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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

Practice with Claude Code or Codex

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>Build a 30-day plan from PracHub's Meta SWE questions.

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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
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Design a URL Shortening Service

This question evaluates expertise in designing scalable, low-latency web services, covering URL alias generation and collision handling, storage and c...

System Design
5
0
44 people solved
Feb 22, 2026
Uber logo
Uber
Medium
Software Engineer

Describe your strongest project

What is the most impressive project you have worked on? In your answer, cover: - The problem/business goal and why it mattered - Your specific role an...

Behavioral & LeadershipProject Deep Dive
10
0
102 people solved
Feb 20, 2026
Uber logo
Uber
Medium
Software Engineer

Count connected islands using Union-Find

You are given an m x n grid of characters where '1' represents land and '0' represents water. An island is a group of horizontally or vertically adjac...

Coding & AlgorithmsGrids & Matrices
30
0
234 people solved
Feb 20, 2026
DoorDash logo
DoorDash
Easy
Product Analyst Locked

Investigate LA successful orders drop

This question evaluates product and data analytics competencies including metric decomposition, causal inference, funnel analysis, and experimentation...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
15
0
129 people solved
Feb 19, 2026
Meta logo
Meta
Easy
Data Scientist Locked

Detect bots using comment distribution patterns

This question evaluates a candidate's competency in behavioral analytics, feature engineering, anomaly and bot detection, statistical validation, and ...

Analytics & Experimentation
4
0
60 people solved
Feb 16, 2026
Meta logo
Meta
Easy
Data Scientist Locked

Investigate why an advertiser’s spend decreased

This question evaluates a Data Scientist's competency in analytics and experimentation—specifically root-cause analysis of ad spend declines, attribut...

Analytics & Experimentation
5
0
70 people solved
Feb 16, 2026
Meta logo
Meta
Easy
Analytics Engineer Locked

Design and evaluate an ads ranking algorithm

This question evaluates a candidate's proficiency in designing and evaluating production-scale ads ranking systems within Machine Learning, covering r...

Machine LearningRanking ModelsCTR Prediction & Ads ML
13
0
96 people solved
Feb 15, 2026
Meta logo
Meta
Easy
Data Scientist Locked

Analyze and mitigate fake advertiser accounts

This question evaluates competency in fraud detection analytics, including operationally defining fake advertiser accounts, designing longitudinal met...

Analytics & ExperimentationMetrics & KPIsSampling & Estimation
13
0
129 people solved
Feb 15, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Evaluate a new-listing notification feature

This question evaluates product analytics, causal inference, experimentation design, metric definition, and business-impact estimation competencies fo...

Analytics & Experimentation
3
0
29 people solved
Feb 15, 2026
Home Depot logo
Home Depot
Easy
Product Analyst

Decide whether to keep a negative-margin promotion

A retail team is running a Mulch promotion. The promotion currently has a negative unit margin (i.e., discounted price is below unit cost), so on the ...

Analytics & Experimentation
4
0
47 people solved
Feb 14, 2026
ByteDance logo
ByteDance
Easy
Data Scientist Locked

Explain Train-Test Performance Gap

This question evaluates a candidate's competency in diagnosing model generalization failures for both classical machine learning and deep learning sys...

Machine Learning
2
0
37 people solved
Feb 14, 2026
Two Sigma logo
Two Sigma
Easy
Data Scientist Locked

How to forecast bike dock demand

This question evaluates competency in time-series forecasting and demand prediction, including feature engineering, model selection and evaluation, ha...

Machine Learning
9
0
66 people solved
Feb 13, 2026
Coinbase logo
Coinbase
Medium
Data Scientist

Design Identity-Trust A/B Test

You are interviewing for a Data Scientist role on an Identity & Trust team at a consumer product company. The team wants to launch a feature that stre...

Analytics & Experimentation
8
0
67 people solved
Feb 13, 2026
Capital One logo
Capital One
Easy
Data Scientist Locked

How would you decide to cancel a TV show?

This question evaluates a data scientist's competencies in business analytics and strategic decision-making, including financial and valuation reasoni...

Analytics & ExperimentationBusiness Case Analysis
8
0
123 people solved
Feb 12, 2026
Meta logo
Meta
Easy
Data Scientist Locked

How would you design a Shop Ads ranking algorithm?

This question evaluates a candidate's understanding of machine learning-driven ad ranking, auction mechanics, multi-stakeholder objective formulation,...

Machine LearningCTR Prediction & Ads MLRanking Models
7
0
86 people solved
Feb 12, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Model an ads ranking system

This question evaluates machine learning modeling, feature engineering, and systems-level ranking competencies for ad selection and monetization, cove...

Machine LearningRanking ModelsCTR Prediction & Ads ML
11
0
92 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design content moderation for a posting app

This question evaluates a candidate's ability to design content-moderation features, covering competencies in scalable system design, API and data mod...

System Design
4
0
68 people solved
Feb 12, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Apply operations efficiently using Command pattern

This question evaluates skills in object-oriented design, the Command Pattern, correctness reasoning, extensibility of operation abstractions, and opt...

Software Engineering FundamentalsLow-Level Design (OOP)
5
0
79 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Design a recommendation system from scratch

This question evaluates expertise in recommender systems and related competencies including machine learning-based candidate generation and ranking, d...

System DesignRecommendation SystemsRanking Models
9
0
119 people solved
Feb 12, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Explain key React concepts and error handling

This question evaluates competency in React fundamentals, including understanding of the Virtual DOM, Hooks usage, React 18 concurrent features, serve...

Software Engineering FundamentalsReact & UI Frameworks
14
0
106 people solved
Feb 12, 2026
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