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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Capital One logo
Capital One
Medium
Data Scientist

Sketch function from derivatives and limits

Function analysis with derivative and concavity constraints Context (clarified): Assume f: R → R is differentiable everywhere and twice differentiable...

Statistics & Math
3
0
62 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Check palindrome and find next larger palindrome

This question evaluates proficiency in string and numeric manipulation, specifically palindrome detection and generation of the next strictly larger n...

Coding & Algorithms
5
0
57 people solved
Jan 3, 2026
Amazon logo
Amazon
Hard
Data Scientist

Analyze an A/B test over last 7 days

A/B Test Readout and Decision (2025-08-26 to 2025-09-01) Context A 50/50 A/B experiment on the checkout flow ran for 7 days, from 2025-08-26 through 2...

Analytics & Experimentation
5
0
76 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Analyze Revenue Shifts to Identify Cannibalization Effects

Analyze Revenue Shifts to Identify Cannibalization Effects Management observes strong revenue growth from one creation_source, such as a channel where...

Analytics & Experimentation
19
0
60 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Software Engineer

Implement right side view and local minimum search

Question LeetCode 199. Binary Tree Right Side View — Given the root of a binary tree, return the values of the nodes you can see ordered from top to b...

Coding & Algorithms
32
0
98 people solved
Jul 29, 2025
Meta logo
Meta
Medium
Software Engineer

Compute top-N active customers

Maintain and return the top N customers by cumulative activity amount, where activity is defined as the sum of deposit amounts, pay amounts, and trans...

Coding & Algorithms
7
0
52 people solved
Sep 6, 2025
Meta logo
Meta
Hard
Data Scientist

How would you design Shop-ad ranking?

Suppose the previous experiment shows that, in some contexts, users are more likely to convert when shown an ad that leads to an in-app Shop rather th...

Machine Learning
8
0
56 people solved
Oct 16, 2025
Roblox logo
Roblox
Hard
Data Scientist

Design leakage-free predictive maintenance pipeline

Predict 24-hour Machine Faults from an Hourly Panel (End-to-End Design) Context You are given a machine–hour panel: one row per machine per hour with ...

Machine Learning
10
0
78 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Count words in a document robustly

Given a text document, return the number of words under a precise definition. First, state the tokenization rules you will use (e.g., treat contractio...

Data Manipulation (SQL/Python)Parsing & Interpreters
13
0
90 people solved
Aug 14, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Describe a flagship project’s architecture and tradeoffs

Behavioral/Leadership: Deep Dive on a Significant Project Context: Onsite software engineering interview. Choose one substantial project you personall...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
12
0
123 people solved
Aug 12, 2025
Microsoft logo
Microsoft
Hard
Software Engineer

Design an image upload/download service

System Design: Image Upload and Download Service Context Design a production-grade image service used by web and mobile clients. The service must supp...

System DesignFile & Media StorageAPI Design
13
0
114 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Calculate Weekly CTR and Campaign-Specific CTR in SQL

AdEvents ad_id | campaign_id | event | view_id | event_date 1 | 10 | impression | 123 | 2023-11-07 1 | 10 | cli...

Data Manipulation (SQL/Python)
69
2
282 people solved
Jul 12, 2025
Uber logo
Uber
Hard
Software Engineer Locked

Solve two online assessment problems

This two-part prompt evaluates algorithmic problem-solving skills: the first problem tests optimization under index-based movement and number-theoreti...

Coding & AlgorithmsDynamic ProgrammingTrees
12
0
130 people solved
Mar 19, 2026
TikTok logo
TikTok
Medium
Machine Learning Engineer

Explain Transformer, GPT vs BERT, and PR metrics

Answer the following conceptual questions: 1. Transformer architecture - Describe the main components of a Transformer block and what each part doe...

Software Engineering FundamentalsTransformers & AttentionModel Evaluation
6
0
74 people solved
Dec 15, 2025
Ngrok logo
Ngrok
Medium
Software Engineer

Generate Color Feedback for a Word Guess

Generate Color Feedback for a Word Guess Given an answer string and a guess of the same length, produce one color for each guessed character: - "green...

Coding & Algorithms
0
0
17 people solved
May 1, 2026
Amazon logo
Amazon
Hard
Applied ScientistNew Grad

Implement Optimal Bucket Batching

You are given an array lengths of K document lengths and an integer G representing the number of available GPUs. A batch is assigned to one GPU, and e...

Coding & Algorithms
4
0
65 people solved
Apr 27, 2026
DoorDash logo
DoorDash
Hard
Data Scientist

Investigate Falling Successful Orders

You are interviewing for a Data Scientist role at DoorDash. In the Los Angeles market, the metric successful orders per day has declined over the last...

Analytics & Experimentation
8
0
83 people solved
Nov 1, 2025
Meta logo
Meta
Medium
Software Engineer

Solve 4 LeetCode algorithm problems

Question LeetCode 636. Exclusive Time of Functions LeetCode 253. Meeting Rooms II LeetCode 314. Binary Tree Vertical Order Traversal LeetCode 215. Kth...

Coding & Algorithms
3
0
28 people solved
Jul 29, 2025
Microsoft logo
Microsoft
Medium
Data Scientist Locked

How would you build and evaluate a classifier?

This question evaluates a data scientist's proficiency in binary classification model evaluation, end-to-end machine learning project design, and mode...

Machine Learning
4
0
62 people solved
Jan 16, 2026
Bridgewater logo
Bridgewater
Medium
Software Engineer Locked

Defend the Technical Details of a Project

Defend one project through a focused technical deep dive into its problem, architecture, request or data flow, and hardest implementation choices. Exp...

Behavioral & Leadership
1
0
32 people solved
Jul 8, 2026
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