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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Amazon logo
AmazonGoogleMicrosoft

Also asked at Microsoft, WeRide, Meta

Medium
Software Engineer

Find a Same-Letter Loop in a Grid

Problem Given a rectangular lowercase-character grid, decide whether four-directional moves can form a cycle of at least four cells, all carrying the ...

Coding & AlgorithmsGrids & MatricesGraphs
1
0
11 people solved
Meta logo
Meta
Hard
Software Engineer Locked

Design Boolean Search for Status Posts

Design a Boolean search service for active status posts with AND/OR expressions, precedence, parentheses, and stable pagination. Cover parsing, normal...

System Design
3
0
36 people solved
Aug 3, 2026
Google logo
GoogleMicrosoftUber

Also asked at Uber, Meta, Bloomberg, TikTok, Roku

Hard
Software Engineer

Decide Whether Four Cards Can Form Twenty-Four

Problem Use all four cards exactly once in a parenthesized expression with binary +, -, *, /. Division is real division. Unary minus and concatenating...

Coding & AlgorithmsBacktracking & Recursion
1
0
11 people solved
Nuro logo
Nuro
Hard
Software EngineerIntern

Coordinate Video Reading and Rendering at 25 Frames per Second

You are given a Frame type and a VideoPlayer with two operations: Read() returns the next frame or an end-of-video indication, and Render(frame) displ...

Software Engineering FundamentalsConcurrency
4
0
51 people solved
Feb 15, 2026
Interactive Brokers logo
Interactive Brokers
Medium
Software Engineer Locked

Calculate Tax Under Progressive Income Brackets

Calculate income tax under progressive brackets by applying each rate only to the portion of income inside that bracket. Handle zero income, exact bou...

Coding & Algorithms
2
0
34 people solved
Aug 18, 2026
Apple logo
Apple
Hard
Data Engineer

Encode and Rebuild a Binary Tree

Design two functions for a binary tree: - encode(root) -> string - decode(data) -> root Each tree node contains an integer value and has up to two chi...

Coding & AlgorithmsTrees
19
0
153 people solved
Apr 2, 2026
Airbnb logo
Airbnb
Medium
Software Engineer

Explain why you want to join Airbnb

"Why Airbnb?" — Culture / Values Round (Software Engineer) You are in the culture round of an Airbnb Software Engineer loop. The interviewer asks you ...

Behavioral & LeadershipMotivation & Fit
44
0
466 people solved
Sep 6, 2025
Snowflake logo
SnowflakeMetaGoogleAmazon

Also asked at Google, Amazon

Medium
Software Engineer

Count Tree Nodes Matching Their Rounded-Down Subtree Average

Problem For each node in the binary tree rooted at root, take the average of all values in its subtree, including the node itself, and round down. Ret...

Coding & AlgorithmsTreesDynamic Programming
0
0
13 people solved
Optiver logo
Optiver
Medium
Software Engineer

Design a queue and analyze tradeoffs

Design a FIFO queue data structure that supports enqueue, dequeue, peek, and isEmpty. Compare implementations using a singly linked list, a dynamic ar...

Coding & AlgorithmsData Structure Design
63
0
523 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Design a pizza ordering system

Design the core object-oriented model for a pizza ordering system used by a small restaurant. The system should allow customers to: - browse a menu of...

Software Engineering FundamentalsLow-Level Design (OOP)
20
1
324 people solved
Oct 24, 2025
Amazon logo
AmazonBloombergGoogle

Also asked at Google, Meta, Microsoft

Easy
Software Engineer

Return the Multiset of Characters Present in Every Word

Problem Return an array of one-character strings for all characters common to every word in words, including repeated occurrences. A character appears...

Coding & AlgorithmsArrays & Strings
1
0
12 people solved
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Prevent Vanishing Gradients in Deep Networks

Explain why gradients vanish in deep networks and how activation choice, initialization, residual connections, and normalization affect training. Dist...

Machine LearningNeural Networks & TrainingML Fundamentals
23
0
180 people solved
Jul 3, 2026
Jane Street logo
Jane Street
Hard
Machine Learning Engineer

Implement compiler for custom language

Implement compiler for custom language Design and implement a simple compiler/interpreter Goal Design and implement a small compiler/interpreter for a...

System DesignParsing & InterpretersLow-Level Design (OOP)
77
0
645 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Security EngineerSenior+

Design a Real-Time Collaborative Coding Interview Pad, Then Threat-Model It

Design a browser-based collaborative coding pad of the kind hiring teams use for live technical interviews, and then threat-model the system you desig...

System DesignApplication SecurityReal-Time Systems
1
0
23 people solved
Mar 24, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Design an Employee Coverage Timeline

Use a grouped sweep line and per-ID reference counts to build employee coverage segments while preserving consistent IDs and names across overlapping ...

Software Engineering Fundamentals
3
0
35 people solved
Jun 7, 2026
Airwallex logo
Airwallex
Medium
Data Scientist Locked

Rank Campaigns by KYC Submission Rate

Rank marketing campaigns by KYC submission rate in PostgreSQL. Practice three-table joins, conditional distinct aggregation, numeric rates, and dense ...

Data Manipulation (SQL/Python)
9
0
87 people solved
Aug 11, 2026
Databricks logo
Databricks
Easy
Data ScientistIntern Locked

Relate coefficients under linear feature transformation

This question evaluates understanding of linear regression parameter relationships under linear feature transformations, model equivalence and identif...

Statistics & Math
11
0
100 people solved
Dec 11, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Compute courier pay and implement load balancing

Problem 1: Compute courier (delivery driver) pay You are given a sequence of delivery-related events for a courier during a day. Your task is to compu...

Coding & AlgorithmsPartitioning & Consistent HashingData Structure Design
141
2
1093 people solved
Dec 16, 2025
Rippling logo
Rippling
Hard
Software Engineer Locked

Design a Hotel Booking System

This question evaluates system design and backend architecture competencies, including data modeling, transactional integrity, concurrency control, sc...

System DesignSystem Design FundamentalsTransactions & Isolation
46
0
440 people solved
Feb 1, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Implement and analyze custom attention

Implement Scaled Dot-Product Attention in PyTorch (from scratch) Context You will implement a numerically stable, vectorized scaled dot-product attent...

Machine LearningTransformers & AttentionML Coding
67
0
674 people solved
Sep 6, 2025
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