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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Salesforce logo
Salesforce
Easy
Backend Engineer

Design a Chat Analytics Backend

Design the backend of an internal analytics system for a conversational AI product similar to ChatGPT. The goal is to power an analytical metrics dash...

System DesignETL & Data PipelinesBatch & Stream Processing
6
0
94 people solved
Dec 4, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Design Global Nearby Restaurant Search

This question evaluates a candidate's ability to design a large-scale, low-latency distributed system that supports geospatial indexing, API and data ...

System DesignGeo & Delivery SystemsSearch & Feed Systems
12
0
165 people solved
Mar 17, 2026
Meta logo
Meta
Medium
Software Engineer

Design a Coding Contest Platform

Design an online coding contest platform that supports programming competitions, code submission, automated judging, and live leaderboards. The platfo...

System Design
1
0
26 people solved
Mar 17, 2026
Freddie Mac logo
Freddie Mac
Medium
Machine Learning EngineerSenior+

Describe a Machine Learning Project

In a Lead Machine Learning Engineer interview, present one machine learning project that you led or substantially owned. In 2-4 minutes, cover: - A 20...

Behavioral & Leadership
5
0
38 people solved
Mar 29, 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
8
0
69 people solved
Dec 11, 2025
PayPal logo
PayPal
Medium
Software Engineer

Explain AtomicInteger and ABA problem

Explain AtomicInteger and ABA problem How does AtomicInteger implement atomic updates (e.g., via CAS using Unsafe or VarHandles)? What is the ABA prob...

Coding & Algorithms
5
0
71 people solved
Aug 7, 2025
Amazon logo
Amazon
Medium
Software EngineerSenior+ Locked

Answer Leadership and Collaboration Prompts

This question evaluates leadership, collaboration, interpersonal communication, conflict resolution, adaptability, and self-reflection competencies wi...

Behavioral & Leadership
4
0
41 people solved
Nov 17, 2025
AMD logo
AMD
Easy
Software Engineer

PCIe deep dive: TS1/TS2, LTSSM link training, TLP types and transaction ordering rules

You are interviewing for a PCI Express (PCIe) verification role, and the interviewer goes deep on the protocol: from link training at the physical lay...

Software Engineering Fundamentals
0
0
6 people solved
Apr 30, 2024
Meta logo
Meta
Hard
Product Analyst

Evaluate WhatsApp Group Video Calling

Meta is considering improvements to WhatsApp group video calling. The product team wants to understand whether users need this feature, how to increas...

Analytics & Experimentation
4
0
35 people solved
Mar 15, 2026
Bloomberg logo
Bloomberg
Easy
Software Engineer

Minimize travel cost with two cities

You are scheduling candidates to attend an onsite interview. Each candidate i can fly to New York for cost c1[i] or to San Francisco for cost c2[i]. C...

Coding & AlgorithmsGreedy
19
2
148 people solved
Mar 11, 2026
TikTok logo
TikTok
Medium
Software Engineer

Format messages with paginated suffixes

You are given a message string s and an integer width w. Split s into multiple chunks, preserving character order, and append a suffix "i/n" to each c...

Coding & Algorithms
7
0
51 people solved
Jul 29, 2025
Amazon logo
Amazon
Medium
Product Manager

Answer AWS PM behavioral prompts

You are preparing for a Product Manager behavioral interview. Build structured, interview-ready answers for this prompt cluster from the original inte...

Behavioral & Leadership
4
0
58 people solved
Jan 19, 2024
Goldman Sachs logo
Goldman Sachs
Medium
Product Manager

How to answer HireVue behavioral prompts

You are preparing for a Product Manager behavioral interview. Build structured, interview-ready answers for this prompt cluster from the original inte...

Behavioral & Leadership
7
0
70 people solved
Dec 15, 2023
Old logo
Old
Hard
Data ScientistNew Grad

Solve Exact Probability and Expected-Value Exercises

Solve Exact Probability and Expected-Value Exercises Work through the following short quantitative problems. Give exact simplified fractions when the ...

Software Engineering Fundamentals
3
0
27 people solved
May 16, 2024
TikTok logo
TikTok
Medium
Data Scientist

Design Metrics for Content Moderation and Chatbot Evaluation

Design Metrics for Content Moderation and Chatbot Evaluation Scenario Trust & Safety data science: You are asked to design metrics for two situations:...

Analytics & Experimentation
4
0
73 people solved
Aug 4, 2025
ByteDance logo
ByteDance
Medium
Data Scientist

Campaign Efficiency Metrics and Below-Average CTR

Campaign Efficiency Metrics and Below-Average CTR You are given an ad_campaigns table with one row per campaign: | Column | Type | Meaning | | --- | -...

Data Manipulation (SQL/Python)
2
0
30 people solved
Apr 4, 2026
Walmart Labs logo
Walmart Labs
Hard
Software Engineer

Shortest Talent-Covering Team Starting At Each Index

There are n students in a line. Each student has exactly one talent represented by an integer from 1 to talentsCount. A valid team is a contiguous sub...

Coding & Algorithms
4
0
30 people solved
Apr 6, 2026
Microsoft logo
Microsoft
Medium
Technical Program ManagerSenior+

Evaluate an ML feature launch

You are interviewing for a Technical Program Manager product/technical decision case. Answer this prompt in a structured way: Suppose Azure IoT Edge i...

Product / Decision Making
4
0
75 people solved
Jan 1, 2024
Amazon logo
Amazon
Medium
Data Scientist

Explore Subscription Patterns and Status Transitions with SQL/Pandas

subscriptions +-----------------+---------+-------------+ | subscription_id | status | status_date | +-----------------+---------+-------------+ | 10...

Data Manipulation (SQL/Python)
69
0
19 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Software Engineer

Implement and compare key design patterns

Implement and compare key design patterns Implement Core GoF Patterns in Java and Discuss Trade-offs Context You are designing a small Java library an...

System Design
8
0
60 people solved
Jul 17, 2025
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