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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
570
Updated
10.14.2026
12.2k Questions 570 Companies10.14.2026
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 EngineerSenior+

Design set with O(1) random access

Design a data structure ("FancySet") that stores unique integers and supports the following operations, each in average O(1) time: - add(x): Insert va...

Coding & AlgorithmsData Structure Design
17
0
202 people solved
Jan 1, 2026
Databricks logo
Databricks
Medium
Software Engineer

Design a rolling event tracker with ranges

Design a rolling event tracker that supports time-based queries. Implement a data structure with: ( 1) record(timestamp): record one event at integer ...

Coding & AlgorithmsData Structure DesignIntervals & Scheduling
25
0
211 people solved
Aug 7, 2025
Microsoft logo
Microsoft
Medium
Data Scientist

Solve two-pointer, sliding-window, and string tasks

Solve the following three coding tasks: 1) Two-pointer in-place de-duplication: Given a non-decreasing integer array nums and an integer k >= 1, modif...

Coding & Algorithms
17
0
128 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Solve tree and DP problems

This coding round contained two algorithm questions: 1. Deepest shared ancestor in a binary tree You are given the root of a binary tree and two di...

Coding & AlgorithmsTreesDynamic Programming
48
0
331 people solved
Oct 24, 2025
Uber logo
Uber
Medium
Software Engineer

Robot Grid Route with Charging Cells: Fewest Charges, Then Battery, Then Moves

A robot must travel across a 2D grid from a starting cell to a destination cell. Each cell of the grid is one of these characters: - S: the starting c...

Coding & AlgorithmsGraphsGrids & Matrices
0
0
5 people solved
Jun 12, 2026
xAI logo
xAI
Medium
Software Engineer

Compute dasher pay from order events

Dasher naive pay (active-time with overlapping orders) You are given a list of events describing when a delivery driver ("Dasher") accepts and fulfill...

Coding & AlgorithmsSimulation & State MachinesSorting
21
0
189 people solved
Mar 1, 2026
Intuit logo
Intuit
Easy
Software Engineer

Validate bracket sequence

Given a string s containing only the characters (, ), [, ], {, and }, determine whether the brackets are properly matched. A string is valid if: - Eve...

Coding & Algorithms
11
0
86 people solved
Apr 2, 2026
Google logo
Google
Hard
Software Engineer

Design high-throughput event subscription system

Design an Event Ingestion and Subscription System Context You are asked to design a horizontally scalable platform where producers send high-volume ev...

System Design
9
0
103 people solved
Sep 6, 2025
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Design a news feed ranking system

This question evaluates a candidate's ability to architect a scalable, low-latency personalized news feed recommendation system, assessing competencie...

ML System DesignRecommendation SystemsEmbeddings & Vector Search
17
0
140 people solved
Mar 1, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Design a Scalable Notification System

This question evaluates a candidate's ability to design a large-scale, asynchronous notification platform that fans messages out across push, email, a...

System DesignMessaging & Event-DrivenRate Limiting
11
0
131 people solved
Jun 9, 2026
Amperity logo
Amperity
Medium
Software Engineer

Resolve a Difficult Project Challenge

Resolve a Difficult Project Challenge Describe a difficult project challenge or conflict, how you diagnosed what was blocking progress, the action you...

Behavioral & Leadership
1
0
19 people solved
Aug 19, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design Near-Real-Time Top Songs by Country

Design country-level top-ten song rankings from high-volume listen events with idempotent ingestion, ten-minute refreshes, replay, and low-latency rea...

System Design
2
0
22 people solved
Aug 24, 2026
Zoox logo
Zoox
Hard
Software Engineer Locked

Can a Car Meet a Truck?

This question evaluates a candidate's ability to reason about grid-based movement and time-indexed reachability, testing competencies in algorithmic a...

Coding & AlgorithmsGrids & Matrices
8
0
137 people solved
Dec 13, 2025
Amazon logo
Amazon
Medium
Software EngineerNew Grad

Find the Maximum Island Area

Given a two-dimensional binary matrix, return the maximum area of any island. An island is a connected component of cells containing 1, using only up,...

Coding & AlgorithmsGrids & Matrices
1
0
14 people solved
Mar 18, 2026
Atlassian logo
Atlassian
Hard
Machine Learning Engineer Locked

Compute a moving average on a stream

This question evaluates understanding of streaming data structures, sliding-window aggregation, and the time/space trade-offs involved in maintaining ...

Coding & Algorithms
8
0
72 people solved
Mar 1, 2026
Uber logo
Uber
Medium
Software Engineer

Solve 12 coding interview problems

Below are multiple independent coding problems. --- Problem 1: Reduce an integer to 0 with \(\pm 2^i\) You are given a positive integer \(n\). In one ...

Coding & AlgorithmsDynamic ProgrammingBinary Search
366
0
3836 people solved
Feb 12, 2026
Atlassian logo
Atlassian
Medium
Software Engineer Locked

Design a CI/CD release notification service

This question evaluates object-oriented design skills, modeling of releases and changes, notification and event-driven system reasoning, and handling ...

Software Engineering Fundamentals
11
0
80 people solved
Jan 22, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

Match payments to invoices with fallback rules

This question evaluates a candidate's ability to design robust record-matching logic that handles identifier-based matches, fallback heuristics, and n...

Coding & AlgorithmsPayments & LedgersData Cleaning & Wrangling
20
1
178 people solved
Jan 6, 2026
ByteDance logo
ByteDance
Hard
Software Engineer

Assign Meetings and Find the Most-Used Room

Assign Meetings and Find the Most-Used Room There are n rooms numbered from 0 through n - 1 and meetings [start, end] with distinct start times. Proce...

Coding & Algorithms
1
0
27 people solved
Apr 28, 2026
Transunion logo
Transunion
Easy
Data ScientistIntern

How would you answer a DS video interview?

Question You are interviewing for a Data Scientist Intern role at TransUnion. The technical screen is an asynchronous (one-way) video interview: you a...

Behavioral & LeadershipCommunication & Stakeholders
24
0
213 people solved
Feb 3, 2026
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