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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Google logo
Google
Medium
Software Engineer Locked

Earliest Time a Friendship Network Is Fully Connected with Friend and Unfriend Events

Given an unsorted log of timestamped friend and unfriend events among n people, return the earliest time at which everyone is connected through chains...

Coding & AlgorithmsGraphs
25
2
369 people solved
Sep 12, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement a scheduler that fits deployments into allowed deployment windows

In an online assessment you implement a deployment window scheduler. Deployments may run only inside allowed deployment windows, and the scheduler dec...

Software Engineering FundamentalsIntervals & Scheduling
1
0
12 people solved
Oct 21, 2026
Cresta logo
Cresta
Medium
Software Engineer

Implement an In-Memory File Storage Class with Unique IDs and Duplicate-Name Suffixes

Implement an in-memory file storage service as a single class, FileStorage, in a language of your choice. The interviewer gives only the description b...

Software Engineering FundamentalsData Structure DesignTesting & Quality
0
0
7 people solved
Oct 26, 2026
Stripe logo
Stripe
Hard
Software EngineerNew Grad

Debug an HTTP Client That Hangs After a 307 Redirect With a Streamed Request Body

You are given a copy of Requests, the open-source Python HTTP client library, into which a defect has been introduced, along with its test suite. A us...

Software Engineering FundamentalsDebuggingAPI Integration & HTTP Clients
5
0
86 people solved
Aug 14, 2026
Mercor logo
Mercor
Medium
Software Engineer

Probability That One Customer's Two Coffees Beat Another's Two

A coffee shop's drinks vary in quality from cup to cup. Customer A and customer B each buy two cups. What is the probability that A's two cups taste b...

Statistics & MathProbabilityPuzzles & Brainteasers
7
0
51 people solved
Oct 4, 2026
Pinterest logo
Pinterest
Hard
Software Engineer Locked

Behavioral Round: Success Metrics, Slow Teammates, Team Health, Feedback and Conflict

Prepare concise answers for a software engineer behavioral round covering how you defined a project's success metrics, leading and communicating with ...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
5
0
71 people solved
Sep 19, 2026
Robinhood logo
Robinhood
Medium
Product Manager

Robinhood Home Loan Offering: Segment, Down Payment Journey and Build-vs-Partner

You are a product manager at Robinhood, the investing app known for commission-free trading. Design a mortgage product for Robinhood: who it is for, w...

Product Design & StrategyProduct SenseProduct Strategy
2
0
21 people solved
Oct 14, 2026
Google logo
Google
Medium
Software Engineer

How You Prioritize When You Have a Large Amount of Work

In a behavioral interview for a software engineer role at Google, you are asked: if you have a large amount of work, how do you prioritize? Explain yo...

Behavioral & LeadershipOwnership & ExecutionPrioritization & Tradeoffs
4
2
53 people solved
Oct 2, 2026
MongoDB logo
MongoDB
Medium
Software Engineer

Implement a Promise Class in JavaScript with then Chaining, catch and finally

Implement, in plain JavaScript and without using the built-in Promise, a class MyPromise that provides the core functionality of a promise. The report...

Software Engineering FundamentalsJavaScript & TypeScript
1
0
9 people solved
Oct 31, 2026
xAI logo
xAI
Medium
Machine Learning EngineerNew Grad Locked

Dynamic Batching Decode Loop for a Mock Language Model with Slot Refilling

An LLM inference coding question: write the generation loop for a mock language model that returns one next token per sequence in a batch. Requests fi...

Software Engineering FundamentalsLLM Inference & Serving
14
0
115 people solved
Sep 5, 2026
Hudson River Trading logo
Hudson River Trading
Easy
Software EngineerNew Grad

Smallest Integer Point Lit by the Most Street Lamps on a Line

Street lamps stand along a straight road, which is modeled as the number line. Each lamp has a position c and a radius r, and it lights every point x ...

Coding & AlgorithmsIntervals & SchedulingSorting
10
0
145 people solved
Jul 30, 2026
Google logo
Google
Medium
Software Engineer

Grid Reachability From Start to Target With Impassable Water Cells

You are given an N x N grid. One cell is the start S, one cell is the target T, some cells are water, and every other cell is land. Water cells cannot...

Coding & AlgorithmsGrids & Matrices
7
0
116 people solved
Sep 17, 2026
Indeed logo
Indeed
Medium
Software Engineer Locked

Implement Get and Insert in an Unrolled Linked List

Implement indexed get and insert in an unrolled linked list, preserving block capacity, occupancy, sequence order, and split behavior.

Coding & AlgorithmsLinked ListsData Structure Design
6
0
109 people solved
Sep 16, 2026
Reddit logo
Reddit
Medium
Machine Learning Engineer

Design a Comment-Likelihood Prediction System with a Focus on Feature and Model Serving

Design the machine-learning system behind comment likelihood on a large discussion platform where posts belong to communities: given a user and a post...

ML System DesignML Data Pipelines & Feature StoresMLOps & Model Serving
6
0
64 people solved
Sep 7, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Describe a Complex Cross-Functional Project

Tell me about a complex project that required you to work across functions. Explain what made the collaboration difficult, what you personally contrib...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
1
0
13 people solved
Oct 18, 2026
xAI logo
xAI
Medium
Software Engineer Locked

Hand-Write a Parallel Sort Using Multiple Worker Threads or Processes

A concurrency coding question that asks for a hand-written parallel sort: split an integer list across several worker threads or processes and return ...

Software Engineering FundamentalsConcurrencySorting
10
0
104 people solved
Sep 5, 2026
Asana logo
Asana
Medium
Software Engineer

Design a Real-Time Collaborative Document Editor With Version History

Design a browser-based document editor, comparable to Google Docs, in which several people can open the same document and type into it at the same tim...

System DesignReal-Time SystemsConsistency & Availability
5
0
45 people solved
Sep 10, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Locate Cars with a Boolean Square-Scan API

Define and analyze a car-location search using a Boolean square scanner, with finite-grid subdivision, boundary rules, query cost, and limits on exact...

Software Engineering FundamentalsGrids & MatricesBacktracking & Recursion
22
0
152 people solved
Aug 30, 2026
Rippling logo
Rippling
Medium
Software Engineer

Tell Me About a Time You Gave Critical Feedback to Someone

Tell me about a time when you gave critical feedback to another person. In the reported round this was the only behavioral question, asked after a dee...

Behavioral & LeadershipConflict & Collaboration
0
0
13 people solved
Oct 23, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Return the K Smallest Pairwise Products of Two Sorted Arrays

You are given two integer arrays nums1 and nums2, each sorted in non-decreasing order, and an integer k. Every pair of indices (a, b) with 0 <= a < le...

Coding & AlgorithmsHeaps & Priority Queues
11
1
161 people solved
Sep 24, 2026
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