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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
Harvey logo
Harvey
Medium
Software Engineer

Defend a Project Decision and Its Trade-offs

Choose an important technical decision from a project you worked on and defend the trade-off you made. Explain the alternatives, what evidence you use...

Behavioral & LeadershipAmbiguity & Decision MakingSystem Design Fundamentals
1
0
17 people solved
Sep 1, 2026
AMD logo
AMD
Medium
Software Engineer

Explain Cache Conflicts and Related Memory-Access Problems

Explain a cache-line conflict using an address-level example, then distinguish it from false sharing and GPU shared-memory bank conflicts. Constraints...

Software Engineering FundamentalsMemory ManagementConcurrency
0
0
14 people solved
Sep 14, 2026
Sig logo
Sig
Easy
Data Scientist

Find the Expected Number of Consecutive Chosen Pairs

Find the Expected Number of Consecutive Chosen Pairs Choose 6 distinct numbers uniformly from the integers 1 through 35. A consecutive pair is an adja...

Statistics & Math
1
0
18 people solved
Aug 16, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Design an Asynchronous Video Moderation Pipeline with ML Risk Scores and a Rules Engine

Design a simplified video content moderation system. Video upload is out of scope: assume an existing system delivers each newly published, already-up...

System DesignSystem Design FundamentalsFault Tolerance & Failover
1
0
12 people solved
Sep 6, 2026
Scale AI logo
Scale AI
Medium
Software Engineer Locked

Debug a Project Assignment Codebase

This question evaluates debugging, state management, test-driven troubleshooting, data filtering correctness, and the ability to maintain a public API...

Software Engineering FundamentalsDebugging
48
0
355 people solved
Jan 4, 2026
Falconx logo
Falconx
Medium
Software Engineer

Longest Single-Venue Execution Window Within Price-Range and Slippage Limits

You are building an audit module for a high-frequency trading platform. It receives trade-execution logs from several exchanges (venues) as an asynchr...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
1
0
9 people solved
Sep 6, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Design a Monitoring Dashboard with Explicit Latency Goals

Design a monitoring dashboard that displays incoming measurements with attention to latency. Explain both how quickly new measurements become visible ...

System DesignObservabilityBatch & Stream Processing
2
0
18 people solved
Sep 15, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Reason About Dependency Loading with Topological Sort

Explain dependency loading with graph construction, topological sorting, cycle detection, and explicit handling of multiple valid load orders.

Software Engineering Fundamentals
7
0
62 people solved
Aug 16, 2026
Airwallex logo
Airwallex
Medium
Software EngineerSenior+ Locked

Design a Large-File Analysis Report System

Design an authenticated large-file upload and analysis service with resumable storage, idempotent async jobs, versioned reports, and tenant isolation.

System Design
3
0
65 people solved
Sep 2, 2026
Siemens logo
Siemens
Medium
Machine Learning EngineerSenior+

Compare GRPO and PPO and Explain Sparse Versus Dense Rewards

Compare Group Relative Policy Optimization (GRPO) with PPO for language-model post-training. Explain GRPO's advantages and limitations, and assess whe...

Machine LearningReinforcement LearningFine-Tuning & Alignment Techniques
1
1
18 people solved
Sep 4, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Design a Real-Time Nearby-Driver Service

Design a real-time service that finds available drivers near a passenger as locations update every few seconds. Cover spatial partitioning, cell bound...

System DesignGeo & Delivery SystemsPartitioning & Consistent Hashing
28
0
191 people solved
Aug 16, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Implement a Recipe Cart

This question evaluates the ability to design and implement stateful data structures and aggregation logic for tracking ingredient counts, applying ti...

Coding & AlgorithmsData Structure DesignStacks & Queues
22
0
169 people solved
May 20, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Mine Novel Images from Unlabeled Data

Design a machine learning system that mines novel or interesting images from a massive, unlabeled image corpus. The corpus is far too large for exhaus...

ML System DesignUnsupervised LearningAnnotation & Label Quality
27
0
410 people solved
Apr 3, 2026
Luma logo
Luma
Medium
Software Engineer

Build a System to Manage Prompts and Model Behavior in Production

This prompt is one of five offered in a take-home for a software engineering role on an AI product team. The candidate picks one prompt; across the se...

ML System DesignSystem Design FundamentalsLLM Evaluation
1
0
7 people solved
Sep 17, 2026
Google logo
Google
Medium
Software Engineer Locked

Approach a Forced-Choice Work-Style Assessment Consistently

Approach a forced-choice work-style assessment through truthful, stable evidence rather than a manufactured ideal profile. The discussion explains rel...

Behavioral & Leadership
1
0
34 people solved
Aug 16, 2026
Visa logo
Visa
Medium
Software EngineerSenior+ Locked

Count Connected Groups in a Relationship Matrix

Count the transitive connected groups represented by a symmetric relationship matrix. Candidates should explain graph traversal or union techniques, v...

Coding & Algorithms
3
0
62 people solved
Aug 3, 2026
Amazon logo
Amazon
Medium
Software Engineer

Influence a Colleague Who Prefers a Different Approach

Describe a time you influenced a colleague who preferred a different approach to a shared goal. Constraints & Assumptions Use a real example and disti...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration
0
0
11 people solved
Sep 14, 2026
A
Addepar
Medium
Software Engineer

Design a Multi-Region Event Ticketing System

Design a Multi-Region Event Ticketing System Design an event ticketing system where users can view and search events and book seats. An event occurs a...

System Design
2
0
15 people solved
Aug 20, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Design a High-Demand Event Ticket Marketplace

Design a ticket marketplace that handles search, expiring holds, payment uncertainty, and extreme onsale spikes without overselling inventory. Reason ...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
18
0
192 people solved
Jul 8, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer

Design Candidate Search And LLM Evaluation Tasks

Prepare for an MLE onsite with three themes: finding top candidates from a job description, reasoning about an unreliable deterministic comparator, an...

ML System DesignRetrieval & Candidate GenerationRanking Models
26
0
237 people solved
Apr 21, 2026
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