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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
BlackRock logo
BlackRock
Medium
Data Scientist

Describe a quantitative market model

Interview Prompt: Quantitative Model for Market Data Provide a concrete example of a quantitative model you built to analyze market data. Cover the fo...

Analytics & Experimentation
5
0
77 people solved
Sep 6, 2025
DRW logo
DRW
Medium
Data Scientist

Differentiate sample vs population standard deviation

Differentiate sample vs population standard deviation Population vs. Sample Standard Deviation in a Finite Rolling Window Context You are implementing...

Statistics & Math
6
0
83 people solved
Aug 9, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Explain LLM architecture, tuning, evaluation

LLM Architecture, Positional Embeddings, Fine-Tuning (PEFT), Regularization, and Evaluation Context You are interviewing for a Machine Learning Engine...

Machine LearningTransformers & AttentionFine-Tuning & Alignment Techniques
9
0
105 people solved
Sep 6, 2025
Shopify logo
Shopify
Medium
Data Scientist

Assess Candidate's Remote Collaboration and Technical Proficiency

Behavioral Interview: Remote Cross-functional Data Scientist You are interviewing for a Data Scientist role on a cross-functional analytics team that ...

Behavioral & Leadership
120
0
403 people solved
Jul 12, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Determine Whether Courses Can Be Completed

You are given an integer numCourses, representing courses labeled from 0 to numCourses - 1, and a list prerequisites. Each prerequisite is a pair [cou...

Coding & Algorithms
1
0
15 people solved
Apr 29, 2026
PayPal logo
PayPal
Hard
Data Scientist

Influence policy with BI deliverables

BI/Fraud Stakeholder Case: Drive an Account Takeover (ATO) Policy Change in 90 Days You join the Chicago Fraud team as a Decision Scientist. The hirin...

Behavioral & LeadershipBI & Reporting SystemsMetrics & KPIs
6
0
92 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Implement Plus One

Given a non-empty array of digits representing a non-negative integer, where the most significant digit comes first and each element is in [0, 9], add...

Coding & Algorithms
5
0
68 people solved
Feb 13, 2026
Etsy logo
Etsy
Medium
Data ScientistIntern

Explain approach and seek feedback effectively

Technical Screen: Communication in Live Coding and Internship Planning Part 1 — Live Coding Communication During a 20-minute live coding exercise foll...

Behavioral & Leadership
7
0
69 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Clean OCR data and build an LLM dataset

This question evaluates competency in OCR data cleaning and normalization, dataset engineering for LLM fine-tuning, quality filtering, and evaluation ...

Machine LearningData Cleaning & WranglingAnnotation & Label Quality
8
0
115 people solved
Feb 11, 2026
Turo logo
Turo
Medium
Software Engineer

Route HTTP requests to pods in a cluster

In a Docker/Kubernetes-like container cluster running multiple replicas (pods) of a service, explain how an incoming HTTP request reaches a specific p...

System Design
9
0
76 people solved
Feb 12, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design An Ad Creative Relationship Processing System

Prepare for a system design interview about processing ad creative plans, videos, keywords, and relationship results from an external model API. The p...

System Design
3
0
24 people solved
Jun 17, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Design a multi-channel notification system

System Design: Multi-Channel Notifications (Email, SMS, Push, In‑App) Context Design a notification platform that reliably delivers messages across mu...

System DesignSystem Design FundamentalsMessaging & Event-Driven
11
0
217 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software Engineer

Extend cloud file system with copy and compression

In-Memory Cloud File System V2: Copy, Capacity Updates, Compress/Decompress Design an in-memory file system with per-user quotas and additional operat...

Coding & AlgorithmsLow-Level Design (OOP)Heaps & Priority Queues
11
0
82 people solved
Feb 11, 2026
TikTok logo
TikTok
Medium
Software Engineer

Solve pair-counting and account-merging problems

Problem A — Count qualifying products You are given two integer arrays A and B, and an integer T. For each element a in A, count how many elements b i...

Coding & Algorithms
4
0
71 people solved
Dec 8, 2025
Instacart logo
Instacart
Medium
Software Engineer

Describe your most complex end-to-end project

Describe your most complex end-to-end project End-to-End Project Deep Dive (Behavioral) Describe the most complex end-to-end project you led or signif...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
4
0
83 people solved
Jul 31, 2025
Meta logo
Meta
Medium
Software Engineer

Design unit tests for grid navigation

Mouse-Maze Controller: Design a Comprehensive Unit Test Suite Context (assumptions to make the task self-contained) Assume we are testing a controller...

Software Engineering FundamentalsTesting & Quality
4
0
76 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Count changed nodes between two menu trees

This question evaluates algorithmic problem-solving with tree data structures, testing competencies in hierarchical diffing, node matching by sibling ...

Coding & AlgorithmsTrees
40
0
334 people solved
Feb 11, 2026
Meta logo
Meta
Hard
Data Scientist

Estimate revenue of organic shopping tab

Estimate Monthly Revenue for a New Shopping Tab (Organic Only) Context You are evaluating the potential monthly revenue impact of launching a new Shop...

Analytics & Experimentation
5
0
41 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement binary tree in-order traversal

Given the root of a binary tree, return the in-order ordering of its node values. Implement both a recursive solution and an iterative solution using ...

Coding & Algorithms
7
0
53 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Estimate Redesign Impact Using Propensity Score Matching

Estimate Redesign Impact Using Propensity Score Matching Scenario A mobile app has been redesigned. Adoption is voluntary: users choose to upgrade to ...

Analytics & ExperimentationCausal Inference
123
0
305 people solved
Aug 4, 2025
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