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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
Amazon logo
Amazon
Hard
Software EngineerSenior+ Locked

Use a Fitted Line to Predict a Future Data Point

Use a fitted line's slope and intercept to predict a future value, then assess whether that extrapolation is meaningful. The question covers units, de...

Machine LearningRegression & Statistical ModelingModel Evaluation
11
0
113 people solved
Jul 21, 2026
Clickup logo
Clickup
Medium
Software Engineer

Design an AI-Powered Search System, Focusing on the Search Index

Design an AI-powered search system: users search in natural language and should find relevant content even when their words differ from the wording of...

System DesignSearch & Feed SystemsEmbeddings & Vector Search
0
0
6 people solved
Jul 11, 2026
Uber logo
Uber
Hard
Software Engineer

Design driver heat map and discuss consensus

Design driver heat map and discuss consensus Real-Time Driver Heat Map with Top-K Busiest Cells, Plus Paxos vs. Raft Context You are designing a real-...

System DesignGeo & Delivery SystemsConsensus & Replication
33
0
286 people solved
Aug 4, 2025
Asana logo
Asana
Medium
Software Engineer

Explain code complexity and design two games

You are given three independent interview prompts. 1) Code comprehension & complexity - Given two short code snippets (language-agnostic), explain in ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
59
0
414 people solved
Feb 8, 2026
Waymo logo
Waymo
Easy
Data Scientist Locked

Model wins-until-failure and expected future wins

This question evaluates probabilistic modeling and statistical inference skills for censored time-to-event performance data, focusing on estimating pl...

Statistics & MathProbabilitySampling & Estimation
22
0
247 people solved
Jan 17, 2026
Disney logo
Disney
Medium
Software Engineer

Implement BFS shortest path in grid

Implement a function that returns the length of the shortest path in an unweighted 2D grid from the top-left cell (0, 0) to the bottom-right cell (m-1...

Coding & Algorithms
9
0
103 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Easy
Data Scientist

Compute average unique pins per user

Task: Average Unique Pins Per User You are given a mapping from user IDs to their lists of pin IDs. Implement a function that computes the mean number...

Coding & AlgorithmsArrays & Strings
23
0
171 people solved
Oct 13, 2025
Instacart logo
Instacart
Medium
Software Engineer

Compute and optimize average wait time

You are given n pickup orders for a grocery delivery counter. Each order i is described by orders[i] = [arrival_i, service_i] in minutes, where arriva...

Coding & AlgorithmsSimulation & State MachinesHeaps & Priority Queues
24
0
169 people solved
Jul 31, 2025
Remitly logo
Remitly
Hard
Software Engineer

Whiteboard and Deep Dive a Past Project

System Design: End-to-End Architecture Walkthrough Prompt Whiteboard the end-to-end architecture of a complex, user-facing system you led. Cover: 1. M...

System DesignProject Deep DiveSystem Design Fundamentals
12
0
138 people solved
Aug 13, 2025
Shopify logo
Shopify
Medium
Machine Learning Engineer AI Locked

Simulate a rover fleet

This question evaluates skills in simulation design, state management, grid-based movement logic, and handling constraints such as obstacles, boundari...

Coding & Algorithms
4
0
61 people solved
Mar 1, 2026
Google logo
Google
Hard
Data Scientist

Experimentally evaluate jogging-route recommendations

Design an Evaluation for Jogging Route Recommendations in Maps Objective Design an A/B test and evaluation framework for recommending optimal jogging ...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing
15
0
167 people solved
Oct 13, 2025
Google logo
Google
Medium
Data Scientist

Resolve Team Disagreement on Off-Site Activity Choice

Resolve Team Disagreement on Off-Site Activity Choice Behavioral Scenario: Off-site Activity Disagreement Context You’re organizing a team off-site fo...

Behavioral & Leadership
11
0
106 people solved
Aug 4, 2025
Airtable logo
Airtable
Hard
Software Engineer

Design JSON serialization for circular references

Design a JSON Serialization/Deserialization Strategy With Cycles and Determinism You are designing a JSON-based serializer/deserializer for a graph of...

System DesignParsing & InterpretersGraphs
36
0
402 people solved
Sep 6, 2025
Google logo
Google
Hard
Software Engineer

Count same-color squares in a character grid

You are given a 2D grid (matrix) of characters. Each character represents a color: cells with the same character are considered the same color. Formal...

Coding & AlgorithmsDynamic ProgrammingGrids & Matrices
20
3
244 people solved
Nov 22, 2025
DoorDash logo
DoorDash
Hard
Analytics Engineer

Walk Through an ETL Project

For an Analytics Engineer interview, walk through an ETL project you built end to end. Describe the business goal, source systems, ingestion pattern, ...

Behavioral & Leadership
10
0
99 people solved
Oct 12, 2025
Stripe logo
Stripe
Medium
Data Engineer

Compute shipping cost with tiered pricing

You are building a shipping-cost calculator. Each order contains line items, and shipping rules vary by destination country and product. Assume: - Ord...

Coding & Algorithms
12
0
139 people solved
Feb 16, 2025
Chime logo
Chime
Medium
Data Scientist

Write SQL for noisy A/B launch metrics

PostgreSQL. Today is 2025-09-01. You’re given the following schema and toy samples: users(user_id INT, country TEXT, signup_date DATE, marketing_chann...

Data Manipulation (SQL/Python)
3
0
36 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Critique Shell Script for Credit-Card Program Tech Round

Critique Shell Script for Credit-Card Program Tech Round Scenario Tech round for a new credit-card program: candidate is shown a 5-6 line shell script...

Coding & AlgorithmsProgramming LanguagesOperating Systems
23
0
213 people solved
Aug 4, 2025
Apple logo
Apple
Medium
Software EngineerNew Grad

Solve interval, grid-fill, and heap tasks

You are asked to solve the following algorithmic problems. Problem 1: Concurrent users from online intervals You are given n inclusive time intervals ...

Coding & AlgorithmsIntervals & SchedulingGrids & Matrices
19
0
243 people solved
Nov 27, 2025
Reddit logo
Reddit
Hard
Machine Learning Engineer Locked

Design comment ranking

This question evaluates competency in designing large-scale machine learning ranking systems, testing skills such as candidate generation, label and t...

ML System DesignRanking ModelsFeature Engineering
26
0
185 people solved
Mar 2, 2026
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