Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.1k

Companies

579

Updated

10.10.2026

12.1k Questions 579 Companies10.10.2026

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

Google

Medium

Software Engineer

Determine if a 14-tile hand is winning

You are given an integer array tiles of length 14 representing a Mahjong-like hand. Each integer is a tile value from 1 to 9 (single suit). You may re...

Coding & AlgorithmsBacktracking & Recursion

Implement a Word Guessing Game

Implement a four-letter word guessing game. You are given: - A dictionary containing valid four-letter English words. - A target word selected from th...

Data Scientist Locked

Handle repeated churn in SQL

This question evaluates proficiency in time-based data manipulation and analytics, including handling repeated churn and resubscription, interval logi...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis

Design mobile check deposit system

System Design: Mobile Check Deposit for a Consumer Banking App Design a production-grade Remote Deposit Capture (RDC) feature that lets retail custome...

System DesignPayments & LedgersDistributed Transactions & Idempotency

Software Engineer Locked

Check Whether Digits Are Monotone Increasing

Check whether a non-negative integer's decimal digits are non-decreasing from left to right. Cover zero, single-digit values, repeated digits, and an ...

Predict bike demand and avoid overfitting

You are given historical data for a city bike-sharing system. Available fields include station_id, hourly timestamp, number of bike pickups and return...

Machine LearningML FundamentalsFeature Engineering

Handle value conflicts and disagreeing with leadership

Behavioral / Values prompts Answer the following with specific examples (use the STAR method): 1. Have you ever made a decision that was “politically ...

Behavioral & LeadershipEthics & ResponsibilityConflict & Collaboration

Software EngineerSenior+

Design an Internal Metrics Ingestion Service

Design an Internal Metrics Ingestion Service Design an internal service that collects metrics through client-side agents and supports reliable ingesti...

Software Engineer Locked

Implement a Rolling-Window Rate Limiter

Implement a single-process rolling-window rate limiter where only accepted requests consume capacity. Define exact boundary behavior, expire old times...

Software Engineering FundamentalsData Structure DesignRate Limiting

Software EngineerSenior+

Explain Linux Command Execution, Filesystems, and Isolation

Explain Linux Command Execution, Filesystems, and Isolation Walk through the operating-system mechanisms behind common Linux commands and isolation ch...

Software Engineering Fundamentals

Software Engineer Locked

Design a Rotating Workplace Food-Ordering Service

Design a workplace food-ordering service with daily restaurant rotation, customizable menus, payment boundaries, and safe checkout when items or optio...

Software Engineer Locked

Count Pairs of Cyclically Equivalent Integers

Count unordered index pairs whose non-negative integers have decimal strings equivalent under cyclic rotation. The algorithm challenge emphasizes a pr...

Coding & AlgorithmsArrays & Strings

Implement Expiring LRU Cache

Implement an in-memory key-value cache with least-recently-used eviction and per-entry expiration. The cache has a fixed positive capacity. Each inser...

Software Engineer Locked

Implement IP Address Arithmetic

This question evaluates proficiency in IP addressing, parsing and validation, binary/address-space arithmetic, CIDR subnet calculation, and formatting...

Software Engineer Locked

High Availability and Failover for a Primary-Replica Database

This question evaluates a candidate's understanding of database high-availability design, including replication semantics, failure detection, and fail...

System DesignFault Tolerance & FailoverConsensus & Replication

Explain a Project's Implementation and Design Decisions

Choose a project from your experience and explain how you implemented it. Walk through the main components and the path of a representative request or...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals

Assess an AI Research Organization and Explain Your Fit

Prepare an evidence-based explanation of your interest in an AI research organization. Compare it with other AI labs, assess a recent action it took, ...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making

Software Engineer Locked

Explain C++ Inline Semantics and Trade-Offs

Explain that C++ inline semantics permit suitable definitions across translation units but do not require call-site expansion. Evaluate compiler optim...

Software Engineering Fundamentals

Software Engineer Locked

Time-Based Key-Value Store

This question evaluates the ability to design a data structure that supports versioned storage and efficient point-in-time lookups. It tests binary se...

Member of Technical Staff, ML Systems

Implement an LRU Cache

Problem Implement a fixed-capacity least-recently-used cache supporting get(key) and put(key, value). get returns the stored value or -1 when absent a...

Coding & Algorithms

44 people solved

Apr 15, 2026

Tech Interview Questions

Determine if a 14-tile hand is winning

Implement a Word Guessing Game

Handle repeated churn in SQL

Design mobile check deposit system

Check Whether Digits Are Monotone Increasing

Predict bike demand and avoid overfitting

Handle value conflicts and disagreeing with leadership

Design an Internal Metrics Ingestion Service

Implement a Rolling-Window Rate Limiter

Explain Linux Command Execution, Filesystems, and Isolation

Design a Rotating Workplace Food-Ordering Service

Count Pairs of Cyclically Equivalent Integers

Implement Expiring LRU Cache

Implement IP Address Arithmetic

High Availability and Failover for a Primary-Replica Database

Explain a Project's Implementation and Design Decisions

Assess an AI Research Organization and Explain Your Fit

Explain C++ Inline Semantics and Trade-Offs

Time-Based Key-Value Store

Implement an LRU Cache

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ML System Design

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