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

Applied Intuition

Medium

Software Engineer

Implement an In-Memory Key-Value Store With BEGIN, COMMIT and ROLLBACK

Implement an in-memory key-value store that supports these commands: - SET key value: assign the value to the key, overwriting any existing value. - G...

Software Engineering FundamentalsData Structure DesignTransactions & Isolation

Software EngineerSenior+

Implement a Rate Limiter for CI Jobs Rather Than for API Requests

In a technical screen built around your experience with cloud infrastructure, Terraform and CI/CD, the interviewer asks how you would implement a rate...

Software Engineering FundamentalsRate LimitingDistributed Coordination

Frontend EngineerSenior+

Design a Fast Product Search Page: Search Input over an Unbounded Catalog Grid

Design the front end of a product search page. A search input sits at the top, and below it a grid shows the product catalog. When the user types a se...

System DesignWeb PerformanceState Management

182 people solved

Oct 3, 2026

Design an Ad Click Aggregator for Advertiser Click Reporting

Design an ad click aggregator. When a user clicks an ad, the system records the click and sends the user on to the advertiser's landing page. It aggre...

System DesignAds SystemsBatch & Stream Processing

Design a live and historical stock quote API fed by a redundant exchange trade feed

Design the market data API for a retail stock-trading app. Clients call two endpoints: - GET /quotes/{symbol}/live returns the real-time quote for one...

System DesignTrading SystemsCaching

Software EngineerSenior+

Maximize Index-Weighted Array Sum When Each Element Swaps at Most Once

You are given an integer array nums. You may swap elements, choosing any two positions for each swap, but every element may take part in at most one s...

Coding & AlgorithmsDynamic ProgrammingBit Manipulation

Merge Overlapping Collinear Lane Segments Given as Integer Point Lists

Lane geometry is given as a list of straight lane segments. Each segment is a list of integer points [x, y] that all lie on one straight line, listed ...

Coding & AlgorithmsIntervals & SchedulingMath & Number Theory

Leadership Principle Stories: Ownership, Dive Deep, Tight Deadline, Disagree and Commit

Answer four behavioral questions of the kind reported across this company's software engineering interview loops. There is no dedicated behavioral rou...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration

Software EngineerSenior+

Design a Neighborhood Newsfeed: Consistency Trade-offs and Paging a Black-Box Ranker

Design the home newsfeed for a neighborhood social network such as Nextdoor, where members see posts from their local community and scroll through the...

System DesignSearch & Feed SystemsCaching

Machine Learning EngineerIntern

Build a Labeled Training Dataset from Messy Order and Store Tables with an AI Assistant

In a one-hour AI-assisted coding round for a machine learning role, you work in a HackerRank environment that gives you five small datasets about orde...

Data Manipulation (SQL/Python)Feature EngineeringData Cleaning & Wrangling

Design a Scalable, Polite Web Crawler

Design a web crawler. Starting from a set of seed URLs, the system downloads each page, extracts the links it contains, adds newly discovered URLs to ...

System DesignSystem Design FundamentalsFault Tolerance & Failover

90 people solved

Oct 12, 2026

Medium

Machine Learning EngineerIntern

Implement Linear Regression with Batch Gradient Descent from Scratch

Implement linear regression trained with batch gradient descent, from scratch, in plain Python or NumPy and without a machine learning library. The as...

Machine LearningML CodingML Fundamentals

Frontend EngineerSenior+

Build a 2x3 React Feed Grid from Static Data, Then from an API, and Explain Your Hooks

Build a small React view that shows a list of feed items, similar to posts in a social feed, in a fixed six-cell grid: two rows of three equal-width c...

Software Engineering FundamentalsReact & UI FrameworksCSS & Layout

Match Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance

You are given one payment record and a list of invoice records, each encoded as a string. Parse them, find the invoice the payment should be applied t...

Software Engineering FundamentalsCode Quality & MaintainabilityPayments & Ledgers

Build a Fixed-Capacity Least-Recently-Used Cache with Constant-Time Get and Put

Implement a least-recently-used (LRU) cache that holds at most capacity entries. It supports two operations: - get(key): return the value stored for k...

Software Engineering FundamentalsData Structure DesignLinked Lists

Explain Performance Engineering and How to Build a Trustworthy GPU Benchmark

This round, for a GPU performance engineering team, had no coding: it was a conversation about your understanding of performance engineering and of be...

Software Engineering FundamentalsGPU Programming

Which Recipes Can Be Made When Ingredients Can Themselves Be Recipes

A kitchen has an unlimited stock of some basic supplies and a book of recipes. Each recipe has a unique name and a list of ingredients. An ingredient ...

Coding & AlgorithmsGraphs

Build a Small RAG Pipeline in a Notebook with Vectorized NumPy and pandas

Build a small retrieval-augmented generation (RAG) pipeline in a notebook. Given a set of documents and a user's question, the pipeline finds the pass...

Machine LearningRetrieval-Augmented GenerationPandas & Python Data

Software EngineerSenior+

Design a Scheduler with Prerequisites and Target Execution Plans

Design a task scheduler in three stages: support addTask and getNextTask; add prerequisites and task completion; then return an execution plan for a r...

Software Engineering FundamentalsJob Scheduling & WorkflowsGraphs

Design Idempotent Loan Payments and Investor Distribution

Design a simplified loan-payment system. A borrower makes a payment, and the system distributes that payment to investors. Money movement is performed...

System DesignPayments & LedgersAPI Integration & HTTP Clients

31 people solved

Oct 25, 2026

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Tech Interview Questions

Implement an In-Memory Key-Value Store With BEGIN, COMMIT and ROLLBACK

Implement a Rate Limiter for CI Jobs Rather Than for API Requests

Design a Fast Product Search Page: Search Input over an Unbounded Catalog Grid

Design an Ad Click Aggregator for Advertiser Click Reporting

Design a live and historical stock quote API fed by a redundant exchange trade feed

Maximize Index-Weighted Array Sum When Each Element Swaps at Most Once

Merge Overlapping Collinear Lane Segments Given as Integer Point Lists

Leadership Principle Stories: Ownership, Dive Deep, Tight Deadline, Disagree and Commit

Design a Neighborhood Newsfeed: Consistency Trade-offs and Paging a Black-Box Ranker

Build a Labeled Training Dataset from Messy Order and Store Tables with an AI Assistant

Design a Scalable, Polite Web Crawler

Implement Linear Regression with Batch Gradient Descent from Scratch

Build a 2x3 React Feed Grid from Static Data, Then from an API, and Explain Your Hooks

Match Payments to Invoices by Memo ID, Exact Amount, then Amount Tolerance

Build a Fixed-Capacity Least-Recently-Used Cache with Constant-Time Get and Put

Explain Performance Engineering and How to Build a Trustworthy GPU Benchmark

Which Recipes Can Be Made When Ingredients Can Themselves Be Recipes

Build a Small RAG Pipeline in a Notebook with Vectorized NumPy and pandas

Design a Scheduler with Prerequisites and Target Execution Plans

Design Idempotent Loan Payments and Investor Distribution

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