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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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 Locked

Write SQL for CTR and Revenue

This question evaluates proficiency in SQL-based data manipulation and analytics, focusing on joins across event and reference tables, time-of-day buc...

Data Manipulation (SQL/Python)SQL
14
1
94 people solved
Mar 12, 2026
Amazon logo
Amazon
Hard
Product Manager

Launching Alexa in a New-Language Market

Product Case: Launch Alexa in a New Language Market You are the Product Manager for Alexa and must launch Alexa in a country where the primary languag...

Product / Decision Making
10
0
58 people solved
Jul 4, 2025
Lyft logo
Lyft
Medium
Data Scientist

Investigate Causes of Driver WOW Score Drop

Investigate Causes of Driver WOW Score Drop Investigating a 10% QoQ Drop in Driver WOW (Satisfaction) Context Assume WOW is a standardized driver sati...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
36
0
126 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Software Engineer

Find mode or minimum with time-space tradeoffs

For an unsorted array of integers, implement two functions: ( 1) return the minimum value; ( 2) return the value that appears most frequently (the mod...

Coding & Algorithms
6
0
48 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a GitHub-like user community

System design: GitHub-like user community Design the backend for a “developer community” product inspired by GitHub’s social layer. Core requirements ...

System Design
2
0
47 people solved
Sep 5, 2025
Uber logo
Uber
Medium
Software Engineer

Count paths with prime-ending jumps

You are given an integer n representing the top of a staircase, where you start at step 0 and want to land exactly on step n. In one move, you may jum...

Coding & Algorithms
3
0
45 people solved
Jan 15, 2026
Amazon logo
Amazon
Medium
Software Engineer

Compute unique visitors per department from clicks

Given tables Products(product_id, department, category, subcategory) where department > category > subcategory form a hierarchy, and ClickLog(user_id,...

Data Manipulation (SQL/Python)SQL
7
0
74 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Data Scientist

Demonstrate leadership under strict rules

Behavioral — STAR: Operating Under a Non‑Negotiable Policy Context: Onsite behavioral & leadership interview for a Data Scientist. Describe a specific...

Behavioral & Leadership
5
0
62 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Measure impact of bot mitigation via experiment

Experiment Design: Measuring the Impact of a Bot‑Mitigation System Context You are evaluating a production change to a large social platform that hide...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
10
0
111 people solved
Oct 13, 2025
Plymouth Rock Assurance Corporation logo
Plymouth Rock Assurance Corporation
Medium
Data ScientistIntern

Compute Fibonacci Numbers

Write a function that returns the nth Fibonacci number. Definitions and requirements: - Use zero-based indexing: fib(0) = 0, fib(1) = 1. - For n >= 2,...

Coding & Algorithms
1
0
32 people solved
Jan 3, 2026
Meta logo
Meta
Medium
Software Engineer

Implement string dedup and mirror tree traversal

- String cleanup with group deletions (LeetCode-inspired): Given a string s consisting of lowercase letters, repeatedly delete any maximal contiguous ...

Coding & Algorithms
2
0
37 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find first unique character

Find first unique character Given a lowercase/uppercase alphanumeric string s, return the index of the first character that appears exactly once; if n...

Coding & Algorithms
5
0
47 people solved
Jul 15, 2025
Meta logo
Meta
Hard
Data Scientist

Design an Experiment to Evaluate New ML Model

Design an Experiment to Evaluate New ML Model Experiment Design: Validating a New Ads Ranking Model Context You operate an ads platform with an existi...

Analytics & Experimentation
3
0
44 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Answer Amazon Leadership Principles questions

Answer Amazon Leadership Principles questions Behavioral Interview Prep: Amazon Leadership Principles (Software Engineer, Onsite) Context You are prep...

Behavioral & LeadershipOwnership & ExecutionFailure & Learning
18
0
124 people solved
Aug 7, 2025
Apple logo
Apple
Medium
Software Engineer

Implement deep clone for complex objects

Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...

Coding & AlgorithmsJavaScript & TypeScriptGraphs
12
0
120 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Design robust group size limiting for calls

Design the admission-control and enforcement algorithm to limit group-call size under real-world race conditions. Constraints: multiple SFU edges in m...

Coding & Algorithms
9
0
67 people solved
Oct 13, 2025
Whatnot logo
Whatnot
Medium
Data ScientistSenior+

Calculate Monthly Customer Retention

Calculate Monthly Customer Retention Write one PostgreSQL SELECT statement or CTE query. Do not create, alter, or modify tables. Schema orders | colum...

Data Manipulation (SQL/Python)
1
0
25 people solved
Mar 30, 2026
Boeing logo
Boeing
Easy
Software Engineer Locked

Explain AWS access control and frontend typing

This question evaluates cloud infrastructure and access control (EC2, S3 pre-signed URLs, IAM), frontend React fundamentals (hooks and common pitfalls...

Software Engineering Fundamentals
2
0
40 people solved
Jan 22, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Track Customer Referral Revenue

This question evaluates understanding of dynamic data structure design and algorithms for maintaining aggregated metrics over a referral tree, specifi...

Coding & Algorithms
6
0
53 people solved
Jan 16, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze New Shops' Activity Compared to Existing Ones

shops +---------+------------+---------------+ | shop_id | created_at | category | +---------+------------+---------------+ | 1 | 2024-01-0...

Data Manipulation (SQL/Python)
54
0
25 people solved
Jul 12, 2025
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