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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
Google logo
Google
Medium
Product Manager

PM technical depth: rating yourself, a technical decision you shaped, and a system diagram

The interviewer wants to gauge how technical you are as a product manager and asks for three things in a row. First, how technically deep are you? Sec...

System DesignTechnical Tradeoffs for PMsProject Deep Dive
1
0
12 people solved
Dec 13, 2024
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
13
0
168 people solved
Dec 16, 2025
Meta logo
Meta
Medium
Machine Learning Engineer

Detect cycles and order with DFS

You are given a directed graph of package dependencies represented as an adjacency list: Map<String, List<String>> deps where deps[p] lists packages t...

Coding & Algorithms
7
0
90 people solved
Sep 6, 2025
Expedia logo
Expedia
Hard
Software Engineer Locked

Design an employee directory with reporting queries

This question evaluates system design competence with emphasis on hierarchical data modeling, concurrent data consistency, API and schema design, and ...

System DesignSystem Design FundamentalsStorage & Sharding
6
0
119 people solved
Jan 6, 2026
Amazon logo
Amazon
Medium
Data ScientistSenior+

Calculate A/B sample size, CI, decision rules

A/B Test Design and Analysis: Signup Funnel You are designing and analyzing a two-arm A/B test for a signup funnel. Assume 1:1 traffic split and indep...

Statistics & MathExperiment Design (A/B Testing)Hypothesis Testing
13
0
112 people solved
Oct 13, 2025
Zest AI logo
Zest AI
Hard
Data Scientist

Build a fair loan classifier

You are given a dataset of loan applicants. Each row represents one loan application and contains applicant attributes, loan attributes, and a binary ...

Machine Learning
4
0
54 people solved
Apr 5, 2026
Amazon logo
Amazon
Medium
Data Scientist

Explain MySQL to MS SQL Server query syntax differences.

transactions | id | user_id | amount | txn_date | |----|---------|--------|----------| | 1 | 1001 | 25.00 | 2023-07-01 | | 2 | 1002 | 40.00 ...

Data Manipulation (SQL/Python)
109
0
404 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Identify research to improve business

Analytics & Experimentation Strategy to Improve Business Outcomes Context Assume you are a software engineer interviewing for a role focused on analyt...

Analytics & Experimentation
6
0
73 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Find Lowest Common Ancestor with Parents

Question LeetCode 1650. Lowest Common Ancestor of a Binary Tree III Compute the time and space complexity of your solution https://leetcode.com/proble...

Coding & Algorithms
3
0
39 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Product Manager

Helping Outlook Users Catch Up on an Email Backlog After Time Off

You are a product manager on Microsoft Outlook. When people come back from a vacation, the pile of email waiting for them is often so large that they ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
10 people solved
Aug 14, 2025
Reddit logo
Reddit
Easy
Data Scientist Locked

Measure impact of ads-manager automation feature

This question evaluates competency in causal impact measurement, experimental design, metric selection, monitoring instrumentation, and bias identific...

Analytics & Experimentation
10
0
94 people solved
Dec 11, 2025
Headspace logo
Headspace
Medium
Product Manager

Headspace Strategy: Becoming the First Stop for Anxiety Over Expert Videos on YouTube

You are a product manager at Headspace. When people feel anxious, many of them skip mental health apps and instead listen to podcasts by medical exper...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
5 people solved
May 23, 2026
Meta logo
Meta
Medium
Data Scientist

Write advanced SQL for sales support analytics

Write SQL for the following schema and tasks. Assume ANSI SQL with DATE_TRUNC and INTERVAL supported. Sample tables (minimal rows shown). accounts +--...

Data Manipulation (SQL/Python)
2
0
28 people solved
Oct 13, 2025
Amazon logo
Amazon
Easy
Applied Scientist Locked

Explain weight initialization methods and goals

This question evaluates a candidate's understanding of weight initialization in deep neural networks, assessing competencies in training dynamics such...

Machine Learning
8
0
88 people solved
Dec 8, 2025
Trexquant logo
Trexquant
Medium
Software Engineer

Explain C++ default constructor generation rules

You are given a C++ class type T. 1. When will the compiler implicitly declare a default constructor for T? 2. When will the implicitly-declared defau...

Software Engineering FundamentalsProgramming Languages
7
0
116 people solved
Sep 1, 2025
Shopify logo
Shopify
Hard
Data Scientist

Calculate Pirated Usage and Revenue Loss

You are analyzing theme piracy on an e-commerce platform. Assume the analysis window is 2023-01-01 through 2023-12-31, all timestamps are stored in UT...

Data Manipulation (SQL/Python)SQL
24
0
235 people solved
Jan 12, 2026
Two Sigma logo
Two Sigma
Hard
Data Scientist Locked

Forecast bikes available at a station

This question evaluates proficiency in time-series forecasting, feature engineering, handling temporal data splits, and incorporating operational cons...

Machine Learning
5
0
89 people solved
Jan 6, 2026
Amazon logo
Amazon
Medium
Product Manager

Story of Overturning an Entrenched Practice: Resistance, Results and Hindsight

Tell the interviewer about a specific time you questioned an established way of doing things at work and pushed to change it. They want the whole arc:...

Behavioral & LeadershipInnovation & SimplificationLeadership & Influence
0
0
8 people solved
Oct 20, 2025
PayPal logo
PayPal
Hard
Machine Learning Engineer

Design RL-based spending limit policy

RL System Design: Per‑User Spending Limits You are designing a reinforcement learning (RL) system to set per-user spending limits in a payments/risk c...

ML System Design
5
0
88 people solved
Sep 6, 2025
Lyft logo
Lyft
Medium
Product Manager

Lyft Metric Investigation: Root-Causing a Sudden Jump in Cancelled Trips

You are a product manager at Lyft. Ride cancellations rose sharply this week compared with a normal week. What could explain the jump, and how would y...

Analytics & ExperimentationMetric Diagnostics
2
0
23 people solved
Aug 4, 2024
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