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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
OpenAI logo
OpenAI
Medium
Software Engineer

Optimize C++ Performance with Provided Concurrency

Given a C++ codebase where threading components (threads, work queues, and synchronization primitives) are already provided, profile and optimize the ...

Coding & AlgorithmsProgramming LanguagesMemory Management
16
0
269 people solved
Sep 6, 2025
Capital One logo
Capital One
Medium
Software Engineer Locked

Design a geography-aware virtual card service

This question evaluates a candidate's ability to design secure, low-latency, geography-aware payment systems, covering distributed systems architectur...

System DesignPayments & Ledgers
72
0
552 people solved
Feb 12, 2026
Lambda logo
Lambda
Hard
Software Engineer

Design a cloud AI inference platform

System Design: Cloud AI Inference Platform for Real-Time and Batch Context Design a multi-tenant cloud platform that serves machine learning models fo...

ML System DesignMLOps & Model ServingGPU Infrastructure
15
0
264 people solved
Sep 6, 2025
Stripe logo
Stripe
Medium
Software Engineer Locked

Process Transactions and Compute Balances

This question evaluates a candidate's ability to implement stateful transaction processing, accurate integer bookkeeping across accounts and currencie...

Coding & Algorithms
5
0
79 people solved
Nov 21, 2025
Anthropic logo
Anthropic
Hard
Software Engineer

Compute an Exact Distributed Median with Limited Communication

Compute the exact median of values distributed across workers. Explain partitioning, parallel work, and communication cost using send/receive-style pr...

Software Engineering FundamentalsBatch & Stream ProcessingBinary Search
3
0
25 people solved
Mar 30, 2026
Asana logo
Asana
Medium
Software Engineer Locked

Design a Real-Time Like Counter for Collaborative Tasks

Design a real-time like counter for collaborative tasks with one active like per signed-in user. Cover idempotent mutations, authoritative counts, SSE...

System DesignReal-Time SystemsDistributed Transactions & Idempotency
15
0
304 people solved
Jul 16, 2026
Bloomberg logo
Bloomberg
Easy
Software Engineer

Minimize travel cost with two cities

You are scheduling candidates to attend an onsite interview. Each candidate i can fly to New York for cost c1[i] or to San Francisco for cost c2[i]. C...

Coding & AlgorithmsGreedySorting
20
2
158 people solved
Mar 11, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Design a secure trading app on AWS

Scenario Design a secure, Robinhood-like mobile/web application on AWS, with a deep dive into: 1. User profile management (account creation, authentic...

System DesignSystem Design FundamentalsAuthentication & Authorization
21
0
263 people solved
Oct 21, 2025
Amazon logo
Amazon
Easy
Software EngineerIntern Locked

Determine Whether One Person Can Attend Every Meeting

Determine whether one person can attend every meeting in a collection of half-open time intervals. This question checks overlap reasoning, endpoint se...

Coding & Algorithms
7
0
56 people solved
Aug 1, 2026
Okta logo
Okta
Medium
Software Engineer

Build an Auth0-protected MCP server

Hands-on OA: Build an MCP server secured by Auth0 JWTs You are asked to build a local HTTP service that implements a minimal MCP (Model Context Protoc...

Software Engineering FundamentalsAuthentication & Authorization
32
0
251 people solved
Dec 15, 2025
StubHub logo
StubHub
Medium
Software Engineer Locked

Design Composable Event Recommendations

This question evaluates a candidate's ability to design composable, extensible recommendation logic and ranking for a ticket marketplace, emphasizing ...

Coding & AlgorithmsLow-Level Design (OOP)Recommendation Systems
12
0
107 people solved
Mar 29, 2026
Suno logo
Suno
Medium
Software Engineer

Describe product usage, feedback, and music experience

Behavioral: Product Usage, Feedback, and Music Background Context You are interviewing for a Software Engineer role at a music-tech company. Assume th...

Behavioral & LeadershipMotivation & FitProduct Design & Improvement
40
0
284 people solved
Sep 6, 2025
Startups.Com logo
Startups.Com
Medium
Machine Learning Engineer

Implement common neural network layers in PyTorch

Implement the following neural-network building blocks from scratch in PyTorch (using only basic tensor ops such as matmul, sum, mean, var, exp, max, ...

Coding & AlgorithmsML CodingNeural Networks & Training
6
0
90 people solved
Mar 10, 2026
Jane Street logo
Jane Street
Easy
Quantitative TraderIntern

Four Fair Coins: Expected Payoff and Pricing Two Magic Wands

You play the following game: four fair coins are tossed at the same time. For every coin that lands heads, you are paid \$1. The interviewer walks you...

Machine LearningProbabilityPuzzles & Brainteasers
11
1
130 people solved
Sep 11, 2025
Fetch Rewards logo
Fetch Rewards
Medium
Data Scientist

Write SQL to verify quarterly sales decline

You are given a single dataset for a beverage company and must decide whether Q2 2024 truly declined. Write one standard SQL query that produces a com...

Data Manipulation (SQL/Python)
11
0
70 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Solve DFS grid and keypad problems

You may be asked to solve one or more DFS/backtracking problems: 1. Grid connectivity problem: Given an m x n grid where 1 represents land and 0 repre...

Coding & AlgorithmsGrids & MatricesBacktracking & Recursion
23
1
183 people solved
Mar 1, 2026
Google logo
Google
Medium
Software Engineer

Compute minimum number of rooms needed

Problem You are given a list of meetings, each with a start time and end time. A single room can host only one meeting at a time. Two meetings overlap...

Coding & AlgorithmsIntervals & Scheduling
29
1
455 people solved
Feb 12, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Model ads demand data for reporting

This question evaluates competencies in data modeling, ETL/ELT pipeline design, analytics warehousing, handling slowly changing dimensions, and high-v...

System DesignDimensional ModelingETL & Data Pipelines
44
0
371 people solved
Feb 4, 2026
Expedia logo
Expedia
Hard
Software Engineer

Solve three interview coding problems

This interview report described three coding tasks: 1. Generate a run-length spoken sequence Start with s1 = "1". To build the next term, read the ...

Coding & AlgorithmsArrays & StringsBacktracking & Recursion
9
0
127 people solved
Jan 6, 2026
Home Depot logo
Home Depot
Medium
Data Analyst

Debug row loss after SQL joins

You are reviewing a buggy SQL query used by a retail analytics team at a home-improvement company. The query is supposed to return daily promo sales f...

Data Manipulation (SQL/Python)SQLDebugging
12
1
161 people solved
Dec 15, 2025
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