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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
Stripe logo
Stripe
Medium
Product Manager

Reducing Payment Fraud for Stripe Merchants Without Raising False Declines

You are a product manager at Stripe. How would you make Stripe's fraud detection better without getting in the way of genuine payments? Explain which ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
2
0
20 people solved
Aug 23, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Scale Duplicate File Detection

This question evaluates system-design, performance-diagnosis, and distributed-systems competencies, focusing on identifying bottlenecks through measur...

System DesignFile & Media StorageFault Tolerance & Failover
52
0
654 people solved
May 9, 2026
Powertown logo
Powertown
Medium
Software Engineer

Early-Stage Startup Fit: Background, Motivation and Small-Team Ownership

In the first conversation of a software engineer interview loop at an early-stage startup, the interviewer explores your background, your motivation a...

Behavioral & LeadershipMotivation & FitOwnership & Execution
0
0
3 people solved
Nov 2, 2026
NVIDIA logo
NVIDIA
Medium
Data EngineerSenior+

Design a GPU Telemetry Collection and Analytics Platform

Design a platform that collects GPU telemetry from a large compute environment and exposes both high-level trend analytics and low-level drilldowns. T...

System Design
13
1
120 people solved
May 3, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Yandex

Medium
Software Engineer Locked

Find the Longest Continuous Increasing Subsequence

Find the length of the longest strictly increasing contiguous run in an integer array. The prompt distinguishes a continuous subarray from a non-conti...

Coding & AlgorithmsArrays & Strings
20
1
270 people solved
Amazon logo
Amazon
Easy
Data ScientistSenior+

Design and evaluate a RAG system

You are interviewing for an L5 Data Scientist role focused on LLM applications. Design a retrieval-augmented generation (RAG) system for an internal q...

Machine LearningRetrieval-Augmented GenerationEmbeddings & Vector Search
32
0
240 people solved
Jan 12, 2026
Valon logo
Valon
Medium
Software Engineer

Design a Loan System with Borrower Repayments and Periodic Investor Payouts

Design the backend of a loan system. Borrowers hold loans and make repayments on them, and the system periodically pays out to the investors who own t...

System DesignPayments & LedgersDistributed Transactions & Idempotency
12
0
87 people solved
Apr 22, 2026
Hudson River Trading logo
Hudson River Trading
Hard
Software Engineer Locked

Explain Large Memory Allocation, Swap, and C++ Inline Trade-offs

This Hudson River Trading software engineering question probes large memory allocation, swap behavior, and C++ inline trade-offs. It prepares candidat...

Software Engineering FundamentalsOperating SystemsMemory Management
51
1
391 people solved
Jul 2, 2026
Capital One logo
Capital One
Easy
Business AnalystSenior+

Should a Restaurant Partner with Groupon?

A restaurant is deciding whether to partner with a daily-deals platform such as Groupon. You are asked to work through the unit economics and make a r...

Analytics & ExperimentationBusiness Case Analysis
124
0
1154 people solved
Jan 21, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Assess an AI Research Organization and Explain Your Fit

Compare an AI research organization with other labs, assess a recent action using evidence, and explain why its role fits your experience and interest...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
3
0
50 people solved
Aug 19, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Bloomberg, Meta, LinkedIn, NVIDIA, Oracle, Josh Technology

Medium
Software Engineer

Rotate a List Right by a Large Count

Problem Rotate a singly linked list to the right by k positions and return its resulting head. One right rotation moves the last node to the front. Pr...

Coding & AlgorithmsLinked Lists
1
0
10 people solved
Ramp logo
Ramp
Medium
Software Engineer Locked

Find User Airport at a Time

This question evaluates the ability to model and query time-interval flight data for multiple users, testing skills in data structures, sorting and se...

Coding & Algorithms
14
0
180 people solved
May 26, 2026
Coinbase logo
Coinbase
Medium
Product Manager

Coinbase feature that helps new crypto buyers grasp risk before they invest

You are a product manager at Coinbase, the cryptocurrency exchange. Design something in the Coinbase product that helps people who are new to crypto g...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
1
0
20 people solved
Oct 2, 2026
Capital One logo
Capital One
Easy
Software Engineer

Reduce Consecutive Digit Groups until the String Is Short Enough

Problem You are given a digit string s and an integer k. While s has more than k characters, perform a round: 1. Split s from left to right into conse...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings
0
0
13 people solved
Coreweave logo
Coreweave
Medium
Software Engineer Locked

Design a Human Workflow Distribution System

This Coreweave system design question evaluates a human workflow distribution system with queueing, assignment, and progress tracking concerns. It is ...

System DesignJob Scheduling & WorkflowsDistributed Coordination
18
0
238 people solved
Jul 2, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Resolve a Variable Through Literal and Reference Assignments

Resolve a target variable through an acyclic chain of named assignments until reaching an integer literal, independent of definition order.

Coding & AlgorithmsGraphs
9
0
74 people solved
Sep 11, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Quantitative Trader

Probability Two Randomly Started Flower Bloom Periods Overlap

Two kinds of flowers will each begin blooming on a random day within the next $D$ days, independently of each other. Once it starts, the first kind st...

Statistics & MathProbability
4
0
44 people solved
Sep 19, 2026
Robinhood logo
Robinhood
Medium
Backend Engineer

Describe a Failure and the Change It Prompted

Tell me about a failure in your work. Explain what you were responsible for, what went wrong, how you responded, and what you changed afterward. Const...

Behavioral & LeadershipFailure & Learning
1
0
9 people solved
Sep 29, 2026
Vercel logo
Vercel
Medium
Software Engineer Locked

Count Hits in the Past Five Minutes

Implement a five-minute hit counter with ordered timestamped operations, repeated hits, and an explicit 300-second expiration boundary.

Coding & AlgorithmsData Structure DesignStacks & Queues
10
0
87 people solved
Sep 12, 2026
Shopify logo
Shopify
Medium
Software Engineer Locked

Bank Account Simulation Class With Self-Written Tests at 90% Coverage

A pair-programming exercise: implement a class that simulates bank account operations, write your own tests reaching at least 90% coverage, and then e...

Software Engineering FundamentalsTesting & QualityLow-Level Design (OOP)
5
0
118 people solved
Sep 7, 2026
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