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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Meta logo
Meta
Medium
Machine Learning Engineer

Answer core behavioral questions using STAR

Prepare structured answers (use STAR: Situation, Task, Action, Result) for the following common behavioral prompts: 1. Most proud project: Describe a ...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
11
0
105 people solved
Dec 15, 2025
Snowflake logo
Snowflake
Medium
Software Engineer Locked

Compute effective permissions on DAG and prune tree

This set of problems evaluates proficiency in graph and tree algorithms, specifically transitive state propagation and conflict resolution on a DAG (e...

Coding & AlgorithmsGraphsTrees
31
0
303 people solved
Feb 12, 2026
Pinterest logo
Pinterest
Medium
Software Engineer

Implement string-based big integer multiplication

Question Implement multiplyStrings(a, b) to multiply two non-negative integers given as decimal strings and return their product as a decimal string. ...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
30
0
232 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Data Scientist

Write SQL for fares and age-band counts

You have two tables. Schema: - drivers(driver_id VARCHAR PRIMARY KEY, name VARCHAR, date_of_birth DATE) - trips(trip_id VARCHAR PRIMARY KEY, driver_id...

Data Manipulation (SQL/Python)SQL
6
1
68 people solved
Oct 13, 2025
Google logo
Google
Hard
Software Engineer Locked

Find conflicting pair using black-box run()

This question evaluates algorithm design and query-complexity reasoning, focusing on efficient search strategies for identifying an interacting pair v...

Coding & AlgorithmsBinary SearchDebugging
19
1
170 people solved
Jan 15, 2026
Google logo
Google
Medium
Software EngineerNew Grad

Describe teamwork and personal achievements

The interview included several behavioral questions: 1. Tell me about a time you helped a teammate who was underperforming. 2. Describe the most chall...

Behavioral & LeadershipMentoring & Team GrowthProject Deep Dive
24
0
255 people solved
Apr 1, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a crossword puzzle solver system

This question evaluates algorithm design, constraint solving, efficient lookup data structures, and system scalability for handling large dictionaries...

System DesignBacktracking & RecursionString Algorithms
56
0
425 people solved
Feb 11, 2026
Coinbase logo
Coinbase
Medium
Product Manager

Coinbase Product Sense: A Social and Community Layer for Crypto Users

You are a product manager at Coinbase and have been asked to bring social features into the product. Explain why social features would serve Coinbase ...

Product Design & StrategyProduct Design & ImprovementMetrics & KPIs
0
0
10 people solved
Feb 28, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Evaluate a Migration from MySQL to MongoDB

A team proposes migrating an existing MySQL-backed service to MongoDB. Explain how you would decide whether the migration is justified, compare the da...

System Design
4
0
38 people solved
Aug 13, 2026
MathWorks logo
MathWorks
Medium
Software Engineer

Compute intersections for each segment

You are given $n$ segments on a number line. Segment $i$ is the closed interval $[\text{startsAt}[i], \text{endsAt}[i]]$ (inclusive endpoints), with $...

Coding & Algorithms
6
0
85 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Build a time-based key-value store

Problem Design a data structure that stores multiple values for the same key at different timestamps, and can retrieve the most recent value as of a g...

Coding & AlgorithmsData Structure DesignBinary Search
10
0
106 people solved
Oct 14, 2025
Reddit logo
Reddit
Hard
Data Scientist

Justify synthetic control and handle inference

Synthetic Control: Assumptions, Estimation, Inference, and Diagnostics Context You are estimating the causal effect of an intervention on a single tre...

Statistics & MathCausal InferenceHypothesis Testing
14
0
205 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+

Determine Whether a Binary Tree Is a Valid BST

Determine Whether a Binary Tree Is a Valid BST Problem Given a binary tree, determine whether the entire tree satisfies the strict binary-search-tree ...

Coding & Algorithms
3
0
38 people solved
Apr 15, 2026
AMD logo
AMD
Easy
Software Engineer

PCIe deep dive: TS1/TS2, LTSSM link training, TLP types and transaction ordering rules

You are interviewing for a PCI Express (PCIe) verification role, and the interviewer goes deep on the protocol: from link training at the physical lay...

Software Engineering Fundamentals
4
0
65 people solved
Apr 30, 2024
Boston Consulting Group logo
Boston Consulting Group
Medium
Data Scientist

Explain AUC, activations, ensembles, and imbalance

Machine Learning Metrics and Modeling Choices — Multi-part You are given model scores and binary labels for a small dataset and asked to compute ROC A...

Machine LearningModel EvaluationML Fundamentals
20
0
142 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Hard
Software Engineer Locked

Least Frequently Used (LFU) Cache

This question tests practical data structure design by requiring an O(1) implementation of a Least Frequently Used cache with tie-breaking by recency....

Coding & Algorithms
4
0
37 people solved
Jun 20, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Describe Delivering Under a Tight Deadline

This question evaluates ownership, judgment, prioritization, and the ability to deliver results under time pressure, including how the candidate balan...

Behavioral & LeadershipOwnership & Execution
19
4
303 people solved
May 2, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Determine Whether Package Weights Can Be Safely Arranged

Decide whether package weights from zero through nine can be reordered so every adjacent sum stays below ten, including repeated values and separator ...

Coding & AlgorithmsGreedy
18
0
206 people solved
Aug 19, 2026
Lyft logo
Lyft
Medium
Software Engineer

Implement pagination and a time-versioned key-value store

Implement two coding tasks: 1) Transaction pagination: Given an in-memory collection of transaction records with fields (txn_id: string, user_id: stri...

Coding & AlgorithmsData Structure DesignAPI Design
15
0
231 people solved
Sep 6, 2025
Disney logo
Disney
Easy
Software Engineer

Design a frontend shopping cart and feature flags

Scenario You are designing frontend-focused systems for a large e-commerce web app. Part A — Shopping cart (frontend focus) Design the shopping cart e...

System DesignState ManagementExperiment Design (A/B Testing)
23
0
191 people solved
Nov 24, 2025
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