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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 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
Palantir logo
Palantir
Hard
Software Engineer

Design a scalable interview question bank

Design a scalable interview question bank System Design: Scalable Interview Question Bank Platform Context Design a multi-tenant SaaS platform for org...

System DesignSystem Design FundamentalsSearch & Feed Systems
100
0
783 people solved
Jul 26, 2025
ByteDance logo
ByteDance
Medium
Senior SDE, Quality Platform & AI Test AutomationSenior+ Locked

Design an Agent-Orchestrated QA Pipeline from Requirements to Test Report

Design an agent-orchestrated QA pipeline that turns requirements into traceable test cases, data, scripts, execution evidence, and reports through typ...

ML System Design
1
0
16 people solved
Aug 10, 2026
Amazon logo
Amazon
Medium
Software Engineer

Design a Ride-Hailing Matching System

Design a ride-hailing matching system similar to a taxi or rideshare application (e.g. Uber, Lyft, DiDi). The interview focuses on the driver-location...

System DesignSystem Design FundamentalsGeo & Delivery Systems
20
0
159 people solved
Apr 9, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Debug a Random Dasher Registry

Debug a Random Dasher Registry A registry supports adding dashers and randomly selecting and removing one. It uses a dense array of dasher IDs plus a ...

Software Engineering Fundamentals
5
0
74 people solved
Apr 3, 2026
Valon logo
Valon
Hard
Software Engineer

Implement an in-memory SQL-like table

Implement a simplified in-memory SQL-like database for a single table. You should support the following operations on a table with a fixed schema (a l...

Coding & AlgorithmsData Structure Design
19
0
333 people solved
Feb 17, 2026
Tml logo
Tml
Medium
Software Engineer

Implement a Resizable Deque

Implement a double-ended queue (deque) data structure backed by a circular array. Your deque should support insertion and removal from both ends and s...

Coding & Algorithms
5
0
73 people solved
Apr 22, 2026
Nooks logo
Nooks
Medium
Software Engineer

Implement a BFS web crawler

A web crawler starts from a URL and explores reachable pages level by level. You are given: - start_url: string - An interface fetch_links(url: string...

Coding & AlgorithmsGraphs
18
0
175 people solved
Feb 28, 2026
Nuro logo
Nuro
Hard
Software Engineer Locked

Cluster 3D Points by a Distance Threshold

Implement cluster_points_3d(points, D). Work through the function contract, boundary cases, correctness argument, and time and space complexity expect...

Coding & Algorithms
4
0
59 people solved
May 9, 2026
Netapp logo
Netapp
Medium
Software Engineer Locked

Explain How Microservices Run and Fail on Kubernetes

Explain how microservices run and fail on Kubernetes by tracing one cross-service request through scheduling, discovery, configuration, health, scalin...

Software Engineering Fundamentals
2
0
28 people solved
Aug 9, 2026
Airbnb logo
Airbnb
Medium
Data Scientist Locked

Describe How You Use SQL in Data Science Work

Prepare to explain how you use SQL in day-to-day data science work, from defining analysis populations and joining data to building experiment or coho...

Data Manipulation (SQL/Python)SQLData Quality & Validation
6
0
74 people solved
Jul 8, 2026
Voleon logo
Voleon
Medium
Quantitative Researcher

Explain a Sorting Algorithm Such as Merge Sort: Mechanics, Correctness, Complexity

This is the first of three questions in a 60-minute technical screen for a quantitative role: explain a sorting algorithm of your choice. Merge sort i...

Software Engineering FundamentalsSorting
4
0
32 people solved
Oct 31, 2025
Optiver logo
Optiver
Medium
Software Engineer

Design a Balloon Festival Simulator

Implement a class BalloonFestival with the following API and rules. Goal Track hot air balloons (yours and competitors), evolving wind fields, and bal...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
47
0
540 people solved
Jul 27, 2025
Apple logo
Apple
Medium
Software Engineer

Solve 15 common interview problems

Below are fifteen independent coding problems commonly discussed in software engineering interviews. For each one, write an efficient algorithm and be...

Coding & AlgorithmsArrays & StringsGraphs
18
0
178 people solved
Jan 27, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Design a Task Scheduler and Executor

Design a Task Scheduler and Executor Design a service that accepts tasks for future or recurring execution and dispatches them to workers. Constraints...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
16
1
132 people solved
Apr 21, 2026
Amazon logo
Amazon
Hard
Software Engineer AI

Diagnose Return Eligibility Scoring Bugs

You are working on an e-commerce return-eligibility service. For each return request, the service computes a risk score using signals such as: - how m...

Software Engineering FundamentalsDebugging
9
0
153 people solved
Jan 12, 2026
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Discuss a Proud Project, Conflict, Challenge, and Team Advice

Develop concrete behavioral stories about a proud project, a substantive conflict, a major challenge, advice for the current team, and motivation for ...

Behavioral & Leadership
6
0
61 people solved
Jun 9, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Build a File-Driven Data Visualization and Replay UI

Build a small web app that loads a data file and visualizes its contents. Include controls to replay the visible data over time. Constraints & Assumpt...

Software Engineering FundamentalsReact & UI FrameworksParsing & Interpreters
1
0
18 people solved
Jun 17, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a simple greeting-card web app

This question evaluates a candidate's ability to design a minimal web application architecture for an MVP greeting-card service, covering frontend/bac...

System Design
8
0
107 people solved
Feb 11, 2026
Optiver logo
Optiver
Medium
Software Engineer

Decide and implement DP/heap and approximation

You have 90 minutes to complete three related coding tasks: a) Dynamic programming: Given an integer array nums (n ≤ 2e 5) and a threshold T, design a...

Coding & AlgorithmsDynamic ProgrammingHeaps & Priority Queues
40
0
296 people solved
Aug 13, 2025
Oracle logo
Oracle
Medium
Software Engineer

Solve the Hardest Project Challenge

Solve the Hardest Project Challenge Describe the hardest project you have handled, what made it difficult, how you decomposed the uncertainty, and how...

Behavioral & Leadership
1
0
16 people solved
Aug 18, 2026
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