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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
Balyasny logo
Balyasny
Hard
Software Engineer Locked

Schedule Dependent Tasks on a Bounded Thread Pool

Design a bounded multithreaded scheduler that releases tasks after prerequisite completion, handles failures, and preserves dependency and task-state ...

System DesignJob Scheduling & WorkflowsConcurrency
3
0
48 people solved
May 25, 2026
Bloomberg logo
Bloomberg
Hard
Software Engineer

Design auth, session security, and top-N users

Web App Design: Authentication, Security, and Top-N Active Users Context: Build a browser-based web application where a user signs in and the page dis...

System DesignAuthentication & AuthorizationApplication Security
31
0
273 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Implement stream random sampling in Python

You are given an unbounded stream of items that cannot be stored entirely in memory. Write Python code to maintain a uniform random sample from the st...

Coding & AlgorithmsSampling & Estimation
13
0
113 people solved
Oct 12, 2025
Google logo
Google
Medium
Product Manager

Gemini Competitive Strategy to Take AI Assistant Share From ChatGPT

You are a PM on Gemini at Google. What strategy would you use to take market share from ChatGPT? `hint Find the battleground Market share can mean sev...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
6 people solved
Jul 13, 2026
Adobe logo
Adobe
Medium
Product Manager

Chrome for Laptops, Desktops and Tablets: Vision and a Phased Multi-Year Product Plan

You are the product manager for Google Chrome on large screens. Lay out a three-year innovation roadmap for the product. `hint Define the screen, then...

Product Design & StrategyRoadmapping & PlanningProduct Strategy
0
0
6 people solved
Feb 19, 2026
Scale AI logo
Scale AI
Medium
Software Engineer

Implement Hook and Modify UI Interactions

Task: Implement a custom React hook and wire UI interactions Context You are working in a React app that already includes a basic API module and a sim...

Software Engineering FundamentalsReact & UI Frameworks
16
0
208 people solved
Sep 6, 2025
Citadel logo
Citadel
Easy
Software Engineer

Explain role, motivations, values, and relocation expectations

Question This is a Citadel HR/recruiter screen for a Software Engineer role. The recruiter walks through a standard set of behavioral and logistics qu...

Behavioral & LeadershipMotivation & Fit
19
0
227 people solved
Sep 6, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Implement transactional key–value store

Design and implement an in-memory key–value store that supports transactions and nested transactional blocks. Your system must process a stream of com...

Coding & AlgorithmsData Structure DesignTransactions & Isolation
12
1
180 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Answer standard behavioral questions

Question Answer the standard behavioral questions asked in an Instacart Software Engineer onsite. Use the STAR framework and make your specific impact...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
19
0
221 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Check if each recipe is a contiguous subsequence

This question evaluates proficiency in algorithmic sequence matching and contiguous subarray detection, encompassing array/string pattern matching and...

Coding & Algorithms
7
0
87 people solved
Jan 1, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Payment Processing System

This system design question evaluates a candidate's ability to architect a backend payment system that stays correct under retries, concurrency, and p...

System DesignPayments & LedgersDistributed Transactions & Idempotency
12
0
159 people solved
Jun 14, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Describe cross-team collaboration on past projects

In a behavioral interview with an engineering manager, you are asked to discuss your previous project experience, with a particular focus on cross-tea...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
11
0
98 people solved
Dec 8, 2025
Bloomberg logo
Bloomberg
Medium
Software Engineer

Implement anagram check and odd-even linked list

You are given two independent coding tasks. Task 1: Check if two strings are anagrams Implement a function that determines whether two given strings a...

Coding & AlgorithmsArrays & StringsLinked Lists
13
0
110 people solved
Oct 6, 2025
Capital One logo
Capital One
Medium
Data Scientist

Fix dash dates and aggregate watch time

You receive a CSV of ad viewing logs where the date column repeats only on the first row of each block and subsequent rows use a single dash '-' to in...

Data Manipulation (SQL/Python)
7
0
85 people solved
Oct 13, 2025
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Evaluate Architecture and Capacity Trade-offs

This multi-part question evaluates system architecture trade-offs, capacity and storage planning, security-aware component design, and document dedupl...

Software Engineering Fundamentals
3
0
48 people solved
Nov 10, 2025
Google logo
Google
Hard
Data Scientist

Define and apply Gmail user segments

Question Gmail wants to create actionable user segments to drive both product improvements and marketing/lifecycle outcomes. Propose a segmentation sc...

Analytics & ExperimentationSegmentation & Cohort AnalysisExperiment Design (A/B Testing)
9
0
139 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Design log management with auto-deletion

Design log management with auto-deletion Design a Bounded Log Management System with O(1) Victim Selection Context You are designing an in-memory log ...

System DesignData Structure DesignHeaps & Priority Queues
10
0
132 people solved
Aug 4, 2025
Shopify logo
Shopify
Medium
Data Scientist

Diagnose Weekly Session Conversion Anomalies

You are a Data Scientist supporting an e-commerce platform. You receive a weekly time-series dashboard covering the past three years. The dashboard in...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
22
0
192 people solved
Apr 3, 2026
Google logo
Google
Medium
Data Scientist

Build and evaluate a full ML pipeline

You must predict both (1) probability that a user will spend >$0 in the next 7 days (classification) and (2) expected spend in the next 7 days (regres...

Machine LearningML System DesignFeature Engineering
17
0
173 people solved
Oct 13, 2025
Salesforce logo
Salesforce
Medium
Software EngineerSenior+ Locked

Design a Scalable Notification Service

Design a scalable multi-channel notification service with durable ingestion, explainable filtering, retry-safe delivery, quotas, and extensible provid...

System Design
6
0
55 people solved
Aug 12, 2026
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