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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

Two weeks of coding, then system design, then mock rounds. Start day 1?

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
Rippling logo
Rippling
Hard
Software Engineer

Propagate Task Filtering Through Ancestors

Propagate Task Filtering Through Ancestors Tasks form a forest. Each task has a unique integer id, a parent_id or no parent, and a boolean directly_fi...

Software Engineering Fundamentals
22
0
191 people solved
Aug 17, 2026
Roblox logo
Roblox
Medium
Software Engineer

Design a Real-Time Shared To-Do List

Design a Real-Time Shared To-Do List Design a shared to-do list in which several people can create, edit, complete, delete, and reorder items while vi...

System Design
33
0
227 people solved
Aug 31, 2026
Waymo logo
Waymo
Medium
Machine Learning Engineer

Implement Softmax Cross-Entropy Forward and Backward Passes and a Training Loop

This is an "ML coding" round for a machine learning engineer role. Implement, from scratch, the forward pass and the backward pass of a softmax layer ...

Machine LearningML CodingNeural Networks & Training
11
0
78 people solved
Sep 10, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Project Deep Dive: Proving Technical Depth and Cross-Team Alignment

In a project deep-dive round, you present a significant project you worked on. The interviewer mostly lets you present, but interrupts with technical ...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
1
0
24 people solved
Sep 27, 2026
Together AI logo
Together AI
Easy
Software Engineer

Diagnose CPU Performance Problems on a Linux Server

A Linux server is slower than expected and CPU usage appears high. Describe the diagnostic path from a host overview to the responsible process, threa...

Software Engineering FundamentalsDebuggingOperating Systems
7
0
57 people solved
Sep 15, 2026
Citadel logo
Citadel
Easy
Software EngineerIntern

Reduce Hashing and Safely Delete Shared File Content

A file store should retain only one copy of identical file contents while allowing several paths to refer to that content. An initial design computes ...

System DesignData Structure DesignFile & Media Storage
18
0
187 people solved
Sep 3, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

AI Risk Values Round: Delaying a Risky Breakthrough, Worthless Equity, Persuasion

This is the culture round of an onsite loop at an AI lab that puts AI safety at the center of its hiring. Candidates describe safety as a make-or-brea...

Behavioral & LeadershipEthics & ResponsibilityConflict & Collaboration
2
0
44 people solved
Sep 18, 2026
Cohere logo
Cohere
Medium
Machine Learning Engineer

Replace a Heuristic Terminal Text Game's Python Logic With LLM Calls

In a live coding round you receive a text-based game that runs in the terminal, together with its Python implementation of several hundred lines, whic...

Software Engineering FundamentalsLLM Applications
3
0
34 people solved
Sep 22, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Compute Prefix Matrix Products

Practice cumulative left-to-right multiplication over a sequence of square matrices with exact ordered output.

Coding & Algorithms
53
1
415 people solved
Aug 23, 2026
Glean logo
Glean
Medium
Data Scientist

Expectation and Variance of a Sum of Two Random Variables, Including Covariance

In a hiring-manager interview for a data scientist role, the statistics question was: how do you compute the expectation and the variance of the sum o...

Statistics & MathProbability
1
0
26 people solved
Sep 30, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Paying Dashers Reliably When the Payment Service Is Unavailable

A delivery platform computes each Dasher's (delivery driver's) pay from their order events: pay accrues per minute in proportion to the number of orde...

System DesignPayments & LedgersDistributed Transactions & Idempotency
2
0
33 people solved
Sep 23, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Repair a Django Post-Creation Endpoint and Its React Contract

Repair a Django Post-Creation Endpoint and Its React Contract A Django and React blogging application has a bug: users complete all required fields bu...

Software Engineering Fundamentals
20
0
172 people solved
Aug 28, 2026
Amazon logo
Amazon
Medium
Software Engineer

Simulate one disc-flipping board game move across all eight directions

You are simulating one move of a two-player board game played on an m x n grid. Each cell is 0 (empty), 1 (a piece of player 1) or 2 (a piece of playe...

Coding & AlgorithmsSimulation & State Machines
4
0
35 people solved
Sep 24, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Find the Earliest Pair with a Target Sum

Find two distinct array elements that sum to a target, returning the valid pair with the earliest second index and then the earliest first index, or a...

Coding & AlgorithmsArrays & Strings
296
7
2947 people solved
Aug 19, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Mode, Median and Sort Across 10 Nodes with Send/Receive While Minimizing Traffic

A large collection of integers is spread across 10 machines (nodes), numbered 0 to 9. Every node runs the same program, knows its own number, and hold...

Software Engineering FundamentalsPartitioning & Consistent Hashing
5
0
42 people solved
Sep 18, 2026
Together AI logo
Together AI
Easy
Software Engineer

Diagnose Storage I/O Performance and Identify the Workload

A service is slow and storage I/O is suspected. Explain how you would use system metrics such as iostat, identify the responsible workload, and decide...

Software Engineering FundamentalsDebuggingOperating Systems
5
0
57 people solved
Sep 15, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design and Implement an Object-Oriented Pizza Ordering System

Design and implement an object-oriented simulation of a pizza ordering system. A customer builds an order made of one or more pizzas, and each pizza i...

Software Engineering FundamentalsLow-Level Design (OOP)
4
0
82 people solved
Sep 5, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Design an In-Memory Key-Value Cache

Design an in-memory key-value cache by fixing API, capacity, eviction, TTL, concurrency, and complexity semantics before coding.

Software Engineering Fundamentals
17
0
321 people solved
Aug 23, 2026
Google logo
Google
Medium
Software Engineer

Design a CI system that runs one million tests in ten minutes

Design a continuous integration (CI) system for a large codebase whose test suite has about 1,000,000 tests. When a developer submits a change, the sy...

System DesignCI/CD & DeploymentJob Scheduling & Workflows
3
0
30 people solved
Sep 21, 2026
Plaid logo
Plaid
Medium
Software Engineer

Validate Evaluation Chains and Resolve Boolean Outcomes

A collection of evaluations forms directed chains. Each evaluation points either to another evaluation or directly to the terminal value true or false...

Coding & AlgorithmsGraphs
11
0
108 people solved
Sep 1, 2026
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