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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
09.07.2026
12.0k Questions 570 Companies09.07.2026
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
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
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
Amazon logo
Amazon
Medium
Data Scientist

Solve Search Insert Position Using Binary Search

Scenario Live coding round for an Amazon Applied Scientist position; candidate must solve LeetCode 35 (Search Insert Position) without helper librarie...

Coding & Algorithms
71
0
222 people solved
Aug 4, 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
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
Roblox logo
Roblox
Hard
Data Scientist

Determine Player Preference for Local Game Creators

Player Preference for Local Game Creators A Roblox analytics team wants to understand whether players prefer games created by local creators, such as ...

Analytics & Experimentation
32
0
94 people solved
Jul 12, 2025
Pinterest logo
Pinterest
Hard
Machine Learning Engineer Locked

Explain overfitting, underfitting, and regularization

This question evaluates understanding of model generalization, overfitting versus underfitting, the bias–variance tradeoff, and regularization techniq...

Machine LearningML Fundamentals
24
0
163 people solved
Mar 1, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Determine equality after limited swaps

Question LeetCode 1790. Check if One String Swap Can Make Strings Equal Follow-up: Given two strings, determine if they can become anagrams of each ot...

Coding & Algorithms
12
0
25 people solved
Jul 29, 2025
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Explain Backend Infrastructure Fundamentals

This question evaluates understanding of Kafka fundamentals—topics, partitions, consumer groups—plus rebalance mechanics and consumer-group message di...

Software Engineering FundamentalsMessaging & Event-DrivenConcurrency
9
0
75 people solved
Jun 3, 2026
TikTok logo
TikTok
Medium
Software Engineer

Describe a service performance challenge

Behavioral: Improving a Production Service's Performance Describe a challenging time you improved the performance of a production service. Include the...

Behavioral & LeadershipProject Deep DiveDebugging
11
0
90 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Share examples of impact and simplicity

Share examples of impact and simplicity Behavioral prompt: Exceeding customer expectations and simplifying complex problems Context You are in a softw...

Behavioral & Leadership
7
0
52 people solved
Aug 7, 2025
Optiver logo
Optiver
Medium
Quantitative Trader

Devise sequence-rule detection strategy

You are given an integer sequence with 2 ≤ n ≤ 50 terms, possibly following rules such as arithmetic/geometric progressions, alternating patterns, pol...

Coding & AlgorithmsMath & Number Theory
9
0
97 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Data Scientist

Explain P-value, Confidence Interval, and Multiple Testing Adjustments

Explain P-Value, Confidence Interval, and Multiple Testing Adjustments You are running online A/B experiments to evaluate a new product launch. Assume...

Statistics & Math
47
0
167 people solved
Jul 12, 2025
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Design a pin search engine

Design a Pinterest-style pin search engine with hybrid candidate generation, dual-encoder retrieval, multimodal ranking, pairwise/listwise losses, off...

ML System Design
5
0
101 people solved
Apr 9, 2025
Meta logo
Meta
Medium
Data Scientist

Design B2C chatbot success metrics and test plan

You own 'euro-chat', a B2C customer-support chatbot that aims to deflect agent contacts while preserving customer satisfaction. Design a rigorous succ...

Analytics & Experimentation
5
0
61 people solved
Oct 13, 2025
Bloomberg logo
Bloomberg
Easy
Software Engineer

Check connectivity between two subway stations

You are given a description of subway stations A, B, C, D, E, ... as a graph. For each station, you are told which other stations it directly connects...

Coding & AlgorithmsGraphs
17
1
167 people solved
Mar 11, 2026
Medium
Data Scientist

Simulate via inverse transform and Gibbs

Inverse transform: (a) Derive an algorithm to simulate from the Logistic(μ, s) distribution using its CDF and inverse CDF; show how to obtain samples ...

Statistics & Math
5
0
57 people solved
Oct 13, 2025
Google logo
Google
Medium
Machine Learning EngineerSenior+ Locked

Design ML system for self-driving perception

This question evaluates understanding of end-to-end ML system design for on-vehicle obstacle detection and collision avoidance, encompassing sensor fu...

ML System DesignComputer VisionMLOps & Model Serving
17
0
147 people solved
Dec 8, 2025
Meta logo
Meta
Medium
Data Scientist

Resolve Team Conflicts and Exceed Job Expectations Successfully

Resolve Team Conflicts and Exceed Job Expectations Successfully This behavioral prompt explores initiative beyond formal responsibilities and the abil...

Behavioral & Leadership
29
0
56 people solved
Jul 12, 2025
Coursera logo
Coursera
Medium
Software Engineer

Implement plurality and majority voting

You are given an array votes of length n, where each element is a candidate identifier (string or integer). Implement two voting systems: 1) Plurality...

Coding & Algorithms
7
0
62 people solved
Dec 15, 2025
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