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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
Data Scientist

Compare Instagram vs. Facebook using causal experiments

Compare Instagram and Facebook for consumer time and engagement: a) Define a single-objective OEC that captures healthy cross-app ecosystem value with...

Analytics & Experimentation
5
0
66 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Evaluate the Health of Facebook Groups

Group Health Metrics and Threaded Comments Experiment You are a Data Scientist working on a platform with Groups ranging from small hobby clubs to ver...

Analytics & Experimentation
56
0
84 people solved
Jul 12, 2025
Tesla logo
Tesla
Hard
Machine Learning Engineer

Explain and derive importance sampling estimators

Importance Sampling: Estimators, Properties, Optimal Proposals, and ESS Context You want to estimate an expectation under a target distribution p over...

Statistics & MathSampling & EstimationProbability
17
0
216 people solved
Aug 12, 2025
DoorDash logo
DoorDash
Hard
Data Scientist

Design analytics for a new-market launch

DoorDash New-City Launch: Metrics, Guardrails, and Causal Rollout Design Task Define success metrics and guardrails for three phases of a new-city lau...

Analytics & ExperimentationMetrics & KPIsExperiment Design (A/B Testing)
37
0
265 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Product Manager

Apply GenAI to Business Messaging

Product Strategy Prompt: Apply GenAI to Enterprise Business Messaging Explain what generative AI is and how you would apply it to an enterprise busine...

Product Design & Strategy
5
0
87 people solved
Jul 1, 2025
Salesforce logo
Salesforce
Medium
Product Manager

Working Through a Conflict Between Product and Engineering

Describe a time you disagreed with your engineering team or an engineering counterpart. What was the disagreement about, how did you work through it, ...

Behavioral & LeadershipConflict & CollaborationTechnical Tradeoffs for PMs
1
0
14 people solved
Nov 21, 2023
Remitly logo
Remitly
Medium
Product Manager

Making the Go/No-Go Call on a New Product Idea at Remitly

Your team at Remitly is considering a new product. How would you decide whether it is worth launching? `hint Set the bar before the evidence Agree on ...

Product Design & StrategyProduct StrategyBusiness Case Analysis
1
0
11 people solved
Aug 27, 2024
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Count Customers Buying Both 'Kindle' and 'Alexa'

ITEMS +---------+-----------+ | ITEM_ID | ITEM_NAME | +---------+-----------+ | 101 | Kindle | | 202 | Alexa | | 303 | Fire TV | ...

Data Manipulation (SQL/Python)
15
0
68 people solved
Jul 12, 2025
Uber logo
Uber
Medium
Data Scientist

Compute square root to 1 decimal

Problem Given a non-negative real number x, implement a function sqrt1dp(x) that returns \(\sqrt{x}\) rounded (or truncated—clarify with interviewer) ...

Coding & AlgorithmsBinary SearchMath & Number Theory
19
0
134 people solved
Sep 16, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Discuss Projects and Planning Improvements

Behavioral: End-to-End Project Leadership and Cross-Quarter Initiative Provide a structured walkthrough that demonstrates ownership, product understan...

Behavioral & Leadership
4
0
84 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Hard
Software Engineer

Design credit balance with vector-clock expirations

Credit Balance Service with Vector-Clock Expiries You are designing a backend service that maintains per-user promotional credits. Credits are granted...

System DesignData Structure DesignDistributed Coordination
19
0
206 people solved
Sep 6, 2025
Antra logo
Antra
Easy
Software Engineer

Explain core Java and Spring fundamentals

Java and Spring fundamentals You are interviewing for a backend Java/Spring role. Answer the following conceptual questions: 1. Collections & data str...

Software Engineering FundamentalsProgramming LanguagesConcurrency
8
0
121 people solved
Oct 9, 2025
Capital One logo
Capital One
Medium
Data Scientist

Choose and justify ML algorithms for tabular prediction

You must choose an algorithm for tabular prediction of arrival delay under these constraints: 500k rows, 120 features (mixed numeric/categorical with ...

Machine Learning
4
0
81 people solved
Oct 13, 2025
Motive logo
Motive
Medium
Software Engineer

Discuss a recent project and impact

Behavioral & Leadership: End-to-End Project Walkthrough You are in an onsite software engineering interview. The interviewer asks you to walk through ...

Behavioral & Leadership
2
0
41 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Engineer

Return count and renewal percentage of unreturned good copies

Tables: copies(copy_id, condition), checkouts(copy_id, checkout_date, return_date, renewal_count). Write a single SQL query that returns one row with ...

Data Manipulation (SQL/Python)
4
0
32 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Product Manager

Amazon Fresh Quick-Commerce Entry: Go/No-Go on 10-Minute Delivery for Indian Shoppers

Amazon is weighing whether Amazon Fresh should launch a 10-minute grocery delivery service in India and compete in the country's quick-commerce market...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
7 people solved
May 24, 2026
Microsoft logo
Microsoft
Medium
Software Engineer

Design a high-level logging system

Design a high-level centralized logging system for a company. Assume many services (microservices, batch jobs) running across multiple hosts/container...

System DesignObservabilityData Ingestion & CDC
9
0
166 people solved
Feb 9, 2026
Sealth logo
Sealth
Medium
Software Engineer Locked

Simulate Threshold Grid Infection

This question evaluates understanding of discrete grid-based simulations and local state-transition rules, focusing on modeling infection spread, neig...

Coding & Algorithms
6
0
45 people solved
Mar 13, 2026
Roblox logo
Roblox
Hard
Data Scientist

Demonstrate fit with quantified stories and motivations

Behavioral & Leadership Technical Screen Prompt (Data Scientist) Provide two stories—one professional and one personal—that demonstrate you’re a stron...

Behavioral & Leadership
7
0
75 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software EngineerIntern Locked

Implement nested object path lookup

This question evaluates parsing and traversal of nested maps and arrays, robust error handling for missing keys and out-of-bounds indices, and reasoni...

Coding & Algorithms
6
0
61 people solved
Oct 31, 2025
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