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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
Capital One logo
Capital One
Medium
Data Scientist

Choose Evaluation Metrics and a Decision Threshold for a Binary Classifier

During a resume deep dive on a project in which you trained a binary classifier, the interviewer asks how you evaluated the model and, because the app...

Machine LearningModel Evaluation
0
0
5 people solved
Oct 23, 2026
Capital One logo
Capital One
Medium
Data Scientist

Analyze Subscription, Insurance, App, and Card Cases

You are in a Data Scientist "power day" interview for a product analytics role. The interviewer gives you four independent business cases. For each on...

Analytics & ExperimentationBusiness Case Analysis
43
0
774 people solved
Apr 12, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

C++ vs Go for Backend Services: Memory, Concurrency and Trade-offs

Compare C++ and Go. Explain the main differences between the two languages and when you would choose each one, for example for the backend services th...

Software Engineering FundamentalsProgramming LanguagesConcurrency
3
0
45 people solved
Sep 25, 2026
Google logo
GoogleAmazonSprinklr
Hard
Software Engineer

Count Starts That Reach the End under Alternating Ordered Jumps

Problem From index i, every jump goes to a larger index j. Odd-numbered jumps choose the smallest value arr[j] at least arr[i]; even-numbered jumps ch...

Coding & AlgorithmsDynamic ProgrammingSorting
1
0
17 people solved
Snapchat logo
Snapchat
Medium
Software Engineer

Design a Multi-Region CI/CD System with Separate Control and Data Planes

Design a CI/CD system in which the control plane is separated from the data plane. The system takes code changes through build and test, produces rele...

System DesignCI/CD & DeploymentFault Tolerance & Failover
6
0
56 people solved
Jul 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

A Disagreement That Changed Your Mind

Prepare a behavioral answer about changing your mind after a substantive disagreement, with clear evidence, commitment, outcome, and learning.

Behavioral & Leadership
3
0
66 people solved
Aug 12, 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
38
0
444 people solved
Feb 15, 2026
Agoda logo
Agoda
Easy
Data EngineerSenior+ Locked

Find the Longest Calendar-Day Streak with All Employees Present

Identify dates when every employee is present and compute the longest consecutive streak, treating missing attendance as a gap.

Data Manipulation (SQL/Python)SQL
7
0
72 people solved
Sep 11, 2026
AMD logo
AMD
Medium
Software Engineer Locked

Trace an LLM Request Through a Paged-KV Inference Engine

Trace LLM inference from request admission through prefill and decoding, explaining paged KV block tables, continuous batching, cache lifetime, and la...

ML System DesignLLM Inference & ServingCaching
3
0
33 people solved
Sep 14, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Implement a persistent sharded key-value store

Problem Implement a simple key–value store that persists data on disk. You must store the data in fixed-size shards, where each shard is saved in one ...

Coding & AlgorithmsKey-Value Stores
103
2
1313 people solved
Nov 24, 2025
Roblox logo
Roblox
Medium
Software Engineer

Implement a sliding-window rate limiter

Implement an in-memory sliding-window rate limiter. You are given a stream of requests, each with a timestamp in milliseconds. Part 1: Per-user limit ...

Coding & AlgorithmsData Structure DesignRate Limiting
80
1
738 people solved
Jan 24, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Design a Payment System: Time-Boxed High-Level Design

Design a payment system that lets a product accept payments from its users: a user checks out, is charged, and the purchase is confirmed only once the...

System DesignPayments & LedgersDistributed Transactions & Idempotency
2
0
24 people solved
Sep 10, 2026
Ramp logo
Ramp
Medium
Software Engineer Locked

Find a User's Airport at a Given Time from Flight Records

This Ramp software engineering question tests timeline reasoning from flight records to determine a user's airport at a given time. It is useful for p...

Software Engineering FundamentalsBinary Search
42
1
605 people solved
Jul 2, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimum Cars for Rental Requests

You receive rental requests, each with a unique request identifier, pickup time, and return time. Work through the function contract, boundary cases, ...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
25
0
163 people solved
Aug 1, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer Locked

Maximize Element Frequency with Limited Increments

Find the largest attainable element frequency after a limited number of increment operations using an efficient ordered-window approach.

Coding & Algorithms
10
0
79 people solved
Aug 15, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Fewest Buses to Ride Between Two Stops on Looping Bus Lines

A city runs several bus lines. Each line drives a fixed loop of stops and repeats it forever, so a rider who boards a line can stay on from any of its...

Coding & AlgorithmsGraphs
5
0
45 people solved
Jul 13, 2026
Waymo logo
Waymo
Hard
Software Engineer

Find a Repeating Vehicle Program Under Fuel and Memory Limits

Find a short program for a vehicle on a grid. The vehicle starts at a specified interior cell with 100 fuel units. It can move up, down, left, or righ...

Coding & AlgorithmsSimulation & State MachinesBacktracking & Recursion
7
0
56 people solved
Jun 27, 2026
Instacart logo
Instacart
Easy
Software Engineer Locked

Debug Search and Stock Behavior in a Library Application

Debug a library application’s incomplete search and stock displays by reproducing symptoms, tracing API behavior, checking query semantics, and valida...

Software Engineering FundamentalsDebuggingAI-Assisted Development
12
1
75 people solved
Sep 18, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Design a High-Demand Event Ticket Marketplace

Design a ticket marketplace that handles search, expiring holds, payment uncertainty, and extreme onsale spikes without overselling inventory. Reason ...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
23
0
250 people solved
Jul 8, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Reason About Binary Search with One-Call-Delayed Feedback

Analyze binary search when each comparison response belongs to the previous guess rather than the current call. The exercise focuses on startup and fl...

Software Engineering Fundamentals
35
0
315 people solved
Aug 18, 2026
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