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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Atlassian logo
Atlassian
Medium
Machine Learning Engineer Locked

Assign bookings to minimum tennis courts

This question evaluates interval scheduling and resource-allocation competencies, testing algorithmic and data-structure knowledge for handling time-i...

Coding & Algorithms
5
0
53 people solved
Oct 15, 2025
Luma AI logo
Luma AI
Hard
Software Engineer Locked

Manage Prompt and Model Behavior in Production

Design production controls for prompts, models, retrieval policy, tools, and decoding settings in an AI application. Use immutable configuration versi...

ML System Design
0
0
16 people solved
May 25, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design an extensible ticketing system

System Design: Extensible EventTicketSystem Context Design a ticketing platform that sells tickets for concerts, movies, and sports. The system must s...

System Design
11
0
82 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Compute grid shortest path with obstacles

You are given an m x n grid of integers where cells with value -1 represent obstacles and all other cells are traversable. Starting at (0, 0) and targ...

Coding & Algorithms
9
0
68 people solved
Sep 6, 2025
Asana logo
Asana
Medium
Software Engineer

Design a Collaborative Todo List

Design a collaborative todo-list service — think shared lists where teammates add, edit, assign, reorder, and complete items, and see each other's cha...

System DesignReal-Time SystemsConsistency & Availability
72
0
506 people solved
Apr 2, 2026
LinkedIn logo
LinkedIn
Easy
Data Scientist

Find top countries by population per continent

Table world_population - continent VARCHAR - country VARCHAR - population BIGINT Assume each row is a country’s latest population and (continent, coun...

Data Manipulation (SQL/Python)SQL
7
1
103 people solved
Feb 1, 2026
Instacart logo
Instacart
Medium
Software Engineer

Pivot order-status counts

Pivot order-status counts Given an orders table (order_id, shopper_id, order_date, status, …), pivot the data so that each row is one shopper and each...

Coding & AlgorithmsArrays & Strings
11
0
140 people solved
Aug 4, 2025
Databricks logo
Databricks
Medium
Software Engineer

Implement a sliding-window hit counter

Implement a hit counter that supports recordHit(timestamp) and getHits(pastSeconds). Use a fixed-size array to maintain a sliding time window (e.g., l...

Coding & AlgorithmsData Structure DesignArrays & Strings
28
0
187 people solved
Sep 6, 2025
Nextdoor logo
Nextdoor
Hard
Software Engineer

Describe CAP, distributed systems, multithreading experience

CAP Theorem, Distributed Systems Design Decisions, and Multithreading Context Provide a structured answer that both explains the concepts and shows ho...

System DesignConsistency & AvailabilityConcurrency
14
0
132 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement distinct islands and sliding maxima

Implement distinct islands and sliding maxima 1) Given a binary grid where 1 represents land and 0 represents water, count how many distinct island sh...

Coding & Algorithms
4
0
68 people solved
Aug 8, 2025
Google logo
Google
Medium
Product Manager

Learning from Wrong Data

Behavioral Prompt: Decision-Making With Bad or Misleading Data Tell me about a time you made a significant decision based on incorrect or misleading d...

Behavioral & LeadershipFailure & LearningAmbiguity & Decision Making
21
0
107 people solved
Jul 4, 2025
Meta logo
Meta
Medium
Data Engineer

Return top-3 content per category

Given a collection of items with fields (content_id, category, rating), implement top_k_by_category(items, k= 3) that returns, for each category, the ...

Data Manipulation (SQL/Python)
2
0
26 people solved
Aug 1, 2025
Shopify logo
Shopify
Hard
Machine Learning Engineer

Design a baseline loan recommendation system

System Design: Baseline Loan Recommendation System Context Design a baseline system that recommends loan offers to users on a digital platform. The sy...

ML System DesignFairness & BiasRecommendation Systems
18
0
247 people solved
Sep 6, 2025
Shopify logo
Shopify
Medium
Machine Learning Engineer

Implement an interactive CLI class with tests

Design and implement a command-line interactive application as a single class using OOP principles. The program should support commands: add <key> <va...

Coding & AlgorithmsLow-Level Design (OOP)Testing & Quality
16
0
269 people solved
Aug 13, 2025
Lyft logo
Lyft
Medium
Machine Learning EngineerIntern

Explain Python and Systems Fundamentals

Answer the following software engineering fundamentals questions: 1. A production system has become very slow. How would you detect the bottleneck, me...

Software Engineering FundamentalsDebuggingConcurrency
16
0
122 people solved
Mar 12, 2026
Axon logo
Axon
Medium
Software Engineer

Design analytical tracking database

Design analytical tracking database Design an Analytical Database for User Actions Context You are building an analytics data store to track user beha...

System DesignWarehouse & Lakehouse ArchitectureDimensional Modeling
30
0
243 people solved
Aug 4, 2025
Coinbase logo
Coinbase
Hard
Software Engineer

Maximize block fee with transaction selection

You are given N transactions. Each transaction has: - id (unique identifier) - size (positive integer) - fee (positive integer) You are building a blo...

Coding & AlgorithmsGreedy
35
0
380 people solved
Feb 13, 2026
Two Sigma logo
Two Sigma
Easy
Data Scientist

Fill Missing Time-Series Values with Linear Interpolation (Duplicate Timestamps Allowed)

Fill Missing Time-Series Values with Linear Interpolation (Duplicate Timestamps Allowed) You are given readings from a single sensor as a list of reco...

Coding & Algorithms
3
0
40 people solved
May 13, 2025
Citadel logo
Citadel
Medium
Software Engineer

Optimize password transform and discount scheduling

Optimize password transform and discount scheduling Part 1 — Transform to palindromic k-periodic string: Input: a lowercase string currentPassword and...

Coding & AlgorithmsArrays & StringsIntervals & Scheduling
19
0
171 people solved
Aug 1, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Identify Key Metrics to Address Delivery Delays

Identify Key Metrics to Address Delivery Delays Scenario DoorDash, a food-delivery marketplace, is seeing growing customer complaints about orders arr...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
12
0
166 people solved
Aug 4, 2025
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