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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
OpenAI logo
OpenAI
Medium
Product Manager

OpenAI Product Strategy: First Feature to Help People Without Tech Skills Use AI

OpenAI wants its AI tools to be easier to use for people who have no technical background. As a product manager, which product or feature would you pu...

Product Design & StrategyAI Product ManagementPrioritization & Tradeoffs
2
0
17 people solved
Oct 1, 2026
Alibaba logo
Alibaba
Medium
Site Reliability Engineer

Production Incident Response and Linux Troubleshooting Commands for an SRE

In a screen for a Site Reliability Engineer role, the interviewer asked how you handle a production incident and how you troubleshoot a failure, down ...

Software Engineering FundamentalsReliability & SREOperating Systems
0
0
6 people solved
Oct 23, 2026
ByteDance logo
ByteDance
Hard
Software Engineer

Implement a binary min-heap and use it to order courses with prerequisites

In one coding round of about 30 minutes, you are asked to write a heap yourself and then to use it in a variant of the course-scheduling problem. Cons...

Software Engineering FundamentalsHeaps & Priority QueuesGraphs
1
0
26 people solved
Oct 4, 2026
Citi logo
Citi
Easy
Software Engineer

Use Java Enums to Model Finite States

What is an enum in Java, and why is it useful when programming a system with a finite set of states? Explain how an enum improves the representation a...

Software Engineering FundamentalsProgramming LanguagesSimulation & State Machines
0
0
6 people solved
Oct 23, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern Locked

Trace and Debug Agent Tool-Call Failures

Design tracing for agent tool calls with request and attempt identifiers, failure-stage evidence, safe logging, and explicit retry outcomes.

System DesignObservabilityAPI Integration & HTTP Clients
5
0
52 people solved
Aug 23, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Compute Matrix Prefix Products And Gradients

You are given $N$ square matrices $A[0], A[1], \dots, A[N-1]$, each of shape $D \times D$. Define the inclusive prefix (cumulative) products: $$Y[i] =...

Machine LearningML CodingNeural Networks & Training
123
2
1280 people solved
Apr 2, 2026
Sierra logo
Sierra
Hard
Software Engineer

Split Markdown Into Header-Aware Chunks

Implement a function that splits a Markdown document into ordered chunks, where each chunk must not exceed a given size limit. A Markdown header is a ...

Coding & AlgorithmsParsing & InterpretersArrays & Strings
45
0
651 people solved
Apr 3, 2026
Amazon logo
Amazon
Medium
Product Manager

Experiment Design to Measure Whether Voice Ordering Lifts Amazon Purchase Frequency

You are a product manager at Amazon. A new feature that lets customers shop by voice is being tested. Design an A/B test that would show whether the f...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
1
0
16 people solved
Oct 11, 2026
Robinhood logo
Robinhood
Hard
Data ScientistIntern

Order Fill Rate From Partial-Execution Records, and What Drives It

You receive a CSV export of order activity from a stock-trading app. Its columns are roughly dt, order_id, execution_price, execution_quantity, order_...

Data Manipulation (SQL/Python)Pandas & Python DataData Cleaning & Wrangling
0
0
6 people solved
Oct 28, 2026
Baseten logo
Baseten
Hard
Software Engineer Locked

Build a Crash-Consistent Single-Server Key-Value Store

Build a multithreaded single-server key-value store for byte-string keys and values on a local filesystem. Reason about record framing, tombstones, du...

Software Engineering FundamentalsKey-Value StoresDatabase Internals
21
0
274 people solved
Jul 26, 2026
Glean logo
Glean
Medium
Software Engineer

Find Which Words From a List Can Be Traced Through Adjacent Cells of a Letter Grid

You are given an m x n grid of lowercase letters and a list of words. A word can be traced in the grid if there is a sequence of cells whose letters s...

Coding & AlgorithmsBacktracking & RecursionGrids & Matrices
3
0
52 people solved
Sep 30, 2026
Cursor logo
Cursor
Medium
Software Engineer Locked

Design an In-Memory Transactional Key-Value Store

This Cursor software engineering question evaluates how a candidate designs a transactional in-memory key-value store with clear API semantics. It is ...

Software Engineering FundamentalsTransactions & Isolation
105
0
900 people solved
Jul 2, 2026
Google logo
Google
Hard
Data Analyst

Investigate a Decrease in Webpage Warnings

Investigate a Decrease in Webpage Warnings A system that warns users about malicious webpages shows a decrease in the number of warnings displayed. Ho...

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
2
0
37 people solved
Sep 9, 2026
Databricks logo
Databricks
Hard
Software EngineerSenior+ Locked

Implement Generalized Tic-Tac-Toe

Implement generalized Tic-Tac-Toe for two players on a rectangular board with a configurable consecutive-mark winning length. Handle horizontal, verti...

Coding & AlgorithmsSimulation & State Machines
36
1
333 people solved
Jul 7, 2026
Oracle logo
Oracle
Medium
Software Engineer

Design a URL shortener and defend its key-generation and storage trade-offs

Design a URL-shortening service. A user submits a long URL and receives a short link; anyone who opens the short link is redirected to the original UR...

System DesignSystem Design FundamentalsCaching
0
0
7 people solved
Oct 29, 2026
Apple logo
Apple
Hard
Software Engineer

Smallest Valid Task Order from Dependency Pairs (Topological Sort)

A project consists of n tasks labeled 0 to n - 1, done one at a time. Some tasks depend on others: a dependency pair [a, b] means task a must be finis...

Coding & AlgorithmsGraphsHeaps & Priority Queues
5
0
67 people solved
Aug 28, 2026
AMD logo
AMD
Medium
Software Engineer Locked

Use the Roofline Model to Analyze Prefill and Decoding

Apply roofline analysis to LLM prefill and decoding using arithmetic intensity, sustainable bandwidth, batching, KV-cache traffic, and measured kernel...

Software Engineering FundamentalsGPU ProgrammingLLM Inference & Serving
4
0
43 people solved
Sep 14, 2026
Google logo
GoogleAmazonMeta

Also asked at Meta, Microsoft, Bloomberg, Cisco, Oracle, Motive, Akamai, TikTok, Infosys, Morgan Stanley, Walmart Labs

Medium
Software Engineer

Find the Longest Balanced Binary Segment

Problem Return the greatest length of a contiguous subarray of nums containing equally many zeros and ones. Return zero if none exists. `cpp class Sol...

Coding & AlgorithmsArrays & Strings
1
0
16 people solved
Capital One logo
Capital One
Medium
Software Engineer Locked

Grid State After a Given Number of Days of Spoilage Spreading to Neighbors

A grid holds empty cells, fresh items and spoiled items, and each day spoilage spreads from every spoiled item to its edge-adjacent fresh neighbors. G...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
67 people solved
Sep 17, 2026
Snowflake logo
Snowflake
Medium
Software EngineerIntern Locked

Return the Prerequisite Route for a Target Course

Return a deterministic course plan containing one target and exactly its direct and indirect prerequisites. Restrict cycle detection to the required s...

Coding & Algorithms
30
0
217 people solved
Aug 23, 2026
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