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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 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
Netflix logo
Netflix
Medium
Software EngineerSenior+

Design an Ad Frequency Capping System

Design a frequency capping system for an advertising platform. A frequency cap limits how many times a user can be shown an ad, campaign, line item, o...

System DesignAds SystemsRate Limiting
14
0
182 people solved
Apr 3, 2026
Amazon logo
Amazon
Medium
Software Engineer

Detect cycle in a directed graph

Given a directed graph represented by an adjacency list with n vertices and m edges, determine whether the graph contains a cycle. Describe and implem...

Coding & AlgorithmsGraphs
9
0
100 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Software Engineer Locked

Prepare Leadership Principle Stories

This question evaluates leadership, ownership, decision-making, communication, and problem-solving competencies through concrete first-person project ...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
17
0
321 people solved
May 11, 2026
Moloco logo
Moloco
Medium
Machine Learning EngineerIntern

Simulate bubble elimination and maximize common prefix

You are given two independent coding tasks (as in a multi-question OA). Solve each. Task A — Grid “bubble/candy” elimination simulation You are given ...

Coding & AlgorithmsSimulation & State MachinesGrids & Matrices
9
0
97 people solved
Dec 27, 2025
TikTok logo
TikTok
Hard
Software Engineer

Design and explain your project architecture

Question Pick one of your recent projects and walk an interviewer through its architecture end-to-end. Sketch a high-level diagram, then go deep on th...

System DesignProject Deep DiveSystem Design Fundamentals
9
0
145 people solved
Aug 13, 2025
Stripe logo
Stripe
Medium
Software Engineer

Discuss compensation expectations and flexibility

HR Screen — Compensation Expectations Context: Software Engineer, HR screen. For clarity, total compensation typically includes base salary, annual bo...

Behavioral & Leadership
8
0
71 people solved
Aug 14, 2025
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer II Locked

Explain Why You Are Changing Jobs and How You Communicated the Decision

Frame a job change honestly and constructively by connecting your next-step goals to the target role, handling manager communication professionally, a...

Behavioral & Leadership
1
0
13 people solved
Aug 8, 2026
Meta logo
Meta
Medium
Data Scientist

Compute unconnected 60s posts and reactions averages

Given these tables and sample data, write SQL that answers both tasks below. Use today = 2025-09-01 and interpret "last/past 7 days" as the inclusive ...

Data Manipulation (SQL/Python)
4
0
31 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Product Manager

Recovering a Lost Deliverable

Incident Scenario: Recovering a Lost Deliverable You are the PM leading a three-person team on the build-out of a new train station in a regulated env...

Product / Decision Making
13
0
71 people solved
Jul 4, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer Locked

Design training for multimodal embedding model

This question evaluates proficiency in end-to-end multimodal embedding system design, including model architecture, supervision and loss strategies, e...

ML System Design
5
0
65 people solved
Jan 22, 2026
Amazon logo
Amazon
Medium
Software Engineer

Discuss deadlines, feedback, and deep dives

Question This Amazon software engineer behavioral screen walks through a set of leadership-principle prompts. Be ready to tell a distinct, recent stor...

Behavioral & Leadership
13
0
97 people solved
Sep 6, 2025
Snowflake logo
Snowflake
Hard
Software Engineer Locked

Design an ACL authorization checking service

This question evaluates system design and security architecture skills, focusing on centralized authorization/ACL models, API and data modeling, cachi...

System DesignAuthentication & Authorization
44
0
307 people solved
Jan 6, 2026
Nuro logo
Nuro
Easy
Data Engineer

Compute unique duration by merging intervals

Problem You have an autonomous-driving clip dataset where each row represents a time interval from a driving run. Table: clips | column | type | descr...

Data Manipulation (SQL/Python)Intervals & SchedulingSQL
9
0
105 people solved
Jul 8, 2025
Otter.Ai logo
Otter.Ai
Medium
Data EngineerSenior+

Find Every Project with the Most Employees

The interview report explicitly identified the “Project with Most Employees” SQL exercise. Use the following self-contained PostgreSQL schema: `text e...

Data Manipulation (SQL/Python)
2
0
37 people solved
Apr 2, 2026
Harvey logo
Harvey
Medium
Backend Engineer

Resolve conflict across teams

Describe a time when you had to coordinate between two teams that were in conflict or seriously misaligned. What caused the disagreement, how did you ...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
17
0
142 people solved
Feb 18, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Design duplicate-file detection using size

You are given a large POSIX-like filesystem containing millions of files across nested directories. Design an algorithm to find groups of duplicate fi...

Coding & AlgorithmsOperating SystemsFile & Media Storage
15
1
110 people solved
Jul 31, 2025
TikTok logo
TikTok
Easy
Software Engineer

Find first and last index of target

You are given an integer array nums sorted in non-decreasing order and an integer target. Return a pair [left, right] where: - left is the index of th...

Coding & Algorithms
9
0
79 people solved
Oct 19, 2025
Apple logo
Apple
Medium
Software Engineer

Improve chip performance without process advances

Assume you are working on a digital chip, but the semiconductor process node and basic device technology are fixed: there is no new, faster process an...

Software Engineering Fundamentals
10
0
76 people solved
Dec 8, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Clean and Aggregate Transactions for Finance Dashboard

transactions id | user_id | amount | timestamp | category 1 | 1001 | 19.99 | 2023-01-01 09:00:00 | grocery 2 | 1001 | 5.50 | 2023...

Data Manipulation (SQL/Python)
80
0
28 people solved
Jul 12, 2025
Squarepoint logo
Squarepoint
Medium
Data Scientist

Implement drawdown, single-trade profit, coin change

Implement and analyze the following three problems: 1) Maximum drawdown of cumulative PnL: "What is the maximum drawdown of a cumulative PnL (profit a...

Coding & AlgorithmsArrays & StringsDynamic Programming
10
0
75 people solved
Sep 6, 2025
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