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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
Roblox logo
Roblox
Hard
Data Scientist

Compute DID estimate and pretrend flag

You are given three equal-length arrays describing observations from a panel-like dataset: - period[i] ∈ {0,1}: 0 = pre period, 1 = post period - trea...

Analytics & ExperimentationCausal InferenceArrays & Strings
15
0
122 people solved
Nov 24, 2025
Gong logo
Gong
Medium
Software EngineerSenior+

Driving a Project Forward When Goals and Requirements Are Ambiguous

Tell the interviewer about a project or role in which the goal, the requirements, the ownership or the path forward was unclear, and walk through how ...

Behavioral & LeadershipAmbiguity & Decision MakingOwnership & Execution
1
0
9 people solved
Aug 25, 2026
Google logo
GoogleBloomberg
Easy
Software Engineer

First Index Equal to Its Value's Digit Sum

First Index Equal to Its Value's Digit Sum You are given an integer array nums, indexed from zero. Return the smallest index i for which the sum of th...

Coding & AlgorithmsArrays & StringsMath & Number Theory
0
0
4 people solved
Apple logo
Apple
Medium
Machine Learning Engineer

Design Apple News without ML

Design an initial search and content-discovery system for a news application similar to Apple News, assuming you do not have a trained ranking model y...

System DesignSearch & Feed SystemsSearch Relevance
13
0
119 people solved
Dec 17, 2025
Google logo
Google
Medium
Software Engineer

Design a multi-timer using single underlying timer

You are given a Timer class that has access to a single underlying system timer API that can only keep one active timer at a time. Underlying single-t...

Software Engineering FundamentalsHeaps & Priority QueuesData Structure Design
28
0
209 people solved
Dec 4, 2025
Intuit logo
Intuit
Medium
Data Scientist

Calculate Precision, Recall, and F1

Question You are given a list of binary classification outputs, where class 1 is the positive class. Each record contains: - actual (INT, 0 or 1) - pr...

Statistics & MathModel Evaluation
20
1
201 people solved
Feb 10, 2026
Zomato logo
Zomato
Medium
Product Manager

Zomato international expansion: market assessment, localization and launch sequencing

As a product manager at Zomato, how would you launch it in a country where it does not operate today? Explain how you would assess the market, what yo...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
10 people solved
Jun 7, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software EngineerSenior+ Locked

Design a Workspace Resource Manager

This question tests a candidate's ability to design and implement a tree-structured data model with efficient CRUD operations in memory. It evaluates ...

Coding & Algorithms
9
0
78 people solved
Jun 8, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Resolve Conflict Within a Team

Tell a fair, specific story about a team conflict that materially affected the work. Explain the underlying disagreement, your own contribution and mi...

Behavioral & Leadership
2
0
20 people solved
Aug 21, 2026
Amazon logo
Amazon
Easy
Software EngineerNew Grad

Implement Interview Coding Problems

Solve the following independent coding tasks from a new-grad software engineering interview. 1. Implement a hash map from scratch. - Support integer k...

Coding & Algorithms
8
0
134 people solved
Nov 22, 2025
Atlassian logo
Atlassian
Medium
Machine Learning Engineer

Design a Jira+Confluence RAG assistant

You are asked to design a simple Retrieval-Augmented Generation (RAG) system that answers employee questions using content from two internal products:...

ML System Design
21
0
155 people solved
Nov 21, 2025
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Design a live sports score search feature with near-real-time score updates

Design the search feature of a sports app that covers live games. A user types a team name, a league or a matchup, and the app returns the matching ga...

System DesignSearch & Feed SystemsFault Tolerance & Failover
0
0
14 people solved
Apr 3, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Grid Infection

This question evaluates skills in multi-source breadth-first search, synchronous simulation updates, boundary handling, and off-by-one correctness wit...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
35
0
238 people solved
Mar 9, 2026
TikTok logo
TikTok
Easy
Software EngineerIntern Locked

Explain TLS Handshakes and HTTPS Traffic Inspection

Explain TLS handshakes, certificate validation, and symmetric traffic protection, then distinguish HTTPS proxy interception from passive decryption.

Software Engineering FundamentalsCryptographyNetworking
4
0
63 people solved
Sep 5, 2026
Google logo
GoogleAmazonMetaBloomberg

Also asked at Meta, Bloomberg

Medium
Software Engineer

Find the First Query Prefix That Can Make an Array Zero

Find the First Query Prefix That Can Make an Array Zero Problem You are given a nonnegative integer array nums and a list of queries. Query [l, r, val...

Coding & AlgorithmsBinary SearchArrays & Strings
1
0
9 people solved
Google logo
Google
Medium
Software Engineer Locked

Consolidate On-Call Rotation Segments

This question evaluates proficiency with interval manipulation, set management, sorting and event ordering, and the use of appropriate data structures...

Coding & Algorithms
26
0
156 people solved
May 25, 2026
Robinhood logo
Robinhood
Easy
Software Engineer

Compute trigger counts in a DAG

You are given a directed acyclic graph (DAG) that represents trigger dependencies between tasks. - Each node represents a task. - There is exactly one...

Coding & AlgorithmsGraphsDynamic Programming
16
0
213 people solved
Dec 8, 2025
Stripe logo
Stripe
Medium
Data Scientist

Choose threshold under costs and uncertainty

Incentive Targeting: Threshold Selection, Uncertainty, Calibration, and Drift Context: You deploy a model that sends an incentive to predicted positiv...

Statistics & Math
6
0
65 people solved
Oct 13, 2025
Atlassian logo
AtlassianGoogleMeta

Also asked at Meta, Amazon, Microsoft, Yandex, Bloomberg, Fractal Analytics, Tinkoff, Infosys, Adobe, Zoho

Medium
Software Engineer Locked

Check if one string is a subsequence of another

This question evaluates understanding of string algorithms and subsequence detection, focusing on sequence traversal, edge-case handling, and time/spa...

Coding & Algorithms
8
1
115 people solved
Optiver logo
Optiver
Hard
Software Engineer

Design and backtest a trading strategy

Minute-Level Mean-Reversion Strategy: Design, Backtest, Validation, and Significance Context You are given minute-level OHLCV data (open, high, low, c...

Analytics & ExperimentationPortfolio Construction & Alpha ResearchHypothesis Testing
29
0
548 people solved
Aug 13, 2025
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