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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Hard
Software Engineer

Answer core teamwork and conflict stories

You are in a behavioral interview. Prepare to answer the following prompts using concrete examples from your experience. Prompts 1. Describe a challen...

Behavioral & LeadershipConflict & Collaboration
22
0
189 people solved
Jan 22, 2026
Square logo
Square
Medium
Software EngineerSenior+ AI

Explain an AI-Assisted Engineering Workflow You Can Defend

Explain an AI-Assisted Engineering Workflow You Can Defend Choose a recent engineering project that you personally worked on. Use it to explain the fu...

Behavioral & LeadershipAI-Assisted DevelopmentProject Deep Dive
3
0
29 people solved
Apr 27, 2026
ByteDance logo
ByteDance
Medium
Data Scientist

How would you choose a classification threshold?

You trained a binary classifier that outputs a probability score p(y=1|x). You must choose a decision threshold t to convert probabilities into class ...

Machine Learning
9
0
71 people solved
Nov 12, 2025
Amazon logo
Amazon
Medium
Software Engineer

Solve string partition and equal-sum package problems

Solve string partition and equal-sum package problems 1) Given a string itemCategories (lowercase English letters) and an integer k (0 ≤ k ≤ 26), coun...

Coding & Algorithms
4
0
65 people solved
Aug 1, 2025
Fidelity logo
Fidelity
Medium
Software Engineer

Explain motivation, strengths, dislikes, and tech stack

Explain motivation, strengths, dislikes, and tech stack Behavioral & Technical Self‑Assessment (Software Engineer, Take‑Home Project Round) Context: Y...

Behavioral & Leadership
3
0
34 people solved
Jul 31, 2025
Apple logo
Apple
Hard
Software Engineer

Migrate a monolithic wallet to microservices

System Design: Migrating a Monolithic Digital Wallet (Apple Cash–like) to Microservices Context You operate a high-scale consumer digital wallet and p...

System DesignPayments & LedgersDistributed Transactions & Idempotency
7
0
104 people solved
Sep 6, 2025
Upstart logo
Upstart
Easy
Data Scientist

Explain L1 vs L2 and ridge vs lasso

Explain the differences between: 1. L1 vs L2 regularization (how they change the objective, geometry/intuitions, and typical effects on learned parame...

Machine LearningML FundamentalsRegression & Statistical Modeling
12
0
143 people solved
Dec 9, 2025
Uber logo
Uber
Medium
Data Scientist Locked

Evaluate business value of lower ETA

This question evaluates experimental design, causal inference, metric definition, statistical interpretation, and marketplace analytics in the context...

Analytics & Experimentation
6
0
48 people solved
Jan 18, 2026
Apple logo
Apple
Medium
Software Engineer

Refactor rock–paper–scissors for config and ties

Refactor an existing Rock–Paper–Scissors tournament with three robot players so that the number of rounds is configurable and the system also tracks t...

Coding & AlgorithmsLow-Level Design (OOP)Code Quality & Maintainability
10
0
176 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Write windowed retention and ARPU SQL

You are given three tables. Write one SQL script (CTEs allowed) that answers all parts using window functions and joins (no procedural loops): Schema:...

Data Manipulation (SQL/Python)
4
0
50 people solved
Oct 13, 2025
Airtable logo
Airtable
Medium
Software Engineer Locked

Count business days excluding holidays

This question evaluates proficiency in date and calendar arithmetic, handling set-based exclusions (holiday lists), and reasoning about algorithmic ef...

Coding & AlgorithmsMath & Number Theory
30
0
346 people solved
Jan 22, 2026
Rippling logo
Rippling
Medium
Software Engineer

What was the hardest part of your project?

Behavioral question In a project deep dive, the interviewer asks: 1) “In this project, what was the hardest part (most challenging aspect) and why?” 2...

Behavioral & LeadershipProject Deep DiveFailure & Learning
19
0
154 people solved
Oct 17, 2025
Resolve.Ai logo
Resolve.Ai
Medium
Software Engineer AI Locked

Design a Weighted Log Distributor

This question evaluates distributed systems architecture, load-balancing and traffic-routing competencies, along with fault tolerance, backpressure ha...

System Design
9
0
71 people solved
May 20, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Design Food Ratings and Driver Payouts

Design the backend for a food-delivery product (think DoorDash-style marketplace). The system has two distinct surfaces that you must address together...

System DesignConsistency & AvailabilityPayments & Ledgers
66
0
457 people solved
Feb 3, 2026
Microsoft logo
Microsoft
Hard
Data Scientist

Implement robust k-means from scratch

Implement K-Means Clustering From Scratch (Production-Ready) Context You are asked to implement K-Means clustering from scratch for a machine learning...

Machine Learning
7
0
94 people solved
Oct 13, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Market a new AI technique

Market a new AI technique Context You are a software engineer introducing a new technique and planning a public blog post to drive developer adoption....

System Design
4
0
79 people solved
Aug 4, 2025
Snowflake logo
Snowflake
Hard
Software Engineer

Implement course scheduling and rate limiter analysis

You are given two independent coding problems. --- Problem 1: Course Scheduling You are planning to take a set of courses and are given prerequisite r...

Coding & AlgorithmsGraphsTwo Pointers & Sliding Window
22
0
293 people solved
Nov 22, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Explain a graphics testing project in depth

Explain a graphics testing project in depth Behavioral: End-to-End Walkthrough of a Graphics Testing Project Context: You are interviewing for a softw...

Behavioral & LeadershipProject Deep DiveTesting & Quality
9
0
93 people solved
Aug 9, 2025
Apple logo
Apple
Medium
Data Scientist

Find Smallest Missing Positive Integer in O(n) Time

Scenario LeetCode-style algorithm phone interview Question Implement a function that returns the smallest missing positive integer in an unsorted inte...

Coding & Algorithms
6
0
81 people solved
Aug 4, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Explain Core ML Concepts

Answer these machine-learning fundamentals questions: 1. Explain the difference between batch normalization and layer normalization, including how eac...

Machine Learning
3
0
59 people solved
Jun 28, 2025
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