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
4
0
87 people solved
Feb 16, 2026
Bobyard logo
Bobyard
Medium
Software Engineer

Design comments and async image generation

The system design portion combined two prompts: 1. Design a full-stack comment system with frontend, backend, and database support for create, read, u...

System Design
4
0
48 people solved
Apr 9, 2026
Amazon logo
Amazon
Hard
Product Manager

Delivery Driver Performance Evaluation Framework

Product Analytics Prompt: Fair Delivery Driver Performance Evaluation Amazon currently tracks only two measures per driver: number of packages deliver...

Product / Decision MakingMetrics & KPIsFairness & Bias
23
0
132 people solved
Jul 4, 2025
Tesla logo
Tesla
Hard
Machine Learning Engineer

Design an LLM math-solving chain

Design an LLM math-solving chain Design an LLM-Based Arithmetic Solver Context You are building an LLM-driven service that answers arithmetic question...

ML System DesignLLM ApplicationsPrompt Engineering
25
0
204 people solved
Jul 26, 2025
Apple logo
Apple
Medium
Software Engineer

Improve chip performance without process advances

Assume you are working on a digital chip, but the semiconductor process node and basic device technology are fixed: there is no new, faster process an...

Software Engineering Fundamentals
10
0
75 people solved
Dec 8, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Social Media Engagement with SQL Queries

info_stream_views +----------+---------+-----------+-------------------------+-----------------------+------------+ | view_id | post_id | viewer_id |...

Data Manipulation (SQL/Python)
3
0
32 people solved
Aug 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Audit flight data quality from metadata

You’re given an airline on‑time dataset and a one‑page “Metadata” slide that claims: flight_date (string, local time), dep_time/arr_time (HHMM local),...

Data Manipulation (SQL/Python)
2
0
28 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Engineer

Analyze private-account product metrics

Analyze private-account product metrics A social network is building (or refining) a private account feature: any user can set their account to privat...

Analytics & ExperimentationMetrics & KPIsMetric Diagnostics
9
1
102 people solved
Aug 4, 2025
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