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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
Stripe logo
Stripe
Easy
Data Scientist

Match payments to invoices by memo or amount

Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...

Coding & AlgorithmsData Cleaning & WranglingArrays & Strings
26
0
188 people solved
Oct 25, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Assign Meetings to the Minimum Number of Rooms

Assign meetings to the minimum number of rooms while returning a deterministic room ID for every original interval. Use priority queues to release all...

Coding & Algorithms
5
0
30 people solved
Aug 16, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+ Locked

Design a Food Rating System

This question evaluates skills in system design, data modeling, consistency and transactional guarantees, idempotency, scaling, and designing read-hea...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
68
0
868 people solved
Jun 5, 2026
Amazon logo
Amazon
Hard
Software EngineerSenior+

Evaluate IP Access Rules

You are given a list of IPv4 access-control rules. Each rule consists of: - an action: allow or deny - a CIDR block such as 192.168.0.0/16 You are als...

Coding & AlgorithmsBit Manipulation
18
0
245 people solved
Feb 17, 2026
Jane Street logo
Jane Street
Medium
Quantitative ResearcherIntern

Five Pumpkins Weighed in Every Pair: Find the Total Weight

You have 5 pumpkins. You weigh them two at a time, in every possible pairing, and the scale readings for the ten pairs are: $$21,\ 22,\ 23,\ 24,\ 25,\...

Software Engineering Fundamentals
10
1
108 people solved
Aug 28, 2025
Meta logo
Meta
Medium
Software Engineer

Design a distributed job scheduler

Question Design a distributed job scheduler that can run background jobs at specific times or on recurring schedules (similar to cron but scalable and...

System DesignJob Scheduling & WorkflowsDistributed Coordination
18
0
123 people solved
Dec 8, 2025
Tesla logo
Tesla
Hard
Machine Learning Engineer

Model other agents in simulation

Scenario You are building a driving simulation environment for training/evaluating an autonomous agent (planning or RL). Besides the ego vehicle, the ...

ML System Design
21
0
335 people solved
Feb 12, 2026
Asana logo
Asana
Medium
Software Engineer

Implement an ASCII Art Printer

Implement an ASCII art printer. A font defines each supported character as a glyph with the same height. A glyph is a list of equal-length text rows. ...

Coding & Algorithms
13
0
115 people solved
Apr 2, 2026
Okx logo
Okx
Medium
Software EngineerSenior+ Locked

Group Strings By Anagram Signature

Practice grouping strings by anagram signature in a coding interview, including sorting-based and frequency-vector approaches. The problem is useful f...

Coding & Algorithms
1
0
20 people solved
Jul 8, 2026
Roblox logo
Roblox
Hard
Software Engineer

Design real-time game matchmaking service

Design a Real-Time Game Matchmaking Service Context You are designing the matchmaking subsystem for an online multiplayer game that supports multiple ...

System DesignSystem Design Fundamentals
45
0
341 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Design an API for pay computation with retries

You’ve implemented logic that computes a dasher’s pay from order event logs (events include timestamps and state transitions). Design an HTTP API to e...

Software Engineering FundamentalsAPI DesignDistributed Transactions & Idempotency
15
1
263 people solved
Jan 14, 2026
Google logo
Google
Medium
Software EngineerIntern Locked

Maximize 1D deliveries within distance and minimize total distance

This question evaluates combinatorial optimization and constrained matching skills, focusing on reasoning about distance-based pairings, lexicographic...

Coding & AlgorithmsDynamic ProgrammingSorting
13
0
140 people solved
Dec 27, 2025
Atlassian logo
Atlassian
Medium
Machine Learning Engineer

Compute moving average over last N stream

You are given an integer N and an unbounded stream of integers arriving one by one. After each new integer arrives, output the average of the last N i...

Coding & Algorithms
4
0
75 people solved
Nov 21, 2025
Stripe logo
Stripe
Medium
Software Engineer Locked

Find linked user records by weighted similarity

This question evaluates skills in similarity-based record linkage, weighted field scoring, and graph connectivity analysis within the Coding & Algorit...

Coding & Algorithms
13
0
105 people solved
Jan 6, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Design and Release a Consistent Dark-Store Inventory System

Design a consistent dark-store inventory system with relational transactions, reservations, retries, reconciliation, CI/CD, and safe Kubernetes rollou...

System DesignTransactions & IsolationCI/CD & Deployment
3
0
25 people solved
Aug 28, 2026
Gsa logo
Gsa
Hard
Data Scientist Locked

Predict Stock Returns from Sentiment and Market Data

You have observations containing timestamp, stock identifier or index membership, sentiment score, relevance score, and stock prices. Cover data and l...

Machine Learning
2
0
25 people solved
Jun 26, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Simulate stack traces from logs

Given a list of log entries describing function calls, each formatted as "<id> <event> <timestamp>" where event ∈ {START, END} and timestamps are inte...

Coding & AlgorithmsStacks & Queues
66
0
606 people solved
Sep 6, 2025
Arista logo
Arista
Easy
Software Engineer

Explain Out-of-Bounds Bugs and Infinite Loops

You are given a C or C++ code snippet that behaves incorrectly. The root cause is an out-of-bounds memory access, such as reading or writing past the ...

Software Engineering FundamentalsDebuggingMemory Management
18
0
131 people solved
Mar 25, 2026
Otter.Ai logo
Otter.Ai
Easy
Software Engineer Locked

Extend a Key-Value Store with Commits and Explicit Rollover Semantics

Design key-value operations and versioned commits while clarifying rollover behavior, snapshot isolation, deletion history, and storage tradeoffs.

System DesignKey-Value StoresData Structure Design
2
0
16 people solved
Aug 29, 2026
Chicago Trading Company logo
Chicago Trading Company
Medium
Software Engineer Locked

Trace Virtual Address Translation Through TLBs, Page Tables, and Caches

Trace a memory load through virtual-address decomposition, a TLB hit, and a multi-level page-table walk after a miss. Distinguish translation caching ...

Software Engineering Fundamentals
3
0
39 people solved
Jul 1, 2026
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