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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
Medium
Software Engineer Locked

Determine Whether a Word Exists in a Graph

This question evaluates proficiency in graph algorithms and backtracking techniques, including traversal strategies, cycle avoidance, and state manage...

Coding & Algorithms
14
2
102 people solved
May 2, 2026
Apple logo
Apple
Medium
Software Engineer

Project Deep Dive: End-to-End Walkthrough, Trade-offs and Communicating Decisions

This behavioral round focuses on your actual work rather than generic situational questions. Pick a project you know thoroughly and walk the interview...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
0
0
4 people solved
Aug 31, 2026
ByteDance logo
ByteDance
Easy
Software Engineer Locked

Prepare for an SRE Systems Fundamentals Round

Prepare for a Bytedance software engineering interview question about prepare for an sre systems fundamentals round. The prompt highlights practical r...

Software Engineering Fundamentals
1
0
29 people solved
Jun 13, 2026
Otter.Ai logo
Otter.Ai
Easy
Software Engineer Locked

Extend a Key-Value Store with Commits and Explicit Rollover Semantics

Design key-value operations and versioned commits while clarifying rollover behavior, snapshot isolation, deletion history, and storage tradeoffs.

System DesignKey-Value StoresData Structure Design
2
0
16 people solved
Aug 29, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Design and Release a Consistent Dark-Store Inventory System

Design a consistent dark-store inventory system with relational transactions, reservations, retries, reconciliation, CI/CD, and safe Kubernetes rollou...

System DesignTransactions & IsolationCI/CD & Deployment
3
0
25 people solved
Aug 28, 2026
Uber logo
Uber
Medium
Data Scientist

How to evaluate lowering ETA?

Uber wants to estimate the business value of reducing ETA, where ETA is the predicted time from when a rider requests a trip until the driver arrives ...

Analytics & ExperimentationMetrics & KPIsCausal Inference
20
0
137 people solved
Feb 1, 2026
Expedia logo
Expedia
Hard
Software Engineer

Solve three interview coding problems

This interview report described three coding tasks: 1. Generate a run-length spoken sequence Start with s1 = "1". To build the next term, read the ...

Coding & AlgorithmsArrays & StringsBacktracking & Recursion
9
0
127 people solved
Jan 6, 2026
Upstart logo
Upstart
Easy
Software Engineer Locked

Compute a Point Set's Bounding Rectangle

Compute the smallest axis-aligned bounding rectangle for a nonempty set of two-dimensional integer points. Track minimum and maximum coordinates in on...

Coding & Algorithms
3
0
40 people solved
Jul 5, 2026
Imc logo
Imc
Medium
Software Engineer Locked

Answer conceptual true/false and caching questions

This question evaluates understanding of integer representation, caching eviction policies and trade-offs (LFU vs LRU) including communication of anal...

Software Engineering FundamentalsCachingBinary Search
34
0
405 people solved
Jan 20, 2026
ByteDance logo
ByteDance
Medium
Software EngineerIntern

Sort Every Concentric Matrix Border Clockwise

Problem For each concentric border of a rectangular integer matrix, sort that border's values in ascending order and write them back clockwise startin...

Coding & Algorithms
3
0
37 people solved
Apr 20, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Design an in-memory database with TTL and backups

You are asked to implement a small in-memory “database” that evolves across 4 parts. In each part you may reuse your previous code and only add/extend...

Coding & AlgorithmsData Structure Design
46
0
418 people solved
Nov 8, 2025
Google logo
Google
Medium
Software Engineer

Check if all substrings are anagrams of words

You are given a string s (letters only) and access to an English dictionary dict (a set of valid words). Return true if every contiguous substring of ...

Coding & AlgorithmsArrays & Strings
67
0
638 people solved
Mar 11, 2026
Runway logo
Runway
Hard
Machine Learning Engineer

Implement n-gram model and select n

Implement n-gram model and select n Task: Implement an n-gram Language Model with Training, Sampling, and Model Selection Guidance Objective Implement...

Machine LearningNatural Language ProcessingML Coding
33
0
431 people solved
Aug 8, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Fix a Round-Robin Load Balancer, Then Implement Consistent Hashing

In a debugging-format onsite round, you work on the component that decides which backend server handles each incoming request. The round has two piece...

Software Engineering FundamentalsPartitioning & Consistent HashingConcurrency
2
0
18 people solved
Jan 18, 2026
Optiver logo
Optiver
Medium
Quantitative Trader

Answer English HR classics

Answer English HR classics Behavioral Interview: Data Scientist (Technical Screen) Context: You are interviewing for a Data Scientist role at Optiver ...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
15
0
191 people solved
Aug 7, 2025
Cerebras logo
Cerebras
Hard
Software Engineer

Design a Multi-Channel Message Queue

Design a Message Queue with Multi-Channel Messages and Channel-Based Subscriptions Context You are asked to design a message-queue data structure wher...

System DesignMessaging & Event-DrivenData Structure Design
18
0
162 people solved
Sep 6, 2025
eBay logo
eBay
Medium
Software Engineer Locked

Design a Streaming Top-Ten Sales Dashboard

Design a streaming dashboard for the top ten items and categories by units sold, including partitioned aggregation, global merging, duplicate correcti...

System Design
1
0
25 people solved
Aug 5, 2026
Waymo logo
Waymo
Hard
Software Engineer

Find a Repeating Vehicle Program Under Fuel and Memory Limits

Find a short program for a vehicle on a grid. The vehicle starts at a specified interior cell with 100 fuel units. It can move up, down, left, or righ...

Coding & AlgorithmsSimulation & State MachinesBacktracking & Recursion
3
0
30 people solved
Jun 27, 2026
Otter.Ai logo
Otter.Ai
Medium
Software EngineerSenior+

Design a Google Docs-Style Real-Time Collaborative Editing Backend

Design the backend of a collaborative document editor like Google Docs. Several users can open the same document at once and edit it in real time. Eac...

System DesignReal-Time SystemsConsistency & Availability
0
0
7 people solved
Aug 4, 2026
Voleon logo
Voleon
Medium
Software Engineer

Design circular sliding-window ratio tracker

You are given a circular binary array A of length n (A[i] ∈ {0,1}) and a fixed window size w (1 ≤ w ≤ n). Define r (i) as the fraction of 1s within th...

Coding & AlgorithmsData Structure DesignTwo Pointers & Sliding Window
27
0
374 people solved
Sep 6, 2025
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