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

"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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Netflix

Medium

Software Engineer

Implement topological sort from string input

You receive N lines of raw text describing task dependencies, e.g., 'install A after B', 'C->A', 'B before D'. Implement a function that: ( 1) parses ...

Coding & AlgorithmsParsing & InterpretersGraphs

Implement a banking operations system

Implement a simple banking system that manages multiple accounts with initial balances. Support operations: deposit(accountId, amount), withdraw(accou...

Coding & AlgorithmsData Structure Design

Experimentally evaluate jogging-route recommendations

Design an Evaluation for Jogging Route Recommendations in Maps Objective Design an A/B test and evaluation framework for recommending optimal jogging ...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing

Software EngineerNew Grad

How Would You Optimize a Program

You are given an existing program that produces correct results but is too slow in production. Describe a structured plan to optimize it. Your answer ...

System DesignDebuggingMemory Management

Count vowel-only substrings with all vowels

Count vowel-only substrings with all vowels Given a lowercase English string s, return the number of contiguous substrings that ( 1) consist only of v...

Coding & AlgorithmsTwo Pointers & Sliding Window

Software EngineerSenior+ Locked

Change Direction When New Evidence Invalidates Your Plan

Describe a material project pivot triggered by evidence that invalidated the original plan. State the initial hypothesis, verify the disconfirming sig...

Behavioral & Leadership

Perform no-calculator math accurately and fast

Technical Screen: Mental Math and Estimation Solve quickly without a calculator. For each, show the brief mental shortcut you use. Problems - (a) 37 ×...

Statistics & MathMath & Number Theory

Describe a challenging project

Behavioral Question Describe one project you worked on that was particularly challenging. Please cover: - Context: What was the goal and your role/own...

Behavioral & LeadershipProject Deep Dive

308 people solved

Feb 11, 2026

Design a location-based radius top-K search

Design a location-based search service. Input: - latitude, longitude - radius (meters) - K Output: - The top K locations within the radius. The term “...

System DesignGeo & Delivery SystemsStorage & Sharding

Assess Spring IoC, AOP, JDBC, Security

Assess Spring IoC, AOP, JDBC, Security Spring Framework — Multi-part Questions Context: You are building/maintaining a Spring-based service for a take...

Software Engineering FundamentalsAuthentication & Authorization

Explain ML evaluation, sequence models, and optimizers

Scenario An interviewer is deep-diving into an ML project you built (you can assume it is a supervised model unless specified otherwise). They want yo...

Machine LearningModel EvaluationTransformers & Attention

Walk Through an ETL Project

For an Analytics Engineer interview, walk through an ETL project you built end to end. Describe the business goal, source systems, ingestion pattern, ...

Behavioral & Leadership

Decode an Encrypted Paragraph Tree

Decode an Encrypted Paragraph Tree A document is stored as a tree of paragraphs. Each node holds a paragraph text — a string of lowercase English lett...

Coding & AlgorithmsTreesParsing & Interpreters

Walk through an A/B test end-to-end

Walk through how you would design, run, and analyze an A/B test for a product change. Your answer should include: - Hypothesis framing and choosing pr...

Analytics & ExperimentationExperiment Design (A/B Testing)Hypothesis Testing

Thread Safety, Deadlock Prevention, and Arrays vs Linked Lists

In a rapid-fire concepts segment of a software engineering interview, the interviewer asked four short questions in a row about concurrency and basic ...

Software Engineering FundamentalsConcurrencyLinked Lists

How do you lead under risk and uncertainty?

Answer the following engineering leadership questions (EM/Senior level). Use specific examples. 1. Tell me about a time you rejected a technically exc...

Behavioral & LeadershipAmbiguity & Decision MakingConflict & Collaboration

Machine Learning Engineer Locked

Design a scalable chatbot platform

This question evaluates a candidate's ability to design a scalable, production-grade chatbot platform that integrates ML-based inference, multi-turn c...

Find minimal property set in neighborhood

You are given a list of properties, each Property(id: int, neighborhood: string, capacity: int). Given a targetNeighborhood (string) and groupSize (in...

Coding & AlgorithmsGreedy

Software Engineer Locked

Kth Largest Perfect Binary Subtree

This question evaluates a candidate's ability to combine tree traversal with structural validation, requiring recognition of perfect binary subtrees a...

Explain How You Use AI in Engineering Work

Explain How You Use AI in Engineering Work Prompt How do you use AI-assisted tools in your day-to-day engineering work? Give one concrete example, exp...

Behavioral & LeadershipAI-Assisted Development

50 people solved

May 6, 2026

Tech Interview Questions

Implement topological sort from string input

Implement a banking operations system

Experimentally evaluate jogging-route recommendations

How Would You Optimize a Program

Count vowel-only substrings with all vowels

Change Direction When New Evidence Invalidates Your Plan

Perform no-calculator math accurately and fast

Describe a challenging project

Design a location-based radius top-K search

Assess Spring IoC, AOP, JDBC, Security

Explain ML evaluation, sequence models, and optimizers

Walk Through an ETL Project

Decode an Encrypted Paragraph Tree

Walk through an A/B test end-to-end

Thread Safety, Deadlock Prevention, and Arrays vs Linked Lists

How do you lead under risk and uncertainty?

Design a scalable chatbot platform

Find minimal property set in neighborhood

Kth Largest Perfect Binary Subtree

Explain How You Use AI in Engineering Work

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