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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
Snowflake logo
Snowflake
Hard
Software Engineer

Compute height of tree with deleted nodes; minimize deletions

You are given a rooted tree (not necessarily binary). Each node has a list of children. Some nodes are marked as deleted = true. Define the effective ...

Coding & AlgorithmsTreesDynamic Programming
13
0
222 people solved
Jan 16, 2026
Hebbia logo
Hebbia
Medium
Software Engineer Locked

Implement Ultimate Tic-Tac-Toe

This question evaluates object-oriented design, state management, rule validation, and algorithmic reasoning for both standard and Ultimate Tic-Tac-To...

Coding & Algorithms
6
0
42 people solved
May 22, 2026
Meta logo
Meta
Medium
Software Engineer

Design an in-memory cloud file system

In-Memory Cloud File System (OOD) Design an in-memory cloud file system that supports files owned by users with storage quotas. Data model / rules - E...

Coding & Algorithms
9
0
68 people solved
Feb 11, 2026
Uber logo
Uber
Medium
Software Engineer

Compute build order from dependencies

Given a set of package build dependencies, output a valid build order so that each package is built only after all of its dependencies. The input is a...

Coding & AlgorithmsGraphs
14
0
104 people solved
Sep 6, 2025
eBay logo
eBay
Easy
Applied Scientist

Behavioral: beyond-scope ownership, manager conflict, and a skip-level deadline at risk

These questions probe ownership and how you handle disagreement and deadline pressure with the people above you. Answer each part with a specific exam...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
0
0
12 people solved
Sep 24, 2026
Apple logo
Apple
Medium
Software Engineer

Explain use cases for clock synchronizers

Assume you are designing a digital system with multiple clock domains. The clocks have different frequencies and unknown phase relationships. You can ...

Software Engineering Fundamentals
7
0
103 people solved
Dec 8, 2025
Quora logo
Quora
Medium
Software Engineer

Count distinct palindromic subsequences

Given a string s consisting of lowercase English letters, compute how many distinct palindromic subsequence strings of lengths 2, 3, and 4 can be form...

Coding & Algorithms
12
0
98 people solved
Mar 19, 2026
CVS Health logo
CVS Health
Medium
Data Scientist

Calculate annual percentages and YoY by cohorts

Answer both SQL and Python parts. Be precise about deduping and denominator choices. SQL schema (sample rows): orders order_id | user_id | order_date ...

Data Manipulation (SQL/Python)SQLPandas & Python Data
17
0
132 people solved
Oct 13, 2025
Google logo
GoogleMetaAmazonBloomberg

Also asked at Amazon, Bloomberg

Easy
Software Engineer

Digit Product Minus Digit Sum

Problem For positive integer n, multiply its decimal digits and separately add them. Return the product minus the sum. `cpp class Solution { public: ...

Coding & AlgorithmsMath & Number Theory
0
0
6 people solved
Virtu Financial logo
Virtu Financial
Medium
Data Scientist

Implement Connect Four Winner Detection

Implement a Connect Four-style game engine. The board has 6 rows and 7 columns. Two players alternate turns. On each turn, the current player chooses ...

Coding & Algorithms
16
0
113 people solved
Jan 22, 2026
Zomato logo
Zomato
Medium
Product Manager

Zomato Product Sense: Helping Health-Minded Customers Find Better Dishes

You are a product manager at Zomato. Design a new feature that makes it easier for users to choose healthier options when they decide what and where t...

Product Design & StrategyProduct SenseMetrics & KPIs
1
0
9 people solved
May 19, 2026
Oracle logo
Oracle
Easy
Software Engineer

Design structure for first unique login user

You are given an online stream of user login events. Each event is a user ID (e.g., an integer or string) indicating that this user has just logged in...

Coding & Algorithms
6
0
83 people solved
Oct 12, 2025
Visa logo
Visa
Medium
Software Engineer I Locked

Count Cross-Array Pairs with a Target Sum

Count cross-array index pairs whose values add to a target, with duplicates contributing their full multiplicity. Use complementary frequency counts o...

Coding & Algorithms
4
0
47 people solved
Aug 8, 2026
Stripe logo
Stripe
Medium
Software EngineerSenior+

Architecture Deep-Dive: 15–20 Minute Past-Project Talk and Retrospective Follow-ups

One round of this staff-level loop is an architecture deep-dive on your own past work. You prepare a 15–20 minute presentation about a significant tec...

Behavioral & LeadershipProject Deep DiveCommunication & Stakeholders
2
0
34 people solved
Feb 22, 2026
Turo logo
Turo
Medium
Software Engineer

Discuss complex project decisions and observability

Answer the following behavioral questions with concrete examples (use a structured format such as STAR): - Describe a recent AI-related project you wo...

Behavioral & Leadership
9
0
67 people solved
Feb 12, 2026
Apple logo
Apple
Medium
Machine Learning Engineer

Design App Store search

Design the search system for a mobile app marketplace similar to an app store. Users enter short queries such as 'photo editor', 'budget tracker', or ...

ML System Design
10
0
107 people solved
Dec 17, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Design an image copyright-violation detection system

This question evaluates competency in designing scalable machine learning systems for image copyright detection, testing knowledge across computer vis...

ML System DesignComputer VisionEmbeddings & Vector Search
17
0
174 people solved
Feb 12, 2026
Google logo
Google
Hard
Software Engineer

Design quota enforcement for high concurrency

System Design: Quota Enforcement Service at Very High QPS Context You are designing a multi-tenant quota and rate-limiting service used by many backen...

System DesignRate LimitingAPI Design
20
0
197 people solved
Sep 6, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Optimize User-and-Region Queries on a Million-Row Table

Design an evidence-driven optimization plan for user and regional queries on a million-row table, comparing indexes, partitioning, sharding, and repli...

System Design
7
0
78 people solved
Aug 8, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Discuss project experience and teamwork

Discuss project experience and teamwork Behavioral & Leadership: Project Experience and Teamwork (Software Engineer, Onsite) Context: Provide concise,...

Behavioral & Leadership
8
0
130 people solved
Jul 28, 2025
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