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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Google
Medium
Software Engineer Locked

Design a Music Recommendation System with an LLM Agent

Design a music recommender with candidate generation, ranking, feedback loops, cold-start handling, diversity, and offline and online evaluation. Add ...

ML System Design
8
1
76 people solved
Aug 11, 2026
Waymo logo
Waymo
Medium
Software Engineer

Design a Global Caching Service for Small Images Backed by a Single Database

Design a global caching service for small images. The service is backed by a single database, which holds every image and is the source of truth. Desi...

System DesignCachingFault Tolerance & Failover
1
0
22 people solved
Sep 10, 2026
Roblox logo
Roblox
Medium
Software Engineer

Handle Release Risks and Cross-Team Blockers

Discuss the most effective and least effective ways to respond to the following workplace scenarios. Explain your reasoning and what additional inform...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
7
0
55 people solved
Aug 30, 2026
Netflix logo
Netflix
Medium
Software Engineer

Design ad frequency capping

Design an Ad Frequency Capping System Design a frequency capping system for an advertising platform. The system must ensure that a user does not see t...

System DesignAds SystemsRate Limiting
590
4
5474 people solved
Apr 15, 2026
Microsoft logo
Microsoft
Easy
Software Engineer

Handling a Deadline You Will Miss, and Why Adding Engineers Late Backfires

You own a task, and partway through you realize it cannot be delivered by its deadline. What do you do? This question came up in two behavioral rounds...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
0
0
9 people solved
Sep 30, 2026
IBM logo
IBM
Medium
Software Engineer Locked

Maximize Revenue from Depleting VM Stock

Practice maximizing revenue by repeatedly selling from the highest remaining VM stock, including harmless ties and large counts.

Coding & Algorithms
17
3
121 people solved
Aug 28, 2026
Okta logo
Okta
Medium
Software Engineer Locked

Scale an Authorization Checker

Extend the role-permission access checker for multithreaded and distributed execution, addressing consistency, concurrency, and scaling trade-offs.

System Design
3
0
48 people solved
Aug 20, 2026
ByteDance logo
ByteDance
Medium
Software EngineerNew Grad

Incremental n x n Tic-Tac-Toe Game-Over Check in O(n), Then O(1) per Move

An n x n tic-tac-toe game is played by players 1 and 2. A player wins by occupying all n cells of a row, a column, the main diagonal (cells (i, i)) or...

Software Engineering FundamentalsSimulation & State MachinesData Structure Design
1
0
15 people solved
Sep 13, 2026
DoorDash logo
DoorDash
Medium
Software EngineerSenior+

Build Two Interacting Services That Carry Out a Realistic Refund Flow

Implement a refund flow as two services that interact with each other to complete a refund. This is an AI-assisted coding round: an AI coding assistan...

Software Engineering FundamentalsPayments & LedgersDistributed Transactions & Idempotency
1
0
17 people solved
Sep 10, 2026
Snowflake logo
Snowflake
Medium
Machine Learning Engineer

Design and Implement a Rate Limiter with an AI Assistant, Then Defend and Test It

This onsite coding round allows AI assistants. You may bring your own laptop with any AI tools installed in advance, or use the interviewer's machine....

Software Engineering FundamentalsRate Limiting
1
0
19 people solved
Sep 7, 2026
Remitly logo
Remitly
Medium
Software Engineer

Behavioral Screen: Going Beyond Your Responsibility and a Time You Failed

A 45-minute technical screen for a software engineer role consists of one coding question and two behavioral questions. The candidate did not recall t...

Behavioral & LeadershipOwnership & ExecutionFailure & Learning
3
0
26 people solved
Sep 7, 2026
LinkedIn logo
LinkedIn
Medium
Machine Learning EngineerSenior+ Locked

Design an ML Forecasting and Pacing System for Ad Bidding

Design an ML forecasting and pacing system for ad bidding that keeps hard budget controls deterministic while handling time-correct training, delayed ...

ML System Design
4
0
91 people solved
Aug 13, 2026
Harvey logo
Harvey
Medium
Software Engineer

Design and Evaluate a Retrieval-Augmented Generation Pipeline

Design a retrieval-augmented generation pipeline over a document collection. Explain document chunking, retrieval, context assembly, and how you would...

ML System DesignRetrieval-Augmented GenerationLLM Evaluation
2
0
28 people solved
Sep 1, 2026
Fivetran logo
Fivetran
Easy
Software Engineer

Implement a SQL Engine's Storage Layer: Create Database, Schema, Table and Row CRUD

You are working inside a SQL engine. Earlier stages have already parsed, validated, and optimized each statement. Your job is the last step: the layer...

Software Engineering FundamentalsDatabase Internals
0
0
13 people solved
Sep 10, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Reuse Work Across Multiprocess Image Pipelines

Optimize multiprocess image pipelines by sharing deterministic prefix results through content-addressed identities, single-flight execution, and safe ...

Software Engineering Fundamentals
5
0
69 people solved
Aug 12, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Use AI to Reduce Repetitive Pipeline Development Work

How would you use AI to generate or modify a development pipeline and reduce repetitive work while retaining responsibility for the resulting behavior...

Software Engineering FundamentalsCI/CD & DeploymentTesting & Quality
2
0
18 people solved
Sep 10, 2026
Tesla logo
Tesla
Hard
Software EngineerSenior+

Senior Project Deep Dive: Design Rationale, Your Most Complex Project, Questions for the HM

Two parts of an onsite loop for a senior software engineer on an AI infrastructure team probed the candidate's past work. In a resume deep dive, the i...

Behavioral & LeadershipProject Deep Dive
3
0
25 people solved
Sep 7, 2026
Instacart logo
Instacart
Medium
Software EngineerSenior+

Parse Pipe-Delimited Order Lines: Totals, Cheapest Promotion per SKU, Aisle Ordering

You are building a small checkout helper that reads records whose fields are separated by |. The task grows in three steps; each step adds a new kind ...

Software Engineering Fundamentals
2
0
15 people solved
Sep 10, 2026
DocuSign logo
DocuSign
Easy
Software Engineer

Design a JSON Schema Validator

Design a JSON Schema Validator Design and implement a validator that accepts a schema JSON string and an object JSON string. Validate the declared obj...

Software Engineering Fundamentals
1
0
38 people solved
Aug 27, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Evaluating Generative AI Use and Accuracy

Discuss prior generative-AI projects, when generative AI is an appropriate tool, useful application patterns, and how to evaluate and improve output a...

Machine Learning
9
0
66 people solved
Sep 2, 2026
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