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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Waymo logo
Waymo
Hard
Software Engineer

Count Squares Formed by Segments

Count Squares Formed by Segments You are given axis-aligned line segments with integer coordinates. Each segment is represented by two endpoints. One ...

Coding & Algorithms
5
0
87 people solved
May 5, 2026
Expedia logo
Expedia
Medium
Software Engineer Locked

Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict

Prepare concise real examples about production recovery, mentoring, a challenging project, responsible AI work, and substantive conflict. Effective an...

Behavioral & Leadership
3
0
27 people solved
Jul 16, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Slack-Like Messaging System

Design a Slack-like team messaging system focused on sending and receiving messages in real time. Your design should support workspaces with channels ...

System DesignReal-Time SystemsMessaging & Event-Driven
66
0
1010 people solved
Apr 26, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Split a Message into Length-Limited Parts with Numbered Suffixes

This Hudson River Trading software engineering question evaluates message splitting under strict length limits with numbered suffixes. It prepares can...

Software Engineering FundamentalsArrays & Strings
7
0
129 people solved
Jul 2, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design a production RAG system

Question Design a production retrieval-augmented generation (RAG) system for enterprise document QA. Walk through the end-to-end architecture and just...

ML System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
49
0
470 people solved
Aug 11, 2025
Disney logo
Disney
Medium
Data Engineer

Design a clickstream ingestion and aggregation pipeline for billions of events per day

Question You are designing the data platform for a large consumer streaming/media company. Client applications (web, mobile, smart TVs, set-top boxes)...

System DesignBatch & Stream ProcessingData Ingestion & CDC
15
0
197 people solved
Mar 27, 2026
Netapp logo
Netapp
Medium
Software Engineer Locked

Identify the Orchestrator in a Server Connection Graph

Identify the single orchestrator in an undirected server graph where every connection includes that orchestrator and workers never connect directly to...

Coding & Algorithms
1
0
27 people solved
Aug 9, 2026
Axon logo
Axon
Medium
Software Engineer

Explain What Motivates and Demotivates You at Work

Prompt Describe the conditions that consistently motivate you at work and the conditions that can reduce your motivation. Use one concrete example of ...

Behavioral & Leadership
4
0
39 people solved
Mar 29, 2026
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Compute days until plants stop dying

You are given a row of plants, each with an integer pesticide level. Rules - On each day, any plant with a strictly greater pesticide level than the p...

Coding & AlgorithmsStacks & Queues
23
0
416 people solved
Mar 1, 2026
Google logo
Google
Medium
Software EngineerIntern Locked

Design a logger that returns top-K messages

This question evaluates skills in designing in-memory data structures and algorithms for frequency counting and interval querying, including extractin...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
20
0
204 people solved
Jan 6, 2026
Databricks logo
Databricks
Hard
Software Engineer

Design concurrent range-aware file caching client

Design concurrent range-aware file caching client System Design: High-throughput Client-side Ranged-read File Cache You are asked to design and specif...

System DesignCachingConcurrency
45
0
751 people solved
Aug 9, 2025
Coreweave logo
Coreweave
Medium
Site Reliability Engineer Locked

Design Batch Reboots for Machines

This question evaluates a candidate's competency in designing reliable, capacity-aware operational systems for large-scale machine management, includi...

System DesignJob Scheduling & WorkflowsFault Tolerance & Failover
50
0
396 people solved
Feb 13, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Merge Overlapping Closed Intervals

Implement merge_intervals(intervals) for closed intervals. Work through the function contract, boundary cases, correctness argument, and time and spac...

Coding & Algorithms
3
0
24 people solved
Aug 9, 2026
ZipHQ logo
ZipHQ
Hard
Software Engineer

Find shortest path on infinite grid

You are given an infinite 2D grid with integer coordinates. From a cell (x, y) you may move in 4 directions (North/South/East/West) by 1 cell per move...

Coding & AlgorithmsGraphs
64
0
515 people solved
Mar 11, 2026
Meta logo
Meta
Hard
Machine Learning Engineer Locked

Find A Low-Quality Annotator From Label Data

Practice a pandas-style data analysis prompt for identifying a low-quality annotator from label data. The question emphasizes cleaning, agreement or g...

Data Manipulation (SQL/Python)Annotation & Label QualityPandas & Python Data
6
0
82 people solved
Jun 2, 2026
Capital One logo
Capital One
Medium
Software Engineer

Solve four algorithmic coding tasks

You are given four independent coding tasks. They may be solved in any order, and partial test-case credit is awarded for each task. The tasks are rou...

Coding & AlgorithmsTreesSimulation & State Machines
103
0
701 people solved
Sep 6, 2025
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Payment Processor with Holds, Charges, and Network Batches

Design a payment processor with two separate operations. A merchant first requests a hold, which the processor forwards to an upstream payment network...

System DesignPayments & LedgersDistributed Transactions & Idempotency
0
0
8 people solved
Aug 1, 2026
Google logo
Google
Hard
Software EngineerNew Grad Locked

Compute Turnstile Crossing Times

This question evaluates proficiency in queue simulation, event-driven scheduling, and handling priority and tie-breaking rules while achieving linear ...

Coding & AlgorithmsSimulation & State MachinesStacks & Queues
9
1
102 people solved
May 4, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Build a Banking System with Activity Rankings

Implement an in-memory banking system with account creation, deposits, transfers, and activity rankings. Correctly update balances and per-account act...

Coding & Algorithms
9
0
96 people solved
Jul 4, 2026
Netflix logo
Netflix
Medium
Software Engineer

Implement ordering and undo executor

The interview included two coding tasks: 1. Dependency ordering: Given a set of tasks and their dependency relationships, return a valid execution ord...

Coding & AlgorithmsGraphsStacks & Queues
21
0
160 people solved
Apr 15, 2026
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