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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."

Blind 75Free
Showing 20 results
Google logo
Google
Medium
Software Engineer Locked

Solve Flower Placement and Directory Deletion

This question evaluates combinatorial constraint-satisfaction and permutation/matching skills for the flower-placement grid alongside filesystem trave...

Coding & AlgorithmsGrids & MatricesBacktracking & Recursion
8
0
115 people solved
May 8, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Can board states be transformed?

This question evaluates reasoning about constrained piece movement, string transformation, and invariant-based correctness in the Coding & Algorithms ...

Coding & AlgorithmsTwo Pointers & Sliding Window
15
1
232 people solved
Apr 1, 2026
Google logo
Google
Medium
Software Engineer Locked

Find the Longest Path of Equal-Valued Tree Nodes

Find the longest path of equal-valued nodes in a binary tree encoded as a breadth-first list. Clarify the ambiguity with strict BST terminology, then ...

Coding & Algorithms
7
0
69 people solved
Jun 11, 2026
Lyft logo
Lyft
Medium
Software Engineer

Design a Distributed Web Crawler

Question Design a distributed web crawler. Starting from one or more seed URLs, it fetches the pages it is permitted to fetch, stores a snapshot and m...

System Design
14
0
116 people solved
May 1, 2026
Stripe logo
Stripe
Medium
Software Engineer

Implement tiered shipping calculator

Implement tiered shipping calculator Implement in JavaScript a shipping-cost calculator with three progressively richer pricing models based on a conf...

Coding & Algorithms
19
0
176 people solved
Jul 17, 2025
Netflix logo
Netflix
Hard
Software EngineerSenior+

Design Publisher Configuration Rules

Design a supply-side advertising configuration system that manages publisher-specific rules. A publisher may own many websites, mobile apps, channels,...

System DesignAds SystemsSystem Design Fundamentals
22
1
166 people solved
Apr 5, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Rank Newly Launched Ads Under Cold Start

Design a cold-start ranker for ads launched within the last seven days. Combine creative, campaign, advertiser, context, and uncertainty signals with ...

ML System DesignCTR Prediction & Ads MLRanking Models
16
0
117 people solved
Jul 2, 2026
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Explain Why You Are Changing Roles

Craft a credible, respectful reason for changing roles that links proven experience with specific growth and ownership goals.

Behavioral & Leadership
2
0
26 people solved
Sep 1, 2026
ByteDance logo
ByteDance
Medium
Site Reliability Engineer

Implement Sorted Search and Array Updates

Implement the following independent array functions. Part 1: Search a sorted array Given a sorted array of integers nums in nondecreasing order and an...

Coding & Algorithms
4
0
71 people solved
Apr 28, 2026
Figma logo
Figma
Medium
Software Engineer

Design Real-Time Collaborative Comments

Design a real-time commenting system for a collaborative canvas or document. Users should see new comments quickly, receive updates on threads, and re...

System DesignReal-Time SystemsAPI Design
15
0
170 people solved
Apr 9, 2026
Google logo
Google
Medium
Software Engineer Locked

Solve Rooms and Top-K Streams

This question evaluates algorithmic problem-solving skills across interval scheduling/resource allocation and streaming top-k maintenance, testing com...

Coding & Algorithms
11
0
104 people solved
Jun 5, 2026
Yelp logo
Yelp
Easy
Data Scientist Locked

Return Integers in Descending Ranked Order

Return every integer in descending ranked order while preserving duplicates. This final coding follow-up builds on earlier maximum-of-two and maximum-...

Coding & Algorithms
7
0
54 people solved
Aug 27, 2026
Harvey logo
Harvey
Medium
Software Engineer Locked

Implement a Database Connection Pool

This question evaluates skills in concurrent resource management, synchronization primitives, and robust connection lifecycle handling within database...

Coding & AlgorithmsConcurrency
32
1
291 people solved
Feb 25, 2026
OpenAI logo
OpenAI
Medium
Backend Engineer

Design a Real-Time Chess Service

Design an online chess service that supports real-time, two-player games. Users should be able to create or join a game, make legal moves, and see the...

System DesignReal-Time SystemsFault Tolerance & Failover
29
0
325 people solved
Apr 22, 2026
Headway logo
Headway
Medium
Software EngineerSenior+ Locked

Design a Rental Search and Booking Platform from Startup to Scale

Design a short-term rental search and booking platform that can evolve from a startup architecture to large-scale traffic. Balance fast, possibly stal...

System Design
14
0
101 people solved
Jun 15, 2026
Google logo
Google
Medium
Software EngineerNew Grad Locked

Find the Most Frequent IP Addresses in a File Too Large for Memory

Design an exact, bounded-memory method for finding the most frequent IP addresses in a file far larger than RAM. Analyze memory and disk-I/O trade-off...

Software Engineering FundamentalsSorting
11
0
90 people solved
Jun 17, 2026
Waymo logo
Waymo
Hard
Software Engineer

Count Squares Formed by Segments

Count Squares Formed by Segments You are given axis-aligned line segments with integer coordinates. Each segment is represented by two endpoints. One ...

Coding & Algorithms
5
0
87 people solved
May 5, 2026
Rippling logo
Rippling
Medium
Software Engineer

Design expense rules engine and return type

Design a Rules Engine for Corporate Card Expenses Context We offer a corporate credit card that employees use for business expenses. Managers set poli...

System DesignLow-Level Design (OOP)API Design
202
0
1882 people solved
Aug 7, 2025
Optiver logo
Optiver
Medium
Software Engineer

Implement price-based order matcher

Design and implement a price-based order matcher for unit-sized orders. You are given an array orders where each element is [type, price]: type = 1 de...

Coding & AlgorithmsHeaps & Priority Queues
63
0
628 people solved
Aug 13, 2025
Stripe logo
Stripe
Hard
Software EngineerSenior+ Locked

Implement Validation and String Compression

This question evaluates string processing, input validation, tokenization, hierarchical string manipulation, and algorithmic complexity analysis skill...

Coding & AlgorithmsParsing & InterpretersData Cleaning & Wrangling
8
0
139 people solved
Mar 1, 2026
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