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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
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
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
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
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
ZipHQ logo
ZipHQ
Medium
Software Engineer

Find root IDs and paths

You are given a collection of string blocks, each represented as a JSON object with fields {"id": string, "parentId": string | null}. A block is a roo...

Coding & AlgorithmsTrees
49
0
332 people solved
Aug 11, 2025
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
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
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
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Distributed Crossword Solver

This question evaluates proficiency in constraint-solving algorithms and distributed system architecture, including data representation, efficient sea...

System DesignSystem Design FundamentalsBacktracking & Recursion
30
0
436 people solved
Apr 7, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement multi-network card validator with Luhn

Design and implement a payment card validation module that supports multiple networks and error scenarios. Requirements: 1) Luhn checksum - Implement ...

Coding & Algorithms
13
0
102 people solved
Sep 6, 2025
Garmin logo
Garmin
Medium
Software EngineerIntern

Value on the Secondary Diagonal of a Center-Out Clockwise Spiral Matrix

An n x n matrix with an odd n is filled with the integers 1 to n * n in a clockwise spiral that starts in the center cell and winds outward to the edg...

Coding & AlgorithmsGrids & Matrices
1
0
19 people solved
Apr 14, 2026
DoorDash logo
DoorDash
Medium
Data ScientistSenior+

How would you mentor junior teammates?

Question You are interviewing for a senior-level data science role at DoorDash. The interviewer asks: > As a senior, how would you mentor others (espe...

Behavioral & LeadershipMentoring & Team GrowthLeadership & Influence
19
0
147 people solved
Feb 28, 2026
Stripe logo
Stripe
Medium
Software Engineer

Debug wrong DOM attributes in unknown framework

Frontend Debugging Plan: Incorrect DOM Attributes in an Unfamiliar Framework Context You join a team using an unfamiliar frontend framework. In the br...

Software Engineering FundamentalsDebuggingBrowser Internals
10
0
171 people solved
Sep 6, 2025
ByteDance logo
ByteDance
Easy
Software Engineer Locked

Prepare for an SRE Systems Fundamentals Round

Prepare for a Bytedance software engineering interview question about prepare for an sre systems fundamentals round. The prompt highlights practical r...

Software Engineering Fundamentals
1
0
29 people solved
Jun 13, 2026
Coinbase logo
Coinbase
Hard
Software Engineer

Design a Cryptocurrency Trading System with Third-Party Exchanges

Design a Cryptocurrency Trading System with Third-Party Exchanges Design a cryptocurrency trading platform that routes client orders to one or more th...

System DesignTrading SystemsDistributed Transactions & Idempotency
38
0
321 people solved
Aug 4, 2025
Airbnb logo
Airbnb
Hard
Data Scientist

Estimate Causal Impact Using Synthetic Control Methods

Estimate Causal Impact Using Synthetic Control Methods A product feature has already launched to 100% of traffic, and no explicit control or holdout g...

Analytics & ExperimentationCausal Inference
26
0
259 people solved
Jul 12, 2025
Runway logo
Runway
Hard
Machine Learning Engineer

Implement n-gram model and select n

Implement n-gram model and select n Task: Implement an n-gram Language Model with Training, Sampling, and Model Selection Guidance Objective Implement...

Machine LearningNatural Language ProcessingML Coding
33
0
431 people solved
Aug 8, 2025
Permitflow logo
Permitflow
Medium
Software Engineer Locked

Distinguish Permit Requirement Outcomes

This question evaluates software design and implementation skills, focusing on domain modeling of a tri-state permit status, condition matching via se...

Coding & Algorithms
5
0
56 people solved
Apr 8, 2026
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