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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
Discord logo
Discord
Medium
Software EngineerSenior+ Locked

Design a Local Leader Election System

This question evaluates distributed systems skills—specifically leader election, failure detection, state propagation, and the ability to design and i...

System DesignDistributed CoordinationFault Tolerance & Failover
18
1
323 people solved
May 16, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design guardrails and fallback for LLM reliability

This question evaluates a candidate's ability to design safety and reliability layers for LLM-driven production systems, covering guardrails, input/ou...

System DesignLLM ApplicationsFault Tolerance & Failover
84
1
876 people solved
Feb 11, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Resolve Ambiguous Requirements Before Building

Practice answering an engineering behavioral question about ambiguous or incomplete requirements without inventing product behavior. Use a concrete de...

Behavioral & Leadership
8
0
65 people solved
Aug 3, 2026
Scale AI logo
Scale AI
Easy
Software Engineer Locked

Present a Metrics-Driven Technical Project

Present a real technical project so a general software-engineering audience can understand its problem, architecture, tradeoffs, and impact. Clarify y...

Behavioral & Leadership
15
0
104 people solved
Jul 27, 2026
DoorDash logo
DoorDash
Hard
Data Scientist

Design and analyze a switchback experiment

Design and Analyze a Switchback Experiment: Reducing Cold-Food Incidents for Bike Couriers You are a data scientist on a delivery-marketplace team. A ...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
77
0
520 people solved
Oct 13, 2025
Optiver logo
Optiver
Hard
Software Engineer

Design a topic-based news subscription system

Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...

System DesignSearch & Feed SystemsRate Limiting
90
0
1577 people solved
Sep 6, 2025
Anthropic logo
Anthropic
Medium
Product Manager

Hallucination Playbook for a Live LLM Product: Measurement, Safeguards and UX

A generative AI model is live in a product that real people use, and it sometimes hallucinates. How would you handle that? `hint Tie the response to t...

Machine LearningAI Product ManagementLLM Applications
2
0
24 people solved
Apr 12, 2026
Decagon logo
Decagon
Medium
Software Engineer AI Locked

Design an AI Gateway

This question evaluates system design competencies for a multi-tenant AI gateway, including architectural design, unified API and authentication patte...

System DesignLLM ApplicationsAPI Design
85
0
588 people solved
Feb 17, 2026
Instacart logo
Instacart
Medium
Machine Learning Engineer

Find the First and Last Target Positions with Binary Search

Given a nondecreasing integer array and a target, return the zero-based indices of its first and last occurrence. Return [-1,-1] when the target is ab...

Coding & AlgorithmsBinary Search
0
0
13 people solved
Jul 15, 2026
Google logo
GoogleMicrosoftAmazonMeta

Also asked at Amazon, Meta

Hard
Software Engineer

Longest Proper Prefix That Is Also a Suffix

Problem Return the longest nonempty prefix of s that is also a suffix, excluding s itself. The prefix and suffix occurrences may overlap. Return the e...

Coding & AlgorithmsString Algorithms
0
0
10 people solved
ThoughtSpot logo
ThoughtSpotMicrosoftGoogleMorgan Stanley

Also asked at Google, Morgan Stanley

Medium
Software Engineer

Choose a Maximum-Score Conflict-Free Team

Problem Each player has the corresponding entries in scores and ages. A younger player conflicts with an older player only when the younger player’s s...

Coding & AlgorithmsDynamic ProgrammingSorting
1
0
9 people solved
Google logo
Google
Medium
Software EngineerSenior+

Explain Your Most Meaningful Project Contribution

Explain Your Most Meaningful Project Contribution Tell the interviewer about a project you are most proud of. Explain why it mattered, what you person...

Behavioral & Leadership
3
0
74 people solved
Aug 6, 2026
Meta logo
Meta
Hard
Software Engineer Locked

Respond to Critical Feedback and Show the Change

Prepare a behavioral interview story about receiving critical feedback, evaluating the underlying concern, and making a concrete change. Show how late...

Behavioral & LeadershipSelf-Awareness & Growth
3
0
67 people solved
Aug 3, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Evaluate Symbol Expressions

This question evaluates the ability to parse and evaluate arithmetic expressions with symbol references, perform recursive dependency resolution, and ...

Coding & Algorithms
14
1
193 people solved
May 2, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Lead Through Technical Difficulty and Project Conflict

Prepare one coherent example that shows how you led people through a technically difficult project, resolved a project conflict, and delivered an outc...

Behavioral & Leadership
9
0
89 people solved
Aug 4, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning Engineer

Generate uniform 0–6 from biased coin

You are given a function: - int getRandom01Biased() returns 0 with probability p and 1 with probability 1-p, where p is unknown and may be any value i...

Coding & AlgorithmsMath & Number TheoryProbability
31
0
257 people solved
Feb 18, 2026
Indeed logo
Indeed
Medium
Machine Learning Engineer Locked

Implement MSE Loss and Linear Regression from Scratch

Implement the mean squared error loss and a linear regression model with fit and predict methods, written from scratch rather than with a library mode...

Machine LearningML CodingML Fundamentals
3
0
42 people solved
Sep 3, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Implement GPU credit ledger

You manage a GPU pool with per-tenant credits. Given a list/stream of events where each event adjusts a tenant’s credit balance by a signed integer (p...

Coding & AlgorithmsData Structure DesignPayments & Ledgers
87
0
818 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Software EngineerIntern

Find the Largest Rating Threshold Supported by K Instances

Given an array of integer instance ratings, return the largest integer k such that at least k instances have ratings greater than or equal to k. Input...

Coding & AlgorithmsArrays & StringsSorting
4
0
72 people solved
Jan 8, 2026
Jump Trading logo
Jump Trading
Medium
Quantitative Researcher Locked

Plan the First Ninety Days in a New Trading Market

You are asked to lead research for a new market such as crypto. Define the target user and problem, choose measurable goals, prioritize the experience...

Product Design & StrategyPortfolio Construction & Alpha Research
4
0
54 people solved
Aug 8, 2026
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