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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
Meta logo
Meta
Medium
Machine Learning EngineerIntern AI Locked

Derive Linear Regression Solution

This question evaluates understanding of one-dimensional linear regression estimation, the statistical derivation of the mean squared error objective ...

Machine Learning
13
0
97 people solved
Feb 8, 2026
xAI logo
xAI
Medium
Software Engineer

Token Bucket Rate Limiter with Lazy Refill Backed by a Cache

Token Bucket Rate Limiter with Lazy Refill Backed by a Cache You are building the enforcement layer of a rate limiter. Every user has a token bucket s...

Coding & Algorithms
7
1
63 people solved
Sep 23, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Optimize a compute kernel with a simulator

Performance Optimization Plan for a Compute Kernel Context You are given: - A compute kernel (single critical function or set of loops) to optimize. -...

System Design
22
0
294 people solved
Sep 6, 2025
Earnin logo
Earnin
Medium
Data AnalystSenior+

Resolve a Cross-Functional Data Disagreement

The source reported repeated questions about cross-functional collaboration in a senior-level hiring-manager screen, but not their exact wording. Use ...

Behavioral & Leadership
2
0
34 people solved
Apr 20, 2026
Google logo
Google
Medium
Data ScientistSenior+

When do you use mixed-effects models

You are modeling a user outcome (e.g., watch time or retention) across many countries and many users. Observations are nested (multiple days per user;...

Machine LearningRegression & Statistical Modeling
23
0
241 people solved
Nov 24, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Why Anthropic and its values?

This interview evaluates culture fit, value alignment, and critical thinking for Anthropic. Prepare one coherent discussion that addresses all of the ...

Behavioral & LeadershipMotivation & FitEthics & Responsibility
54
0
391 people solved
Oct 19, 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
Apple logo
Apple
Medium
Software Engineer Locked

Work Productively with Someone Who Disagrees

Describe a meaningful disagreement with someone you still needed to work with closely. Show how you understood their concerns, adjusted your own appro...

Behavioral & Leadership
2
0
30 people solved
Jun 3, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Implement transactional key–value store

Design and implement an in-memory key–value store that supports transactions and nested transactional blocks. Your system must process a stream of com...

Coding & AlgorithmsData Structure DesignTransactions & Isolation
10
1
154 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Data Engineer

Design batch and streaming ETL architecture

Design batch and streaming ETL architecture System Design: End-to-End Data Platform for Product Analytics (Batch + Near-Real-Time) Context Design a sc...

System DesignETL & Data PipelinesBatch & Stream Processing
84
0
640 people solved
Jul 15, 2025
Apple logo
Apple
Medium
Machine Learning Engineer

Design App Store search

Design the search system for a mobile app marketplace similar to an app store. Users enter short queries such as 'photo editor', 'budget tracker', or ...

ML System Design
9
0
93 people solved
Dec 17, 2025
Hebbia logo
Hebbia
Medium
Software Engineer

Design a Multi-Agent Chat Backend

Design the backend for an LLM-powered chat product used by customers in a financial-technology setting. The interviewer will show a simple demo of a c...

System Design
7
0
73 people solved
Feb 6, 2026
Lyft logo
Lyft
Hard
Software Engineer

Design a Donation Platform

Question Design an online donation platform that lets users discover and contribute to charity campaigns or nonprofit organizations. Payment execution...

System DesignPayments & LedgersDistributed Transactions & Idempotency
21
0
187 people solved
Apr 24, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Design Duplicate File Detection

This question evaluates system design and storage engineering skills, including scalable file-processing, efficient I/O and resource management, corre...

System DesignFile & Media StorageSystem Design Fundamentals
53
0
394 people solved
Apr 3, 2026
Grammarly logo
Grammarly
Medium
Software Engineer Locked

Reverse a Singly Linked List

Reverse a finite singly linked list represented by nested two-item Python lists. Reuse the existing node objects without allocating replacements, and ...

Coding & Algorithms
6
0
36 people solved
Jun 19, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Design a high-throughput distributed rate limiter

Question Design a high-throughput, distributed rate-limiting service that runs across multiple regions with low latency and burst tolerance. The servi...

System DesignRate LimitingPartitioning & Consistent Hashing
19
0
336 people solved
Sep 6, 2025
Applied Intuition logo
Applied Intuition
Hard
Software Engineer

Track simulations and report timeouts

You are implementing a monitoring component for many concurrent simulations. Each simulation produces a stream of event objects of the form: - sim_id ...

Coding & Algorithms
5
0
69 people solved
Dec 8, 2025
Uber logo
Uber
Medium
Software Engineer

Design an object-oriented parking lot system

Design an object-oriented model for a parking lot management system. Requirements: - The parking lot has multiple levels; each level has multiple park...

Software Engineering FundamentalsLow-Level Design (OOP)
32
0
231 people solved
Nov 2, 2025
Databricks logo
Databricks
Hard
Data Scientist

Explain ROC-AUC vs PR-AUC tradeoffs

Question You trained a binary classifier that outputs predicted probabilities. Compare ROC-AUC and PR-AUC (the latter usually reported as Average Prec...

Machine LearningModel Evaluation
12
0
166 people solved
Dec 12, 2025
C3 AI logo
C3 AI
Hard
Data Scientist Locked

Explain an End-to-End ML Project to Mixed Audiences

Prepare an end-to-end ML project deep dive that covers problem framing, leakage-safe validation, a real challenge, deployment or handoff, impact, limi...

Behavioral & Leadership
0
0
13 people solved
Aug 15, 2026
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