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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
Posthog logo
Posthog
Medium
Software Engineer

Design Product Analytics and Event Capture for a Small E-Commerce Store

How would you implement analytics for a small, independently owned e-commerce site? Assume the owner is the main consumer of the results and wants to ...

System DesignSystem Design FundamentalsData Ingestion & CDC
0
0
10 people solved
Sep 12, 2026
Netflix logo
Netflix
Medium
Software EngineerSenior+

Model Direct-Sold DSP Orders

Design a data model for tracking a direct-sold demand order in a demand-side advertising platform. Context: - The platform manages advertiser demand a...

Software Engineering FundamentalsAds SystemsSystem Design Fundamentals
40
0
307 people solved
Apr 3, 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
941 people solved
Dec 9, 2025
Citadel logo
Citadel
Medium
Software Engineer Locked

Perform an External Merge Sort with a Heap

Implement external merge sort by splitting integers into memory-bounded sorted runs and merging them with a deterministic min-heap. Preserve duplicate...

Coding & AlgorithmsSortingHeaps & Priority Queues
17
0
149 people solved
Jul 12, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Maximum Subarray Sum with a Length Cap

Compute the maximum sum of a nonempty contiguous subarray whose length cannot exceed a given cap. The prompt fixes negative-only behavior, integer-wid...

Coding & Algorithms
6
0
66 people solved
Sep 5, 2026
Apple logo
Apple
Easy
Software EngineerSenior+

Parse and Summarize HTTP Access Logs

Parse and Summarize HTTP Access Logs Given a list of raw access-log strings, parse valid records and report the number of total requests, client error...

Software Engineering Fundamentals
11
0
103 people solved
May 3, 2026
Disney logo
Disney
Medium
Software EngineerSenior+ Locked

Design a Flash Sale with a Virtual Queue and Exact Inventory

Design a flash-sale system with a virtual queue, controlled admission, exact inventory reservation, and idempotent checkout so every success represent...

System Design
8
0
64 people solved
Aug 7, 2026
Robinhood logo
Robinhood
Medium
Software Engineer

Count Referral Descendants

You are building a referral analytics feature. Each referral relationship is represented as a directed pair (referrer, referredUser), meaning referrer...

Coding & AlgorithmsTreesSystem Design Fundamentals
28
0
244 people solved
Feb 26, 2026
Amazon logo
Amazon
Medium
Software Engineer

A Problem That Needed Deep Analysis: Knowing You Focused on the Right Things

Tell me about a problem you had to solve that required in-depth thought and analysis. How did you know you were focusing on the right things, and what...

Behavioral & LeadershipAmbiguity & Decision MakingProject Deep Dive
0
0
9 people solved
Sep 10, 2026
Decagon logo
Decagon
Medium
Software Engineer Locked

Count Complete Tic-Tac-Toe Game Sequences

Count every legal Tic-Tac-Toe move sequence that completes a game from a reachable board and specified next player. Treat different move orders as dis...

Coding & Algorithms
14
0
107 people solved
Jul 10, 2026
Nclusion logo
Nclusion
Medium
Frontend Engineer

Design Consistent List and Category APIs

Design a generic application that presents lists of items organized by category. Define its data model and API so every attribute used by the UI has a...

System DesignAPI DesignState Management
0
0
8 people solved
Sep 15, 2026
Sig logo
Sig
Easy
Data Scientist

Count Grid Paths with No Three Equal Moves

Count Grid Paths with No Three Equal Moves A frog moves from (0, 0) to (5, 5). Every step is either one unit right or one unit up. The frog refuses to...

Statistics & Math
4
0
31 people solved
Aug 16, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Simulate Alternating Stick Collection for a Nest

This Hudson River Trading coding question evaluates simulation logic, turn alternation, and state updates across a sequence of collection decisions. I...

Coding & Algorithms
7
1
93 people solved
Jul 2, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer Locked

Evaluate Noisy Data for LLM Post-Training

This question evaluates competency in post-training data curation and experimental judgment for large language models, including assessing noisy datas...

Machine LearningFine-Tuning & Alignment TechniquesAnnotation & Label Quality
29
0
299 people solved
May 31, 2026
Optiver logo
Optiver
Hard
Software EngineerNew Grad

Cargo Order Allocation Across Departing Planes

A freight company assigns incoming shipping orders to a fixed fleet of cargo planes. You must implement the order-processing logic: decide whether eac...

Coding & AlgorithmsTreesIntervals & Scheduling
24
0
243 people solved
Nov 16, 2025
Snapchat logo
Snapchat
Hard
Machine Learning Engineer

Explain Embeddings, Positive Labels, and Retraining in a Recommendation Project

Explain Embeddings, Positive Labels, and Retraining in a Recommendation Project Discuss a content-recommendation project you worked on. Explain the pa...

Machine LearningRecommendation SystemsAnnotation & Label Quality
0
0
10 people solved
Sep 12, 2026
Tubi logo
Tubi
Medium
Machine Learning Engineer AI

ML System Design: Movie Recommendation Model and Pipeline (AI-Assisted Round)

ML System Design: Movie Recommendation Model and Pipeline (AI-Assisted Round) This is a hands-on, AI-assisted coding round: you are allowed to use AI ...

ML System Design
11
0
121 people solved
Feb 10, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Count Machines and Recover a Distributed Tree Topology

Design a distributed tree protocol that counts machines and reconstructs all nodes and edges without a central inventory. Specify correlation-bound ag...

Software Engineering FundamentalsDistributed Transactions & IdempotencyFault Tolerance & Failover
39
0
455 people solved
Jul 3, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Design a Prompt Sharing Product

Design a prompt-sharing product with private and public flows, stable versions, permissions, attribution, remixing, revocation, and safe execution. Pr...

System DesignSystem Design Fundamentals
46
0
313 people solved
Jul 8, 2026
NVIDIA logo
NVIDIA
Medium
Software EngineerSenior+ Locked

Design an Autonomous-Vehicle Perception Pipeline

Design an onboard camera-perception pipeline with synchronized capture, calibrated inference, multi-camera fusion, bounded latency, and safe degradati...

System Design
4
0
58 people solved
Aug 19, 2026
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