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

"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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Palo Alto Networks

Medium

Software Engineer

Design an O(1) eviction cache

Implement an in-memory key–value cache with fixed capacity that evicts the least recently used entry when full. Support get(key) -> value or -1 if mis...

Data ScientistSenior+ Locked

Build House Price Model Responsibly

This question evaluates a data scientist's competencies in end-to-end supervised learning pipeline design—covering train/validation/test strategy, tar...

Machine LearningSupervised LearningFairness & Bias

Find recommended friend pairs by shared listening

Problem (SQL) You work on a music app and want to recommend new friend connections based on listening similarity. Tables Assume the following schemas:...

Data Manipulation (SQL/Python)SQL

AI Agent That Turns Scattered Health Records into a Trustworthy Patient Summary

Design an AI agent for healthcare that gathers a patient's medical history and produces a summary of it. Cover both the product and the system behind ...

Product Design & StrategyAI Product ManagementAI Agents

Design a Date-of-Birth Collection Flow for Meta's Apps

Meta wants to capture each user's date of birth. Walk through how you would design and roll out that capability. `hint Start from the purpose The reas...

Product Design & StrategyProduct Design & ImprovementPrivacy & Compliance

Implement a tennis score tracker

Design and implement a tennis game scoring function. Input: a stream of points won by players 'A' or 'B' (e.g., A, B, B, B, B). After each point, outp...

Compute matrix trace and support updates

Given an n x n integer matrix M, implement a function trace (M) that returns the sum of its main diagonal. Follow-ups: (a) If you receive q point upda...

Coding & AlgorithmsData Structure Design

266 people solved

Aug 13, 2025

Infer an Unknown Alphabet Order

You are given a list of words that is already sorted according to an unknown alphabet. Derive one valid ordering of the characters in that alphabet. R...

Count visible people to the right

Problem You are given an array heights of length n, where heights[i] is the height of the i-th person standing in a line from left to right. For each ...

PM Behavioral Question: Name a Pet Peeve and Show How You Respond to It

In a Microsoft product manager interview, you are asked to name your pet peeve: something that reliably irritates you. Give the answer you would give ...

Behavioral & LeadershipSelf-Awareness & Growth

Derive Coefficient and Covariance in Regression Analysis

Derive Coefficient and Covariance in Regression Analysis This statistics prompt tests correlation constraints, regression slope relationships, covaria...

Statistics & MathProbabilityRegression & Statistical Modeling

Determine winner in optimal-play card game

Determine winner in optimal-play card game Given a row of N cards with integer values (values may be positive, zero, or negative), two players alterna...

Coding & AlgorithmsDynamic Programming

Prioritize competing engineering requests

Scenario You are a Data Scientist/Analytics partner supporting multiple engineering teams. Two (or more) teams simultaneously ask you to prioritize th...

Behavioral & Leadership

Machine Learning Engineer

Implement ordering with dependency constraints

You are given n items labeled 0..n−1 and a list of precedence constraints edges[i] = [u, v] meaning u must appear before v. Return a valid ordering of...

Coding & AlgorithmsGraphsHeaps & Priority Queues

Software Engineer Locked

Implement an in-memory storage with TTL and scans

This question evaluates implementation of an in-memory two-level key->field->value store with TTL semantics, lexicographic scans and prefix filtering,...

Machine Learning EngineerIntern

Present and Defend Your Research, Then Explain Your Research Interests

This interview has no coding or algorithm question. The whole conversation is about your research, in three steps: 1. You introduce your own research....

Behavioral & LeadershipProject Deep DiveMotivation & Fit

Design a notification system

System Design: Multi-Channel Notification Platform Context Design a multi-tenant notification platform that delivers messages across email, SMS, and m...

System DesignReal-Time SystemsMessaging & Event-Driven

Frontend Engineer Locked

Executive-Round Behavioral: Proactive Decision-Making in Career and Projects

This question evaluates a candidate's ability to communicate agency and ownership across career choices and past project work. It tests whether someon...

Behavioral & Leadership

Build panel in SQL; run causal regression

Assume today is 2025-09-01 (UTC). Schema and small samples: users(user_id INT, country STRING, signup_date DATE, platform STRING) Sample: user_id | co...

Data Manipulation (SQL/Python)Causal InferenceSQL

Implement an asyncio-based chat server

Async Chat Server (Python asyncio) Build a TCP chat server using Python's asyncio. The server listens on a given port and serves many concurrent clien...

Coding & AlgorithmsConcurrency

496 people solved

Oct 25, 2025

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Tech Interview Questions

Design an O(1) eviction cache

Build House Price Model Responsibly

Find recommended friend pairs by shared listening

AI Agent That Turns Scattered Health Records into a Trustworthy Patient Summary

Design a Date-of-Birth Collection Flow for Meta's Apps

Implement a tennis score tracker

Compute matrix trace and support updates

Infer an Unknown Alphabet Order

Count visible people to the right

PM Behavioral Question: Name a Pet Peeve and Show How You Respond to It

Derive Coefficient and Covariance in Regression Analysis

Determine winner in optimal-play card game

Prioritize competing engineering requests

Implement ordering with dependency constraints

Implement an in-memory storage with TTL and scans

Present and Defend Your Research, Then Explain Your Research Interests

Design a notification system

Executive-Round Behavioral: Proactive Decision-Making in Career and Projects

Build panel in SQL; run causal regression

Implement an asyncio-based chat server

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