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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
EliseAI logo
EliseAI
Easy
Software Engineer

Introduce Yourself and Explain What You Want in Your Next Engineering Role

The interviewer opens a 30-minute software engineer phone screen with two questions in a row. The screen is mostly behavioral and experience questions...

Behavioral & LeadershipMotivation & Fit
0
0
8 people solved
Jul 5, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Implement hostname-restricted web crawler

Implement a single-threaded web crawler that, given a starting URL startUrl and an interface getUrls(url) that returns all hyperlinks on the page at u...

Coding & AlgorithmsGraphs
15
0
252 people solved
Sep 6, 2025
Waymo logo
Waymo
Medium
Machine Learning Engineer

Debug Tensor Conversion Bugs

You are given a small tensor utility library used in distributed numerical code. The implementation has several bugs related to aliasing, array conver...

Coding & Algorithms
9
0
86 people solved
Nov 27, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Walk through a recent technical project

Project Deep-Dive (Onsite Behavioral + Technical) Context: Choose a recent technical project (ideally within the last 12–18 months) where you led or h...

Behavioral & LeadershipProject Deep Dive
25
0
340 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Turn an Unlikely Project Around and Recover When AI Coding Falls Short

Prepare two senior engineering stories: turning an apparently infeasible project into a credible result, and recovering when an AI coding tool produce...

Behavioral & LeadershipAI-Assisted DevelopmentOwnership & Execution
3
0
28 people solved
May 29, 2026
Airbnb logo
Airbnb
Medium
Software Engineer Locked

Compute board-game score from regions

This question evaluates grid traversal and connected-component identification skills along with region-based aggregation (counting cells and summing c...

Coding & AlgorithmsGrids & Matrices
46
1
559 people solved
Feb 12, 2026
Robinhood logo
Robinhood
Easy
Software Engineer

Design in-memory payment and friendship system

Design and implement an in-memory payment system with simple social features. The system processes a sequence of requests that can: 1. Register a user...

Coding & AlgorithmsLow-Level Design (OOP)
21
0
254 people solved
Dec 8, 2025
Stripe logo
Stripe
Medium
Software Engineer Locked

Assign tasks to workers with types and accounts

This question evaluates algorithmic scheduling and dynamic resource-allocation skills, including priority-queue/heap usage, time-based simulation, and...

Coding & AlgorithmsHeaps & Priority Queues
9
0
125 people solved
Jan 2, 2026
Reddit logo
Reddit
Medium
Machine Learning EngineerSenior+

Model y from x and interpret distributions

Scenario You are given a dataset with one input feature x and a target y. The interviewer asks: “How would you model this?” Later, you are shown a plo...

Machine LearningSupervised LearningModel Monitoring & Drift
16
0
205 people solved
Feb 12, 2026
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Compare DCN v1 vs v2 and A/B test

This question evaluates understanding of deep learning model architectures (DCN v1 vs v2), feature interaction modeling, production training and servi...

Machine LearningCTR Prediction & Ads MLExperiment Design (A/B Testing)
15
0
186 people solved
Mar 1, 2026
DRW logo
DRW
Medium
Software Engineer

Solve odd-string, digit swap, patient slot assignment

Question Task 1 – Odd-occurrence string: Write a function that, given an integer N (1..200 000), returns a length-N lowercase string in which every le...

Coding & AlgorithmsGraphsArrays & Strings
11
0
202 people solved
Aug 4, 2025
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Return the k most frequent values in an array with a deterministic tie rule

Given an integer array nums and an integer k, return the k values that occur most often in nums. Rank the distinct values of nums by frequency (number...

Coding & AlgorithmsHeaps & Priority QueuesSorting
1
0
12 people solved
Feb 5, 2026
Google logo
Google
Hard
Data Scientist Locked

Explain Bootstrap and Prove Uniformity

This question evaluates mastery of statistical inference and probability theory, testing knowledge of resampling methods (bootstrap), interpretation o...

Statistics & MathProbabilityHypothesis Testing
19
0
185 people solved
Dec 3, 2025
Anthropic logo
Anthropic
Medium
Backend Engineer

How should you handle misaligned interviews?

A backend engineer prepared for a coding interview after the recruiter explicitly said the round would assess concurrency. The candidate chose Java as...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
29
0
217 people solved
Jan 19, 2026
Rogo logo
Rogo
Medium
Machine Learning Engineer Locked

Manage Context Windows in an Applied AI System

An applied-AI system-design interview about building model context from user requests, conversation history, retrieved evidence, and tool results. It ...

ML System Design
4
0
34 people solved
Jun 24, 2026
Roblox logo
Roblox
Easy
Machine Learning Engineer

Find the Most Frequent Log Call

You are given a sequence of application log entries. Each entry contains the name of a function or API call made by the system. Write a function that ...

Coding & AlgorithmsArrays & Strings
19
0
155 people solved
Feb 1, 2026
Netflix logo
Netflix
Medium
Software Engineer

Model data for an ads platform

Design a data model (logical schema) for an advertising platform. Include core entities such as: - Business/account (advertiser) - Campaign and budget...

System DesignStorage & ShardingAds Systems
63
0
447 people solved
Jan 30, 2026
Netflix logo
Netflix
Medium
Software EngineerSenior+

Implement Caches, Undo, and Traversal

Solve the following coding tasks. For each task, define clean APIs, implement the core logic, and be prepared to explain time and space complexity. Ta...

Coding & Algorithms
10
0
94 people solved
Apr 3, 2026
Scale AI logo
Scale AI
Hard
Machine Learning Engineer

Explain Transformers, attention, decoding, RL, and evaluation

Technical Screen: Transformers, Attention, Decoding, RLHF, Evaluation, and Optimization Context: Assume a modern decoder-only LLM unless stated otherw...

Machine LearningTransformers & AttentionLLM Evaluation
37
0
356 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Diagnose Transformer training and inference bugs

Debugging a Transformer That Intermittently Throws Shape/Dtype Errors and Fails to Converge You inherit a Transformer-based sequence model (decoder-on...

Machine LearningNeural Networks & TrainingDebugging
131
0
1021 people solved
Aug 11, 2025
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