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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
476
Companies
980
Updated
11.10.2026
476 Questions 980 Companies11.10.2026
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
Stripe logo
Stripe
Medium
Software EngineerIntern

Simulate sticky load balancer with shutdown

Problem Implement a simulator for a load balancer that routes long-lived WebSocket connections across m backend servers. You receive a sequence of tex...

Coding & AlgorithmsSimulation & State Machines
178
2
1755 people solved
Feb 12, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Tic-Tac-Toe with Automatic Turns and Board Snapshots

Implement two-player Tic-Tac-Toe with automatic turn changes, board snapshots, rejected moves, winning lines, and full-board draws.

Coding & AlgorithmsSimulation & State Machines
17
0
136 people solved
Sep 6, 2026
Upstart logo
Upstart
Medium
Software Engineer Locked

Compute Buffet Revenue with Waiting Guests and Repeat Visits

Simulate buffet seating, FIFO waiting, early departures, and repeat visits while charging each guest at most once per day.

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
12
0
134 people solved
Sep 12, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Medium
Software Engineer Locked

Rotate a Square Matrix Clockwise While Both Diagonals Stay Fixed

Rotate every element of a square matrix that lies off both diagonals by 90 degrees clockwise a given number of times, leaving the main-diagonal and an...

Coding & AlgorithmsGrids & Matrices
11
0
215 people solved
Sep 17, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Infection Spread with Immunity and Recovery

Simulate simultaneous infection spread and timed recovery on a grid containing susceptible, infected, immune, recovered, and empty cells, then return ...

Coding & AlgorithmsSimulation & State Machines
57
3
811 people solved
Aug 15, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Build Two Interacting Services That Carry Out a Realistic Refund Flow

Implement a refund flow as two services that interact with each other to complete a refund. This is an AI-assisted coding round: an AI coding assistan...

Software Engineering FundamentalsPayments & LedgersDistributed Transactions & Idempotency
13
0
143 people solved
Sep 10, 2026
Perplexity logo
Perplexity
Medium
Software Engineer Locked

Design a Long-Running Query Service

Design a long-running query service with durable jobs, asynchronous status and results, resource limits, and clear retry, cancellation, and failure be...

System DesignJob Scheduling & WorkflowsAPI Design
30
0
230 people solved
Sep 1, 2026
Optiver logo
Optiver
Hard
Software EngineerIntern

Implement a Multicore Overheat Prevention Controller

Problem Simulate a firmware controller that prevents a multicore processor from overheating. Each core has a configured workload, all cores share pass...

Coding & AlgorithmsSimulation & State Machines
103
0
1495 people solved
Apr 21, 2026
Glean logo
Glean
Medium
Software Engineer

Object-Oriented Design of a Two-Player Chess Game: Board, Pieces, Moves, Game End

In an object-oriented design phone screen, the question was: design chess. Design the classes for a two-player chess game that can be played to comple...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
1
0
35 people solved
Sep 30, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Register Data Centers and Route to the Nearest Healthy Region

Process a deterministic command language for registering data centers, changing health, measuring Haversine distance, and routing to healthy regions, ...

Coding & AlgorithmsSimulation & State Machines
105
2
943 people solved
Aug 13, 2026
Two Sigma logo
Two Sigma
Medium
Software Engineer Locked

Match Limit Orders with Price-Time Priority

Implement a limit-order matcher that honors crossing rules, price-time priority, partial fills, and resting-order prices. Produce trades and final boo...

Coding & AlgorithmsTrading SystemsData Structure Design
60
0
409 people solved
Jul 31, 2026
Robinhood logo
Robinhood
Easy
Software Engineer Locked

Design an iOS Timer App with Consistent State and Asynchronous UI Updates

Design an iOS timer around explicit state transitions, clock-based elapsed time, main-thread UI updates, callback ownership, and lifecycle behavior.

Software Engineering FundamentalsiOSMobile Architecture & Performance
8
0
138 people solved
Sep 15, 2026
Roblox logo
Roblox
Medium
Software Engineer

Match-3 Grid: Find Horizontal and Vertical Runs, Then Clear and Drop Cells

You are given an m × n grid of positive integers representing a Match-3 game board. A match is a run of 3 or more equal values side by side in one row...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
12
1
86 people solved
Aug 5, 2026
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Build Task Management Through Records, Search, Assignment, and Completion

Design staged task management with map-based records, search and sorting, user assignments, completion semantics, deadline checks, and consistent inde...

Software Engineering FundamentalsLow-Level Design (OOP)Data Structure Design
9
0
180 people solved
Aug 27, 2026
Citadel logo
CitadelJane StreetGoogle
Medium
Software Engineer

Match Buy and Sell Batches and Count the Backlog

Problem Process orders in input order, with rows [price,amount,type] and type 0 for buys or 1 for sells. A buy matches the cheapest pending sell price...

Coding & AlgorithmsHeaps & Priority QueuesSimulation & State Machines
4
1
37 people solved
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+

Simulate Roller Coaster Boarding: Runs, Total Time and Seat Utilization

Write a program that plans how a queue of waiting groups rides a roller coaster and reports how the session went. The original prompt was long and was...

Software Engineering FundamentalsSimulation & State Machines
10
0
83 people solved
Aug 15, 2026
Cisco logo
Cisco
Easy
Software Engineer

Implement a Python To-Do Task Manager Class with CRUD and Status Rules

Write a Python class that manages a to-do list of tasks. It must support the four CRUD operations: create a task, read one task or a list of tasks, up...

Software Engineering FundamentalsLow-Level Design (OOP)
1
0
28 people solved
Sep 19, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Flatten Fractional-Share Inventory and Record Trade Logs

Process fractional-share buys and sells with exact hundredth units, whole-share market flattening, dollar-order conversion, and ordered inventory-pers...

Coding & AlgorithmsSimulation & State MachinesMath & Number Theory
25
0
183 people solved
Sep 3, 2026
Brex logo
Brex
Medium
Software Engineer

Splendor-Style Card Purchases with Gem Costs, Color Discounts and Concurrent Buys

Build a small simulation of buying cards in a game modeled on the board game Splendor. Players hold gems in five colors: Blue (B), White (W), Green (G...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
13
0
178 people solved
Aug 21, 2026
ZipHQ logo
ZipHQ
Hard
Software Engineer Locked

Find the Guaranteed Capture Time in a Turn-Based Graph Game

Solve guaranteed capture time in a finite turn-based graph pursuit game, including Jerry-first moves, staying, optimal adversarial play, and infinite ...

Coding & AlgorithmsGraphsDynamic Programming
19
0
177 people solved
Sep 17, 2026
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