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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k 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
Netflix logo
Netflix
Hard
Data Engineer Locked

Explain concurrency and reliability tradeoffs

This question evaluates skills in concurrent programming (thread-safety, synchronization primitives, memory visibility and lazy initialization) and di...

Software Engineering FundamentalsConcurrencyConsistency & Availability
6
0
77 people solved
Dec 13, 2025
Capital One logo
Capital One
Easy
Data Scientist

Compute monthly break-even subscribers

Break-even Analysis for a Subscription Streaming Service Context A streaming startup incurs monthly fixed costs and per-subscriber variable costs and ...

Statistics & Math
12
0
82 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Software Engineer

Solve vault rate and subset-sum

1) Robber vaults rate: You are given an array vaults of positive integers where vaults[i] is the amount in the i-th vault, and an integer h (hours). I...

Coding & AlgorithmsDynamic ProgrammingBinary Search
9
0
83 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Data Scientist

Troubleshoot Sudden KPI Drop After Recent Product Release

Troubleshoot Sudden KPI Drop After Recent Product Release Scenario A product dashboard shows a sudden drop in a key business KPI immediately after a n...

Analytics & Experimentation
11
0
78 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Demonstrate leadership with STAR examples

Demonstrate leadership with STAR examples Behavioral (STAR) Prompts for a Software Engineer Onsite Context You are preparing for a Software Engineer o...

Behavioral & Leadership
8
0
57 people solved
Jul 31, 2025
Medium
Data Scientist

Compare trees, RF, and gradient boosting

Decision Trees, Random Forests, and Gradient-Boosted Trees You are interviewing for a Data Scientist role and are asked to compare common tree-based m...

Machine Learning
7
0
49 people solved
Oct 13, 2025
Morgan Stanley logo
Morgan Stanley
Medium
Data Scientist

Estimate Greeks and hedging PnL

Consider a vanilla European option under the Black-Scholes framework. 1. Without using a calculator, explain how you would mentally estimate the optio...

Software Engineering Fundamentals
4
0
68 people solved
Dec 8, 2025
NewsBreak logo
NewsBreak
Medium
Machine Learning Engineer

Explain why our company and startups

Explain why our company and startups Motivation and Startup Fit — Behavioral (Machine Learning Engineer) Context You are interviewing for a Machine Le...

Behavioral & Leadership
3
0
46 people solved
Aug 9, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

How do you assess database system stability?

You are responsible for a production database (or database platform) used by multiple services. How would you determine whether the database system is...

Software Engineering Fundamentals
2
0
51 people solved
Feb 28, 2026
Capital One logo
Capital One
Medium
Data Scientist

Merge seven tables into one clean DataFrame

Using pandas only (no loops over rows), write a function build_facts(customers, orders, order_items, products, payments, shipments, refunds) -> pd.Dat...

Data Manipulation (SQL/Python)
0
0
15 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Optimize Predictive Analytics: Feature Engineering to Model Evaluation

End-to-End Predictive Analytics Project Walkthrough You are interviewing for a Data Scientist role. The interviewer asks you to describe a predictive ...

Machine Learning
23
0
90 people solved
Jul 12, 2025
Amazon logo
Amazon
Easy
Software Engineer

Describe a complex problem you solved

Behavioral questions 1. Complex problem: Tell me about a time you worked on a complex technical problem. - What made it complex (scale, ambiguity, ...

Behavioral & Leadership
7
0
72 people solved
Oct 18, 2025
Spotify logo
Spotify
Medium
Machine Learning Engineer

Compare Unsupervised Clustering Methods

Explain several unsupervised clustering approaches and when you would use each one. At a minimum, compare centroid-based clustering, hierarchical clus...

Machine LearningUnsupervised LearningFeature Engineering
8
0
112 people solved
Mar 4, 2026
Thumbtack logo
Thumbtack
Hard
Data Scientist

Define success metrics for Instant Book

Instant Book: Metrics, Measurement, Rollout, and Risk Plan Context You are evaluating an "Instant Book" feature that allows customers to immediately b...

Analytics & Experimentation
4
0
70 people solved
Oct 13, 2025
TikTok logo
TikTok
Hard
Data Scientist

Design causal measurement without randomization

Causal Study Design: Notification Feature Impact on 7-Day Retention Context: A new notification feature shipped on 2025-06-01. Randomized rollout was ...

Analytics & Experimentation
10
0
74 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Leverage Data Sources for Effective Push Notification Strategy

Data Sources and Metrics for Push Notification Strategy A product team wants to improve the quality and impact of mobile push notifications for a cons...

Analytics & Experimentation
8
0
50 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Software Engineer

Explain project choices, metrics, and AI usage

Behavioral / Project deep-dive You’ll be asked to walk through a recent project you worked on (preferably one with meaningful technical and business i...

Behavioral & LeadershipProject Deep DivePrioritization & Tradeoffs
9
0
83 people solved
Mar 1, 2026
Gopuff logo
Gopuff
Easy
Machine Learning Engineer

Explain SHAP, Word2vec, Random Forests, Normalization, and Transformers

Explain the following machine learning fundamentals. Use definitions, mechanisms, and small conceptual examples; no dataset or company-specific applic...

Machine LearningML FundamentalsModel Interpretability
1
0
15 people solved
Mar 18, 2024
Meta logo
Meta
Medium
Data Scientist

Evaluating a 15 % reduction in post‑card height

Evaluating a 15 Percent Reduction in Post-card Height You own the feed UX for a social app. Designers propose shrinking each post card's height by 15 ...

Analytics & ExperimentationExperiment Design (A/B Testing)Metric Diagnostics
148
1
127 people solved
Jul 12, 2025
Amazon logo
Amazon
Medium
Product Manager

Describe impact, ambiguity, and conflict

You are speaking with an Amazon hiring manager for a non-technical role. Prepare structured answers to the following behavioral prompts: Constraints &...

Behavioral & Leadership
8
0
70 people solved
May 7, 2024
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