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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
Meta logo
Meta
Medium
Site Reliability EngineerSenior+

Troubleshoot a production server outage

You are the on-call engineer responsible for a production server for the next several days. Discuss how you would approach the following: - How would ...

Software Engineering FundamentalsReliability & SRE
39
0
332 people solved
Apr 12, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Design a GPU inference API

Question Design a scalable, GPU-backed inference API for serving multiple deep learning models (including large autoregressive models such as LLMs) to...

ML System DesignLLM Inference & ServingGPU Infrastructure
158
0
1170 people solved
Aug 1, 2025
Revolut logo
Revolut
Medium
Software EngineerNew Grad

Explain DB concurrency, debugging slowness, DDD and CQRS

Backend fundamentals: concurrency, performance investigation, and architecture terms Answer the following backend questions: 1. How do databases handl...

Software Engineering FundamentalsTransactions & IsolationDebugging
32
1
344 people solved
Feb 11, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Debug a Broken Transformer

This question evaluates proficiency in debugging and reconfiguring Transformer-based deep learning models, covering competencies in model internals (a...

Machine LearningTransformers & AttentionML Coding
121
0
954 people solved
Mar 3, 2026
Oracle logo
Oracle
Medium
Backend EngineerSenior+ Locked

Design a High-Volume Healthcare Data Ingestion Pipeline

Design a high-volume healthcare ingestion pipeline for sensitive, duplicated, malformed, and versioned partner data, covering validation, replay, faul...

System Design
1
0
15 people solved
Aug 10, 2026
Serval logo
Serval
Medium
Software Engineer Locked

Model Flights, Passengers, Bookings, and Seat Holds

Design a relational flight-booking model for passengers, scheduled departures, seat reservations, and temporary holds. Explain efficient lookup in bot...

System Design
4
0
68 people solved
Jul 12, 2026
Brex logo
Brex
Hard
Software Engineer

Design Points-from-Transactions Service

Design a Scalable Loyalty Points Service (USD → Points at 1 USD = 1.5 Points) You are designing a service that awards loyalty points for purchase tran...

System DesignPayments & LedgersDistributed Transactions & Idempotency
96
0
695 people solved
Aug 14, 2025
Waymo logo
Waymo
Hard
Software Engineer

Find a Repeating Vehicle Program Under Fuel and Memory Limits

Find a short program for a vehicle on a grid. The vehicle starts at a specified interior cell with 100 fuel units. It can move up, down, left, or righ...

Coding & AlgorithmsSimulation & State MachinesBacktracking & Recursion
3
0
29 people solved
Jun 27, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Design a Secure PDF Data Room

This question evaluates a candidate's mastery of system design and secure authorization models for multi-tenant file-sharing platforms, focusing on or...

System DesignAuthentication & AuthorizationSystem Design Fundamentals
64
0
613 people solved
Apr 20, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Merge Overlapping Intervals

This question tests practical array manipulation and sorting skills by requiring candidates to consolidate overlapping numeric intervals into a minima...

Coding & Algorithms
5
0
38 people solved
Jun 5, 2026
Robinhood logo
Robinhood
Hard
Data Engineer

Aggregate user logs into 30-minute sessions

You are given a CSV file with columns: user_id | log_datetime | topic Example input rows (already in time order for the same user): - 001 | 2025-03-01...

Coding & Algorithms
10
0
110 people solved
Feb 28, 2026
Vanta logo
Vanta
Medium
Software EngineerSenior+ Locked

Explain Team Impact and Executive Collaboration

Explain how you improved team effectiveness beyond assigned work and collaborated with a senior leader on a consequential decision. Show influence wit...

Behavioral & Leadership
10
0
74 people solved
Jul 13, 2026
Uber logo
Uber
Medium
Machine Learning EngineerSenior+

Find a Black-Box Convex Function Minimum

You are given access to a black-box function F(x): each call returns the function value at a real number x. You are also given a search interval [a, b...

Coding & Algorithms
4
0
77 people solved
Apr 19, 2026
Harvey logo
Harvey
Medium
Software Engineer

Implement a Hierarchical File System

Implement an in-memory hierarchical file system. Create a class FileSystem with the following methods: - FileSystem() initializes an empty file system...

Coding & Algorithms
4
1
89 people solved
Apr 12, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Minimum Drone Delivery Time on a Ring of Hubs

This question tests a candidate's grasp of circular graph traversal and greedy distance minimization on ring-structured topologies. It evaluates algor...

Coding & Algorithms
5
0
46 people solved
Jun 15, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a persistent key-value store

Design and implement an in-memory key-value store with a 'medium' layer that serializes the store to bytes for persistence. Provide four functions: se...

Coding & AlgorithmsData Structure Design
51
0
632 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

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
2
0
21 people solved
Sep 9, 2026
Coreweave logo
Coreweave
Medium
Software Engineer

Design a Notification System for Bursty Writes of 1M per Second

Design a notification system. The interviewer pasted a long list of requirements that is not available here, so confirm the requirements below or stat...

System DesignReal-Time SystemsMessaging & Event-Driven
0
0
2 people solved
Sep 29, 2026
Coinbase logo
Coinbase
Hard
Software Engineer AI

Implement Game Physics and Block Mining

You are given two independent coding tasks from the same interview category. Solve both. Task A: Flappy-Bird-Style Jump Boundary Function Implement a ...

Coding & AlgorithmsGreedySimulation & State Machines
41
0
310 people solved
Apr 2, 2026
Shopify logo
Shopify
Medium
Software Engineer AI

Implement an In-Memory File System

Implement an In-Memory File System The source reports an in-memory file-system exercise but not its exact error serialization or current-directory rem...

Coding & Algorithms
8
0
106 people solved
Apr 28, 2026
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