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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
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
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
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
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
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

Detect earliest collision among moving cars

You are given n vehicles with kinematics parameters. A “collision” means two vehicles occupy the same position at the same time. Assume continuous tim...

Coding & Algorithms
5
0
44 people solved
Dec 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Explain fit for Capital One BA

Behavioral Prompt: 2‑Minute Pitch for a Business Analyst Interview at Capital One Task Deliver a concise, 2‑minute response that covers: 1. Who you ar...

Behavioral & Leadership
3
0
42 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software Engineer

Find shortest subarray with range ≥ k

Problem You are given an integer array nums of length n and an integer k. Define the range of a subarray as: \[ \max(\text{subarray}) - \min(\text{sub...

Coding & Algorithms
4
0
46 people solved
Oct 23, 2025
Uber logo
Uber
Medium
Data Scientist

Calculate January-2024 SF Promotion Impact Using SQL Queries

campaign_users +---------+-----------+ | user_id | treatment | +---------+-----------+ | 1001 | control | | 1002 | test | | 1003 | con...

Data Manipulation (SQL/Python)
9
0
21 people solved
Jul 12, 2025
H
Hot Agent Startup
Medium
Software Engineer

Find High-Intensity Time Periods

Given a list of time-series readings, where each reading is {timestamp, intensity}, and a numeric threshold, return all maximal time periods during wh...

Coding & Algorithms
1
0
14 people solved
Apr 3, 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
Meta logo
Meta
Medium
Product Analyst Locked

How would you grow Meta products?

This question evaluates product growth analytics and experimentation skills, including metric definition, funnel decomposition, segmentation, hypothes...

Analytics & ExperimentationMetrics & KPIsGrowth & Monetization
9
0
84 people solved
Mar 19, 2026
Google logo
Google
Hard
Data Scientist

Explain logistic regression vs forests and boosting

Technical Screen — Machine Learning Answer all parts precisely. 1) Binary logistic regression: model, loss, gradient, convexity - Define the model: p(...

Machine LearningSupervised LearningML Fundamentals
19
0
161 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Implement ad matching and delivery routing

Implement ad matching and delivery routing Part A: Implement a data structure for an ad-matching service that supports add(campaign), remove(campaign)...

Coding & Algorithms
7
0
78 people solved
Jul 16, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Count binary search steps for specific keys

You have the sorted array: [22, 34, 55, 77, 89, 93, 99, 102, 120, 140] Using standard binary search with low and high indices and mid = floor((low + h...

Software Engineering Fundamentals
5
0
40 people solved
Oct 24, 2025
Dropbox logo
Dropbox
Medium
Software Engineer

Implement hierarchical folder access check

You are asked to simulate a simple hierarchical file system and implement an access-check function. The file system consists of folders arranged in a ...

Coding & AlgorithmsAuthentication & AuthorizationTrees
10
0
105 people solved
Oct 18, 2025
Hulu logo
Hulu
Medium
Data ScientistSenior+ Locked

Interpret a Streaming Regression Without Overstating Causality

Learn to explain regression coefficients and confidence intervals to a product partner without turning association into causation. Examine confounding...

Analytics & Experimentation
1
0
19 people solved
Jun 7, 2026
ByteDance logo
ByteDance
Medium
Site Reliability Engineer Locked

How would you troubleshoot Linux services?

This question evaluates proficiency in Linux system administration and site reliability engineering tasks—specifically troubleshooting disk-full condi...

Software Engineering FundamentalsReliability & SREOperating Systems
12
0
91 people solved
Jan 22, 2026
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