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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Tesla logo
Tesla
Easy
Software Engineer Locked

Design a JSON Merge API with Pluggable Behaviors

Design a non-mutating JSON merge API with selectable overwrite or append behavior for arrays. Define recursive object handling and exact semantics for...

Software Engineering Fundamentals
9
0
115 people solved
Aug 5, 2026
UiPath logo
UiPath
Medium
Machine Learning Engineer

Probability a draw-until-threshold score ends at or below a limit

A player starts with 0 points and draws repeatedly. Each draw adds an integer chosen uniformly at random from 1 to max_points (inclusive) to the playe...

Coding & AlgorithmsDynamic ProgrammingProbability
0
0
9 people solved
Sep 9, 2026
NVIDIA logo
NVIDIA
Hard
Software EngineerSenior+ Locked

Design a Multi-Producer Multi-Consumer Circular Buffer

Design a fixed-capacity circular buffer for multiple concurrent producers and consumers, with blocking operations and close-and-drain behavior. Explai...

Software Engineering FundamentalsConcurrencyData Structure Design
28
0
265 people solved
Jul 16, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer Locked

Explain Core ML Training, Evaluation, and Transformer Concepts

Review overfitting, class imbalance, optimizer behavior, classification metrics, and Transformer architecture in one focused ML fundamentals discussio...

Machine Learning
4
0
39 people solved
Aug 28, 2026
Sig logo
Sig
Medium
Quantitative Trader

Bayesian Posterior That k Red Parts Came From Factory A

Two factories make the same part in two colors. Factory A's output is $a\%$ red and $(100-a)\%$ black. Factory B's output is $b\%$ red and $(100-b)\%$...

Statistics & MathProbabilityBayesian Statistics
0
0
4 people solved
Sep 19, 2026
Google logo
Google
Medium
Software Engineer Locked

Minimum Cars for Rental Requests

You receive rental requests, each with a unique request identifier, pickup time, and return time. Work through the function contract, boundary cases, ...

Coding & AlgorithmsIntervals & SchedulingHeaps & Priority Queues
20
0
132 people solved
Aug 1, 2026
Amazon logo
Amazon
Medium
Applied ScientistSenior+

From Early NLP Embeddings to Modern LLM Embeddings

From Early NLP Embeddings to Modern LLM Embeddings Explain how natural-language processing moved from sparse lexical representations to learned embedd...

Machine Learning
3
0
54 people solved
Aug 15, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Explain the Most Complex Project You Have Delivered

Describe the most complex project you have worked on. Explain what made it complex, your own contribution, the key tradeoffs, and the outcome. Constra...

Behavioral & LeadershipProject Deep Dive
1
0
14 people solved
Aug 30, 2026
xAI logo
xAI
Medium
Frontend Engineer

Render Nested JSON in a Code-Style Viewer

Implement a React viewer that displays a supplied JSON object in a code-editor-like format. Show nested structure clearly without making the content e...

Software Engineering FundamentalsReact & UI FrameworksTrees
1
0
15 people solved
Sep 15, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design the GPU Job Scheduler for a Text-to-Video Generation Service

This system design question evaluates a candidate's ability to design a resource-scheduling layer for scarce, expensive compute under sustained overlo...

System DesignGPU InfrastructureJob Scheduling & Workflows
70
1
1275 people solved
Jun 26, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Serialize a List of Arbitrary Strings into One String and Back, Then Compare Schemes

Two components exchange data over a channel that carries exactly one string per message. You need to send a whole list of strings through it: the send...

Software Engineering FundamentalsParsing & Interpreters
0
0
11 people solved
Sep 11, 2026
Datadog logo
Datadog
Medium
Software Engineer Locked

Match Registered Word Queries Against a Log Stream

Process an ordered stream that registers word queries and reports which prior queries fully match each log message. The specification fixes query IDs,...

Coding & Algorithms
5
0
106 people solved
Jun 30, 2026
Capital One logo
Capital One
Medium
Software Engineer

Find the Top-Left Submatrix Matching a Grid Pattern With Letter Variables

You are given a matrix of integers and a pattern grid with p rows and q columns. Each pattern cell is either a number, which must equal the matrix val...

Coding & AlgorithmsGrids & Matrices
2
0
22 people solved
Aug 4, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design Parsing Boundaries for Interdependent Message Types

A protocol-buffer-related parsing task includes dependencies on newly defined message types. Explain which input and output details you would clarify,...

Software Engineering FundamentalsParsing & InterpretersProgramming Languages
2
0
32 people solved
Jun 17, 2026
Voleon logo
Voleon
Medium
Software Engineer

Simulate an exchange and participation-rate trading

Implement a simplified trading simulation in three parts. Part 1 — Process market data / exchange interaction (order book) Design a minimal limit-orde...

Coding & AlgorithmsTrading SystemsData Structure Design
115
0
935 people solved
Dec 9, 2025
Capital One logo
Capital One
Medium
Software EngineerSenior+

Design an Enterprise Agent Platform with Guardrails and Latency Control

Design an enterprise agent platform. Explain the platform's execution architecture, how you choose between an agent and a predefined workflow, where g...

System DesignAI AgentsAI Safety & Alignment
0
0
10 people solved
Sep 9, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Define Success for a New Group Feature Without Hiding Cannibalization

Build a success framework for a social Groups feature by separating adoption from durable user value and measuring cannibalization, network spillovers...

Analytics & ExperimentationExperiment Design (A/B Testing)Metrics & KPIs
18
0
150 people solved
Jul 6, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer Locked

Implement Backprop for a Tiny Network

This question evaluates understanding of backpropagation, gradient derivation, numerical stability of softmax cross-entropy, and practical implementat...

Machine LearningML CodingNeural Networks & Training
204
0
1754 people solved
Apr 3, 2026
Optiver logo
Optiver
Medium
Software Engineer Locked

Design a Multi-Level Expiring Item Store

Design a class with initialization, store, and retrieve operations for items placed into ordered storage levels. Make the API or object boundaries exp...

Software Engineering FundamentalsData Structure Design
38
0
412 people solved
Jul 23, 2026
Snowflake logo
Snowflake
Medium
DevOps Engineer Locked

Present Your Infrastructure and Platform Experience

Present one infrastructure or platform project through its users, architecture, reliability model, deployment path, observability, tool choices, and y...

Behavioral & Leadership
10
0
71 people solved
Aug 19, 2026
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