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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
200
Companies
569
Updated
10.14.2026
200 Questions 569 Companies10.14.2026
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 50 results
Yelp logo
Yelp
Medium
Data Scientist

Compute and Rank by Jaccard Similarity

Implement two functions: (1) jaccard_similarity(s1, s2) that tokenizes by splitting on any non-alphanumeric character, lowercases, treats tokens as se...

Coding & Algorithms
5
0
68 people solved
Oct 13, 2025
Rippling logo
Rippling
Hard
Software Engineer

Design a scalable expense rules engine

Design a Rules Engine for Corporate Credit-Card Expense Review Context We offer a corporate credit card that employees use for business expenses. Mana...

System DesignLow-Level Design (OOP)API Design
323
2
2740 people solved
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Stripe logo
Stripe
Medium
Frontend Engineer Locked

Build and Optimize a React Interface Against an Undocumented API

Complete a time-boxed React engineering exercise against an undocumented API while using coding agents deliberately. Inspect the real response shape, ...

Software Engineering FundamentalsAI-Assisted DevelopmentReact & UI Frameworks
7
0
88 people solved
Jun 9, 2026
Airwallex logo
Airwallex
Medium
Software Engineer

How You Use AI Tools at Work and When You Would Delegate a Task to an Agent

During a technical screen for a software engineering role, the interviewer asks how you use AI tools in your everyday engineering work, then pushes fu...

Behavioral & LeadershipAI-Assisted Development
4
0
38 people solved
Sep 10, 2026
Scale AI logo
Scale AI
Easy
Software Engineer

Design an LLM API pipeline

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ML System DesignLLM ApplicationsPrompt Engineering
110
0
1339 people solved
Mar 17, 2026
Google logo
Google
Hard
Software EngineerSenior+

Plan a Safe Repository-Wide Identifier Migration

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Software Engineering Fundamentals
10
0
75 people solved
Apr 16, 2026
Amazon logo
Amazon
Medium
Software Engineer

Reflect on self, goals, learning, competitions

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Behavioral & Leadership
6
0
48 people solved
May 28, 2025
Zipline logo
Zipline
Medium
Software Engineer

Optimize Autonomy Mapping Components

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Software Engineering Fundamentals
2
0
47 people solved
Jan 25, 2026
Apple logo
Apple
Medium
Frontend Engineer Locked

Diagnose Cold-Load and Massive-Table Performance in a Web App

Diagnose two frontend performance cases: a cold page load and a browser asked to render ten million API records. The discussion emphasizes measurement...

Software Engineering Fundamentals
4
0
39 people solved
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Capital One logo
Capital One
Medium
Data ScientistSenior+

Explain Shell Script Line-by-Line for Data Science Workflows

Scenario Technical screening for a Principal Data Scientist: reviewing shell script and Python classes Question Explain, line by line, what the provid...

Coding & Algorithms
61
0
158 people solved
Aug 4, 2025
Disney logo
Disney
Medium
Software Engineer

Discuss Terraform, Infrastructure as Code, and AWS Experience

Discuss your experience with infrastructure as code, Terraform, and AWS. Explain a concrete infrastructure change you worked on, how it was reviewed a...

Software Engineering FundamentalsCI/CD & DeploymentCloud Platforms
2
0
29 people solved
Sep 8, 2026
Booking.com logo
Booking.com
Medium
Software Engineer

Design an AI-Assisted Development Workflow

Explain how you use AI tools in software work and how you would integrate an AI agent into a practical development workflow. Use a concrete example, a...

Software Engineering FundamentalsAI-Assisted DevelopmentAI Agents
1
1
20 people solved
Aug 25, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Design a harmful content detection system

Design a Harmful Content Detection System (Multilingual, Multimodal) Problem Statement You are designing a trust-and-safety system for a large, mobile...

ML System DesignAI Safety & AlignmentModel Evaluation
20
0
229 people solved
Sep 6, 2025
Mercor logo
Mercor
Medium
Software Engineer

Debug a Payment Service's Charge Flow Against Retries, Crashes and Timeouts

You are asked to debug the charge flow of a payment service. The service charges a user for an order through an external payment provider and records ...

Software Engineering FundamentalsDistributed Transactions & IdempotencyPayments & Ledgers
0
0
5 people solved
Oct 4, 2026
League logo
League
Medium
Software Engineer

Design scalable insurance claims processing system

Design an end-to-end insurance claims processing system for a health-focused insurer. The system handles a claim's full lifecycle — from submission, t...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
34
0
229 people solved
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DoorDash logo
DoorDash
Medium
Software Engineer

Explain AI Tool Use, Model Selection, and Engineering Validation

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Behavioral & LeadershipAI-Assisted DevelopmentLLM Applications
4
0
35 people solved
Sep 5, 2026
Databricks logo
Databricks
Medium
Machine Learning Engineer

Detect Harmful Content in LLM Prompts and Responses

Design a machine learning system that detects harmful content submitted to, or produced by, a large language model (LLM) product. The report records o...

ML System DesignAI Safety & AlignmentAnnotation & Label Quality
1
0
18 people solved
Sep 11, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Design a Menu Item Review and Rating System for a Food-Delivery Platform

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System DesignSystem Design FundamentalsAPI Design
6
0
76 people solved
Sep 10, 2026
Meta logo
Meta
Medium
Data Scientist

Learn complex topic fast under deadline

Behavioral Prompt: Rapid Ramp-Up on a New Analytical Framework You had to learn a new analytical framework in under a week to deliver a high-stakes re...

Behavioral & Leadership
3
0
35 people solved
Oct 13, 2025
Google logo
Google
Hard
Data Scientist Locked

Evaluate AI Workflow Product Metrics

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Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
61
0
576 people solved
May 18, 2026
Booking.com logo
Booking.com
Medium
Software Engineer

Solve three OA coding questions

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Coding & AlgorithmsArrays & Strings
23
0
246 people solved
Nov 2, 2025
PayPal logo
PayPal
Hard
Machine Learning Engineer

Design a traditional fraud detection system

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ML System DesignFeature EngineeringML Data Pipelines & Feature Stores
19
0
272 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Hard
Software EngineerSenior+

Implement concurrent structures and debug queue code

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Coding & AlgorithmsData Structure DesignConcurrency
18
0
152 people solved
Apr 7, 2026
Meta logo
Meta
Medium
Product AnalystSenior+

Describe an Analysis Where You Used AI Responsibly

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2
0
48 people solved
Apr 20, 2026
Ramp logo
Ramp
Hard
Software Engineer AI

Reconcile Records Across Sources

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Software Engineering FundamentalsData Cleaning & WranglingAI-Assisted Development
88
0
1098 people solved
Jan 17, 2026
Cohere logo
Cohere
Medium
Data Engineer Locked

Design a Conversation Log Ingestion Pipeline

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System DesignETL & Data PipelinesBatch & Stream Processing
17
0
170 people solved
May 30, 2026
Amazon logo
Amazon
Easy
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25
1
479 people solved
Aug 19, 2026
Apple logo
Apple
Hard
Software Engineer

Design and scale a Yelp-like platform

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10
0
130 people solved
Sep 6, 2025
Meta logo
Meta
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Debug and optimize React performance issues

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System Design
6
0
70 people solved
Aug 4, 2025
NVIDIA logo
NVIDIA
Hard
Software Engineer

Plan technical marketing for new AI feature

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Behavioral & Leadership
5
0
73 people solved
Jul 31, 2025
Meta logo
Meta
Hard
Software EngineerSenior+

Design a content processing service

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System Design
5
0
60 people solved
Sep 6, 2025
Glean logo
Glean
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Machine Learning Engineer

Design Employee-to-Employee Distance

Design an employee-to-employee distance system for a large company. The system takes two employees as input and returns a meaningful "distance" (or, e...

ML System DesignPrivacy & ComplianceRecommendation Systems
14
0
223 people solved
Apr 23, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Refactor a chat message processing function

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23
0
219 people solved
Jan 2, 2026
Blink logo
Blink
Hard
Software Engineer Locked

Design a Medicine Development Platform

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2
0
23 people solved
Jun 28, 2026
ZipHQ logo
ZipHQ
Hard
Software Engineer

Debug and extend an expense reimbursement reporting codebase with an AI coding assistant

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Software Engineering FundamentalsAI-Assisted DevelopmentDebugging
3
0
40 people solved
Sep 9, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Evaluate Noisy Data for LLM Post-Training

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31
0
317 people solved
May 31, 2026
Mercor logo
Mercor
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Software Engineer

Review a Hand-Rolled Python CSV Serializer for Correctness and Performance Bugs

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1
0
30 people solved
May 31, 2026
Amazon logo
Amazon
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Software Engineer Locked

Architect an AI Chatbot for Enterprise Users

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System DesignLLM ApplicationsAI Safety & Alignment
17
0
165 people solved
Jul 1, 2026
Google logo
Google
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Software Engineer

Choose best/worst actions in workplace ethics scenarios

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Behavioral & LeadershipEthics & Responsibility
21
0
182 people solved
Jan 22, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Use Generative AI to Improve Work Efficiently

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2
0
23 people solved
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Okta logo
Okta
Medium
Backend EngineerSenior+

Repair an Express Authentication Endpoint Without Blocking the Event Loop

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3
0
39 people solved
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AMD logo
AMD
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Software Engineer

Evaluate Agents That Generate or Optimize Kernels and Compiler Code

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2
0
15 people solved
Sep 14, 2026
Equinix logo
Equinix
Medium
Software Engineer Locked

Review AI Platform And Software Fundamentals

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4
0
40 people solved
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Sprinter Health logo
Sprinter Health
Medium
Software Engineer

Design a scalable game app store

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System DesignSystem Design FundamentalsFile & Media Storage
37
1
261 people solved
Dec 8, 2025
Ramp logo
Ramp
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7
0
88 people solved
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Rippling logo
Rippling
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Software Engineer AI Locked

Design Scalable Expense Violation Processing

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84
0
1002 people solved
Feb 27, 2026
OpenAI logo
OpenAI
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Software Engineer Locked

Manage Team Growth, Performance, and Composition

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Behavioral & Leadership
3
0
44 people solved
Aug 1, 2026
Coinbase logo
Coinbase
Hard
Software Engineer AI

Debug and Extend Cursor Queries

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Software Engineering FundamentalsDebuggingAI-Assisted Development
27
0
502 people solved
Apr 2, 2026
Google logo
Google
Hard
Product Manager

Legacy Payroll System Migration Plan

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Product / Decision MakingRoadmapping & PlanningData Quality & Validation
21
0
136 people solved
Jul 4, 2025
Chime logo
Chime
Hard
Software Engineer

Design mobile check deposit system

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System DesignPayments & LedgersDistributed Transactions & Idempotency
121
0
1074 people solved
Jul 27, 2025
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