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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
Citadel logo
Citadel
Medium
Data Scientist

Implement two-pointer unique-pair sum search

Implement two-pointer unique-pair sum search Given a nondecreasing integer array nums and an integer target, return all unique value pairs [a, b] with...

Coding & AlgorithmsTwo Pointers & Sliding Window
12
0
124 people solved
Jul 27, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Discuss mutexes, memory alignment, polymorphism, idempotency

In this interview round, you are asked several conceptual software-engineering questions. Answer all parts clearly and concisely, using examples. --- ...

Software Engineering FundamentalsConcurrencyMemory Management
9
0
109 people solved
Oct 28, 2025
Snapchat logo
Snapchat
Medium
Machine Learning Engineer Locked

Find all quadruplets summing to target

This question evaluates competency in array algorithms, combinatorial search, and handling duplicates with index-uniqueness constraints, and falls und...

Coding & Algorithms
5
0
44 people solved
Feb 12, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Design a Fault-Tolerant Distributed Job Scheduler

Design a distributed job scheduler with durable acceptance, due-time sharding, queue dispatch, worker leases, heartbeats, retries, and status queries....

System Design
2
0
33 people solved
Jun 22, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Reconstruct route from unordered travel tickets

This question evaluates understanding of directed graph concepts and sequence reconstruction, assessing the ability to reason about ordered relationsh...

Coding & AlgorithmsGraphs
15
0
235 people solved
Jan 6, 2026
StackAdapt logo
StackAdapt
Easy
Machine Learning Engineer Locked

Maintain the Median of an Integer Stream

Design a MedianFinder that supports arbitrary integer insertions and constant-time median queries. Use balanced max and min heaps for the lower and up...

Coding & Algorithms
3
0
58 people solved
Aug 10, 2026
IXL Learning logo
IXL Learning
Medium
Software Engineer

Solve snake game, peak search, and task scheduling

Solve snake game, peak search, and task scheduling 1) Design a grid-based snake simulation that supports move(direction) operations on a W×H board. Th...

Coding & AlgorithmsSimulation & State MachinesBinary Search
9
0
150 people solved
Jul 17, 2025
Figma logo
Figma
Medium
Software Engineer

Share behavioral stories

Share behavioral stories Behavioral Interview Prompts for a Software Engineer (Technical Phone Screen) Context: In a technical phone screen focused on...

Behavioral & LeadershipAmbiguity & Decision MakingPrioritization & Tradeoffs
23
0
177 people solved
Aug 4, 2025
Reddit logo
Reddit
Medium
Machine Learning Engineer Locked

Analyze CTR Data and Train Model

This question evaluates end-to-end supervised machine learning competencies for tabular click-through rate prediction, including exploratory data anal...

Machine LearningSupervised LearningCTR Prediction & Ads ML
10
0
140 people solved
Feb 1, 2026
Netflix logo
Netflix
Medium
Data Scientist

How to Design Effective A/B Tests for Onboarding

Design Effective A/B Tests for Onboarding A consumer subscription app is launching a redesigned onboarding flow for newly registered users. The goal i...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
33
0
140 people solved
Jul 12, 2025
Coinbase logo
Coinbase
Hard
Data Scientist

Solve the 12-coin balance puzzle

The 12-Coin Counterfeit Puzzle (Three Weighings) You are given 12 visually identical coins. Exactly one of them is counterfeit. The counterfeit coin d...

Statistics & MathPuzzles & Brainteasers
24
0
196 people solved
Oct 13, 2025
Circle logo
Circle
Medium
Software Engineer

Implement a simplified multi-level banking system

Implement a simplified multi-level banking system Implement a simplified banking system with multi-level requirements. All operations accept a stringi...

Coding & AlgorithmsPayments & LedgersData Structure Design
18
0
163 people solved
Jul 17, 2025
Google logo
Google
Medium
Research ScientistSenior+ Locked

Connect Your Research Experience to a Team's Work and Goals

Practice connecting prior research to a team's current work, explaining motivation, and proposing a realistic first contribution. The response framewo...

Behavioral & Leadership
3
0
24 people solved
May 30, 2026
Bank of America logo
Bank of America
Medium
Data Scientist Locked

Show Initiative, Analytical Judgment, and Relationship Building

Practice examples of taking initiative, solving a complex problem through careful analysis, and building a trusted relationship with a teammate or cli...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
1
0
17 people solved
Sep 10, 2026
Meta logo
Meta
Medium
Software Engineer

Prepare answers for core behavioral questions

Behavioral Questions Set You are preparing for a behavioral interview. Be ready to answer the following questions clearly and concretely, ideally usin...

Behavioral & Leadership
8
0
73 people solved
Dec 7, 2025
Meta logo
Meta
Medium
Software Engineer Locked

Make a String Palindromic with at Most K Deletions

Decide whether deleting at most k characters can turn a string into a palindrome while preserving order. Explore memoized two-pointer choices, matchin...

Coding & Algorithms
7
0
60 people solved
Aug 8, 2026
Amazon logo
Amazon
Hard
Software Engineer

Design a keyboard and mouse input system

Question Design an input processing system that captures keyboard and mouse events and can reliably reconstruct what the user typed (answering "what d...

System DesignSystem Design FundamentalsArrays & Strings
11
0
110 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute dasher payout from API data

Given a REST endpoint GET /payout that returns each delivery’s components (base pay, distance/time bonuses, promotions, tips, fees, adjustments, taxes...

Data Manipulation (SQL/Python)
5
0
56 people solved
Sep 6, 2025
HubSpot logo
HubSpot
Medium
Software Engineer Locked

Design a video streaming platform like Netflix/YouTube

This question evaluates a candidate's competence in designing large-scale video streaming systems, covering distributed systems architecture, scalabil...

System DesignFile & Media StorageCaching
22
0
157 people solved
Jan 22, 2026
Lyft logo
Lyft
Medium
Machine Learning EngineerIntern

Explain Transformer and Fine-Tuning Basics

You are interviewing for an AI-focused engineering internship. Explain the following: 1. What is the difference between a transformer model and an emb...

Machine LearningTransformers & AttentionFine-Tuning & Alignment Techniques
17
0
157 people solved
Mar 12, 2026
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