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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
Figma logo
Figma
Medium
Software Engineer Locked

Design Trending Collaborative Files

Design a service that ranks currently trending collaborative files from billions of daily events. Define a trend metric, windowed streaming aggregatio...

System DesignSearch & Feed SystemsBatch & Stream Processing
24
0
171 people solved
Jul 1, 2026
Cursor logo
Cursor
Medium
Backend EngineerNew Grad

Design Scalable Notification Rate Limiter

Design a production-grade rate limiter for notification sending that enforces limits at three levels of an organizational hierarchy. The system expose...

System DesignRate LimitingDistributed Transactions & Idempotency
137
0
1021 people solved
Feb 18, 2026
OpenAI logo
OpenAI
Medium
iOS EngineerSenior+ Locked

Implement A Mobile Chat Interface In An Existing Codebase

Prepare for a mobile engineering prompt about implementing a ChatGPT-style chat interface inside an unfamiliar existing codebase. The interview focuse...

Software Engineering FundamentalsiOSPrioritization & Tradeoffs
15
0
110 people solved
Jul 3, 2026
Google logo
Google
Easy
Software Engineer Locked

Busiest Rental Car

This question evaluates a candidate's ability to simulate a resource-allocation process using interval scheduling and greedy assignment rules. It test...

Coding & Algorithms
12
1
68 people solved
Jun 22, 2026
Amazon logo
Amazon
Easy
Software Engineer

Demonstrate Project Ownership and In-Depth Investigation

Use examples from your past projects to explain how you take ownership of work and investigate a problem in depth. Describe your personal actions, the...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
1
0
15 people solved
Aug 30, 2026
Google logo
Google
Hard
Machine Learning Engineer

Explain KL Divergence in Language Models

Explain KL Divergence in Language Models Define Kullback-Leibler divergence, explain its directionality and support requirements, and describe why mod...

Machine Learning
4
0
57 people solved
Aug 14, 2026
Yelp logo
Yelp
Easy
Data Scientist

Recommend a Decision After a Nonsignificant Experiment

An A/B test estimates a 2.0% relative improvement in a primary metric, with a two-sided 95% confidence interval from -0.5% to 4.5% and (p=0.12). Guard...

Analytics & Experimentation
9
0
115 people solved
Aug 27, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Implement a Contiguous Memory Allocator with Primitive Lists

Implement a Contiguous Memory Allocator with Primitive Lists Simulate an allocator over the contiguous address range [0, capacity), initially one free...

Coding & Algorithms
8
0
99 people solved
Feb 19, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Implement 1NN with NumPy

This question evaluates implementing a 1-nearest-neighbor classifier with NumPy, testing skills in vectorized numerical computation, distance metrics,...

Machine LearningML Coding
317
4
2999 people solved
May 19, 2026
Anthropic logo
Anthropic
Medium
Software EngineerSenior+ Locked

Discuss Ethical Judgment and Unwanted Work

This behavioral interview question evaluates self-awareness, ethical judgment, and the ability to influence peers without relying on authority — core ...

Behavioral & LeadershipEthics & ResponsibilityLeadership & Influence
83
0
581 people solved
Jun 14, 2026
Baseten logo
Baseten
Hard
Software Engineer Locked

Parallelize Blocking API Calls with a Thread Pool

Replace sequential blocking API calls with a bounded thread pool while preserving each result's input association and return order. Define worker limi...

Software Engineering FundamentalsConcurrency
23
0
170 people solved
Jul 26, 2026
Booking logo
Booking
Medium
Software Engineer

Design an AI-Assisted Development Workflow

Explain how you use AI tools in software work and how you would integrate an AI agent into a practical development workflow. Use a concrete example, a...

Software Engineering FundamentalsAI AgentsPrompt Engineering
1
1
17 people solved
Aug 25, 2026
Sig logo
Sig
Easy
Data Scientist

Count Cookie Flavor Combinations

Count Cookie Flavor Combinations You will bake exactly 5 cookies using 4 available flavors. A flavor may be used for any number of cookies, including ...

Statistics & Math
1
0
13 people solved
Aug 16, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Path Resolution with Symbolic Links

This question evaluates a candidate's ability to implement filesystem-style path resolution, including handling relative and absolute paths, dot compo...

Coding & Algorithms
5
0
76 people solved
Jun 23, 2026
Amazon logo
Amazon
Medium
Software EngineerIntern

Find a valid dependency order

You are given n tasks labeled from 0 to n - 1 and a list of dependency pairs dependencies, where each pair [a, b] means task b must be completed befor...

Coding & AlgorithmsGraphs
22
0
261 people solved
Feb 15, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Implement a Batch Image Processor

This question evaluates a candidate's competency in image processing operations and parallel/concurrent programming, covering basic transformations (g...

Coding & AlgorithmsConcurrencyFile & Media Storage
28
0
210 people solved
Apr 1, 2026
Pinduoduo logo
Pinduoduo
Easy
Software Engineer

Discuss Your Background, Job-Change Motivation, and Offer Acceptance Factors

Prepare for a recruiter conversation about your background, motivation for changing jobs, interest in a role, and factors that could prevent you from ...

Behavioral & LeadershipMotivation & Fit
0
0
10 people solved
Sep 2, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Schedule Incremental Labeling Tasks

This question evaluates skills in designing stateful incremental schedulers, fairness and load-balancing algorithms, deterministic tie-breaking, and e...

Coding & AlgorithmsJob Scheduling & WorkflowsData Structure Design
26
0
255 people solved
Apr 8, 2026
Anthropic logo
Anthropic
Medium
Software EngineerSenior+ Locked

Discuss Leadership, Motivation, and AI Safety Values

Discuss leadership, mentoring, career motivation, AI safety, and a real values conflict with specific evidence. The answer should balance responsible ...

Behavioral & LeadershipMotivation & Fit
29
0
201 people solved
Jul 4, 2026
A
Addepar
Medium
Software Engineer

Design a Multi-Region Event Ticketing System

Design a Multi-Region Event Ticketing System Design an event ticketing system where users can view and search events and book seats. An event occurs a...

System Design
2
0
15 people solved
Aug 20, 2026
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