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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
Google logo
Google
Hard
Data Scientist Locked

Evaluate AI Workflow Product Metrics

This question evaluates product analytics and experimentation skills—specifically metric definition, funnel construction, segmentation, instrumentatio...

Analytics & ExperimentationMetric DiagnosticsUser Behavior & Funnels
60
0
569 people solved
May 18, 2026
Tesla logo
Tesla
Medium
Data Engineer Locked

Build a Transaction CSV Cleaning Pipeline

This question evaluates skills in data engineering and software engineering fundamentals, focusing on designing deterministic, auditable batch ETL/cle...

Software Engineering FundamentalsData Cleaning & WranglingData Quality & Validation
38
0
373 people solved
May 4, 2026
Apple logo
Apple
Hard
Machine Learning EngineerSenior+ Locked

Walk Through an Agentic PDF Evaluation Codebase

Prepare for a Apple software engineering interview question about walk through an agentic pdf evaluation codebase. The prompt highlights practical rea...

Software Engineering FundamentalsAI AgentsRetrieval-Augmented Generation
28
0
273 people solved
Jul 1, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Count Occurrences of Each Suffix Maximum

Preprocess an integer array from right to left so each suffix query returns how many times that suffix's maximum value occurs, including repeated quer...

Coding & Algorithms
9
0
85 people solved
Aug 15, 2026
Intuit logo
Intuit
Medium
Software EngineerSenior+ Locked

Increment a Digit-Array Integer by One

This question evaluates a candidate's ability to manipulate arrays and manage carry propagation in a digit-by-digit arithmetic simulation. It is a cla...

Coding & Algorithms
3
0
39 people solved
Jun 30, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Implement Persistent Memoization LRU Cache

This question evaluates knowledge of memoization, LRU cache semantics, deterministic cache-key construction from positional and keyword arguments, JSO...

Coding & AlgorithmsData Structure DesignParsing & Interpreters
12
1
136 people solved
May 23, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Find max-score path in weighted DAG

You are given a directed acyclic graph (DAG). Each node v has a score w(v). Each directed edge (u→v) has a nonnegative time cost t(u,v). There is a un...

Coding & AlgorithmsGraphsDynamic Programming
42
1
377 people solved
Sep 6, 2025
Waymo logo
Waymo
Easy
Data Scientist

Determine earliest collision among moving cars

You are given n cars moving over time. Each car has known initial state at time \(t=0\): - 1D case (straight road): - initial position \(x_i\) (mete...

Coding & AlgorithmsMath & Number Theory
48
0
365 people solved
Jan 17, 2026
Ramp logo
Ramp
Medium
Software Engineer

Multi-Level Warehouse Storage with Weighted Retrieval

Multi-Level Warehouse Storage with Weighted Retrieval You are building the in-memory engine for an automated warehouse. The warehouse is a stack of ho...

Coding & Algorithms
9
0
81 people solved
Feb 11, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Rebalance shard ranges under overlap limit

This question evaluates skills in interval and range management, constraint enforcement, and algorithmic problem solving related to overlapping intege...

Coding & AlgorithmsIntervals & Scheduling
48
0
346 people solved
Mar 1, 2026
Chime logo
Chime
Hard
Software Engineer

Design mobile check deposit system

System Design: Mobile Check Deposit for a Consumer Banking App Design a production-grade Remote Deposit Capture (RDC) feature that lets retail custome...

System DesignPayments & LedgersDistributed Transactions & Idempotency
118
0
1051 people solved
Jul 27, 2025
Databricks logo
Databricks
Medium
Software Engineer Locked

Partition a Target String by Source Substrings

This question evaluates understanding of string algorithms and optimal partitioning, specifically substring matching and minimizing the number of cont...

Coding & Algorithms
15
0
124 people solved
May 14, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Implement agent voting with average and sorting

Design an in-memory “agent voting” module that records ratings agents give to items (e.g., tickets/articles). Requirements: - Each vote is: (agentId, ...

Coding & Algorithms
8
0
142 people solved
Jan 5, 2026
Roblox logo
Roblox
Medium
Software Engineer Locked

Implement a Rolling-Window Rate Limiter

Implement a single-process rolling-window rate limiter where only accepted requests consume capacity. Define exact boundary behavior, expire old times...

Software Engineering FundamentalsData Structure DesignRate Limiting
79
2
566 people solved
Jul 13, 2026
Stripe logo
Stripe
Medium
Machine Learning EngineerSenior+

Design payment fraud detection

Design a machine learning system for fraud detection in an online payment platform. The system should score transactions before or shortly after autho...

ML System DesignFeature EngineeringSupervised Learning
17
0
218 people solved
Apr 18, 2026
Capital One logo
Capital One
Medium
Software Engineer Locked

Count Pairs of Cyclically Equivalent Integers

Count unordered index pairs whose non-negative integers have decimal strings equivalent under cyclic rotation. The algorithm challenge emphasizes a pr...

Coding & AlgorithmsArrays & Strings
12
0
178 people solved
Jul 21, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Discuss Collaboration, Feedback, and Conflict

Prepare three real examples that demonstrate collaboration, response to feedback, and constructive conflict. For each, clarify the shared goal, your c...

Behavioral & Leadership
4
0
60 people solved
Jun 24, 2026
Cognitiv logo
Cognitiv
Hard
Software Engineer Locked

Reason About Duplicate Data and Scaling in Spark

Explain how to define and remove duplicate data in Spark, then scale the pipeline as volume and traffic increase. Candidates must translate business i...

Software Engineering Fundamentals
3
0
38 people solved
Jul 28, 2026
P
Persistence
Medium
Software Engineer Locked

Reason About Indexes, Kafka, and Database Locking

Reason through practical database indexes, Kafka consumption, and transaction locking using concrete order and inventory workloads. The interview test...

Software Engineering Fundamentals
3
0
31 people solved
Jul 26, 2026
Vercel logo
Vercel
Medium
Software Engineer

Design hit counter for last 5 minutes

You are launching a new webpage and need a last-minute server-side metric to track popularity in real time. Implement a hit counter that supports the ...

Coding & AlgorithmsData Structure DesignStacks & Queues
28
0
195 people solved
Jan 1, 2026
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