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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
Google logo
GoogleAmazonBloomberg

Also asked at Bloomberg, Meta, Microsoft, IBM, Infosys, TCS, Goldman Sachs, Arista Networks

Medium
Software Engineer

Erase the Earliest Matching Block Repeatedly

Problem Starting with lowercase string s, repeatedly delete the leftmost occurrence of the nonempty string part. Search the updated string after each ...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Roblox logo
Roblox
Medium
Product Manager

Product Sense: Bringing Build-A-Bear to Roblox Through a Brand Partnership

Roblox is partnering with Build-A-Bear. As a product manager at Roblox, design a product for the experience this collaboration should create. `hint Se...

Product Design & StrategyProduct SenseProduct Strategy
0
0
9 people solved
Jul 19, 2026
Barclays logo
Barclays
Easy
Data Scientist Locked

Determine Worker Counts from Production Ratios

Solve a production-ratio word problem by converting the 2-to-1 item ratio into nail and screw quantities before applying each worker's daily output. T...

Statistics & Math
8
1
59 people solved
Aug 20, 2026
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Design a Product Image Upload Pipeline for Sellers

Design a seller-facing product image pipeline from direct upload through validation, transformation, moderation, and delivery. Address replacement and...

System Design
14
0
110 people solved
Aug 22, 2026
Intuit logo
Intuit
Medium
Software EngineerSenior+ Locked

Design a "Future Best-Sellers" Prediction and Recommendation System

This question evaluates a candidate's ability to design a large-scale ML/forecasting system that combines predictive modeling with low-latency serving...

ML System DesignSystem Design FundamentalsTime Series & Forecasting
14
0
138 people solved
Jun 30, 2026
Spotify logo
Spotify
Medium
Product Manager

Spotify: Deciding Whether to Build Live Artist Broadcasts

You are a product manager at Spotify. Leadership is weighing a feature that would let artists broadcast live to listeners inside the Spotify app. Shou...

Product Design & StrategyProduct StrategyMarket & Competitive Analysis
0
0
12 people solved
Aug 18, 2026
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Meta, Microsoft

Easy
Software Engineer

Locate a Subtree by Its Search Key

Problem Given the root pointer of a binary search tree and val, return the existing node whose value equals val, including its entire subtree. Return ...

Coding & AlgorithmsTrees
0
0
9 people solved
Google logo
GoogleTaniumMicrosoftAmazon

Also asked at Microsoft, Amazon

Medium
Software Engineer

Can Fixed-Length Jumps Reach a Zero?

Problem Begin at index start of the nonnegative array arr. From index i, the next jump must land at i+arr[i] or i-arr[i], and must stay inside the arr...

Coding & AlgorithmsGraphs
1
0
16 people solved
Nextdoor logo
Nextdoor
Medium
Machine Learning Engineer

Merge overlapping weekly time intervals

You are given a list of time intervals representing meetings. Each interval is a pair of strings in the format: - "<Day> <H>:<MM>" (24-hour time) - <D...

Coding & AlgorithmsIntervals & SchedulingSorting
25
0
194 people solved
Mar 1, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Implement sliding-window rate limiter function

This question evaluates proficiency with streaming algorithms and sliding-window data structures, focusing on time-based rate limiting, efficient coun...

Coding & AlgorithmsRate LimitingStacks & Queues
16
1
234 people solved
Feb 11, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Design a Scalable Calendar Service

Design calendar event storage and time-range reads, explain concurrent edits and scaling, and clarify recurrence and notification requirements.

System DesignSystem Design FundamentalsStorage & Sharding
11
0
85 people solved
Sep 12, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Machine Learning Engineer Locked

Design an Entitlement-Aware Agentic Portfolio Workflow

Design an entitlement-aware agentic workflow that can answer portfolio requests while keeping authorization outside the model. Evaluation centers on o...

System Design
8
0
95 people solved
Aug 5, 2026
Microsoft logo
MicrosoftGoogleAmazon

Also asked at Amazon, Oracle, Meta, Snowflake, Bloomberg, PayPal, NVIDIA, Uber, Gopuff, Zoho

Medium
Software Engineer

Largest Number of One-Day Event Attendances

Problem Event[start,end] may be attended on any one integer day in its inclusive interval. Attend at most one event per day and each event at most onc...

Coding & AlgorithmsGreedyIntervals & Scheduling
1
0
11 people solved
Scale AI logo
Scale AI
Medium
Software Engineer

Design pipeline using classification and embedding services

You are given two black-box ML services: 1. Classification Service - Input: One or more text documents. - Output: A label for each document (e.g...

ML System DesignSystem Design FundamentalsAPI Design
194
1
1313 people solved
Dec 8, 2025
Reddit logo
Reddit
Hard
Data ScientistSenior+ Locked

Estimate Incremental Search-Ad Revenue Without an A/B Test

Practice estimating incremental search-ad revenue when 100 eligible users are randomly assigned to treatment outside a conventional A/B platform. Defi...

Analytics & ExperimentationExperiment Analysis & ReadoutBusiness Case Analysis
26
0
176 people solved
Jun 24, 2026
Millennium logo
Millennium
Medium
Data Scientist Locked

Evaluate an Agentic Decision System End to End

Build an end-to-end evaluation program for an agent that routes tools and recommends operational decisions in place of fixed rules. Candidates must se...

Software Engineering FundamentalsLLM EvaluationAI Agents
15
0
139 people solved
Jul 30, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Elasticsearch Deep Dive: Index Mapping Design and How the Inverted Index Works

Your resume lists a backend project that uses Elasticsearch for search. The interviewer digs into the design decisions behind the project (why it was ...

Software Engineering FundamentalsSearch & Feed SystemsDatabase Internals
1
0
28 people solved
Sep 25, 2026
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, Goldman Sachs, Meta, Flipkart, Salesforce

Medium
Software Engineer

Maximize the Smallest Separation

Problem There are baskets at the distinct coordinates in position. Place exactly m balls, at most one in each basket. The separation of two balls is t...

Coding & AlgorithmsBinary SearchGreedy
0
0
8 people solved
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Explain Your AI Safety Values

Prepare evidence-based answers for an AI safety values interview, connecting beliefs to concrete decisions and past behavior. Explore uncertain risk, ...

Behavioral & LeadershipEthics & Responsibility
51
0
760 people solved
Jul 8, 2026
Anthropic logo
Anthropic
Medium
Product Manager

Dynamic Batching for Synchronous Model Inference on One GPU with a 100-Input Cap

Design the batching layer for a model server that runs inference on a single GPU. The GPU can process at most 100 inputs per batch, each caller submit...

System DesignTechnical Tradeoffs for PMsLLM Inference & Serving
3
0
24 people solved
Apr 30, 2026
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