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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
Coinbase logo
Coinbase
Medium
Data Scientist

Calculate Cumulative Sum for Each Integer in Table

numbers +-----+ | num | +-----+ | 1 | | 2 | | 13 | | 14 | | 15 | +-----+ Scenario You have a table containing one integer per row; for each row...

Data Manipulation (SQL/Python)
15
0
18 people solved
Jul 12, 2025
Meta logo
Meta
Easy
Data Scientist

Calculate Conversion Probability for Male Ad Impressions

Calculate Conversion Probability for Male Ad Impressions Scenario You are estimating conversion probabilities for ad impressions. Before knowing a use...

Statistics & Math
29
0
98 people solved
Aug 4, 2025
Google logo
Google
Hard
Data Scientist Locked

Model Soccer Shot Conversion

This question evaluates probabilistic predictive modeling, spatial-temporal feature engineering, model calibration and evaluation, and identification ...

Machine LearningSupervised LearningFeature Engineering
12
0
159 people solved
Dec 29, 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
164 people solved
Mar 1, 2026
Meta logo
Meta
Medium
Software Engineer

Implement basic expression evaluator

Implement a function to evaluate a string expression containing non-negative integers, '+', '-', '*', '/', and spaces. Multiplication and division hav...

Coding & Algorithms
5
0
42 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Data Scientist

Describe Handling Unexpected Feedback and Actions Taken

Describe Handling Unexpected Feedback and Actions Taken Behavioral: Resilience After Unexpected Negative Feedback or Rejection Context You are in an o...

Behavioral & LeadershipFailure & Learning
25
0
93 people solved
Aug 4, 2025
Asana logo
Asana
Medium
Software Engineer

Design a Twitter-like microblogging service

Design a Twitter-like microblogging system. You can describe it verbally and with structured notes. Requirements: - Users can post short messages. - U...

System DesignSearch & Feed SystemsSystem Design Fundamentals
16
0
274 people solved
Feb 8, 2026
Meta logo
Meta
Medium
Data Scientist

Analyze Top Call Initiators and Active French Video Callers

calls +---------+-----------+-------------+---------------------+---------+-----------+ | call_id | caller_id | receiver_id | call_start_time | co...

Data Manipulation (SQL/Python)
89
0
246 people solved
Aug 4, 2025
Instacart logo
Instacart
Medium
Software Engineer

Parse password from indexed matrix file

Question Given a filepath to a text file containing one index line [x, y] followed by a matrix of characters (origin at lower-left (0, 0)), return the...

Coding & Algorithms
34
0
107 people solved
Jul 29, 2025
Amazon logo
Amazon
Easy
Software Engineer Locked

Describe Delivering Under a Tight Deadline

This question evaluates ownership, judgment, prioritization, and the ability to deliver results under time pressure, including how the candidate balan...

Behavioral & LeadershipOwnership & Execution
19
4
297 people solved
May 2, 2026
TikTok logo
TikTok
Medium
Data Scientist

Compute last-to-previous ad impression gaps

Given impressions(ad_id INT, user_id INT, impression_ts TIMESTAMP) with multiple impressions per (user_id, ad_id), write a single SQL query to return,...

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

Diagnose Decline in Delivery Success: Data, Hypotheses, Tests

Diagnose Decline in Delivery Success: Data, Hypotheses, Tests Diagnose a 10% Drop in Successful Deliveries Scenario You manage a territory in a food-d...

Analytics & ExperimentationMetric DiagnosticsHypothesis Testing
16
0
131 people solved
Aug 4, 2025
Instacart logo
Instacart
Hard
Software Engineer

Design an e-commerce category page

Design an e-commerce category page System Design: Category Page with Facets, Sorting, Pagination, SEO, Caching, Personalization, and Real-Time Updates...

System DesignSearch & Feed SystemsSystem Design Fundamentals
5
0
94 people solved
Jul 15, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design a reusable web dialog component

You are building a UI component library for a web application and are asked to design and implement a reusable dialog (modal) component. Requirements ...

Software Engineering Fundamentals
3
0
56 people solved
Oct 31, 2025
Snapchat logo
Snapchat
Hard
Data Scientist

Design and analyze a banner A/B test

A/B Test Design: Home-Page Banner You are deciding whether to add a home-page banner in a consumer app. Design and analyze the A/B test end-to-end. As...

Analytics & Experimentation
7
0
64 people solved
Oct 13, 2025
Google logo
Google
Medium
Software Engineer

Describe manager and cross-team communication

Cross-Functional Communication, Expectations, and Risk Management (Behavioral) Context You are interviewing for a Software Engineer role in an onsite ...

Behavioral & Leadership
7
0
55 people solved
Sep 6, 2025
Affirm logo
Affirm
Medium
Data Engineer

Write SQL for Transactions and Customers

You are given two tables: - customers(customer_id INT PRIMARY KEY, signup_date DATE, region VARCHAR, segment VARCHAR) - transactions(transaction_id IN...

Data Manipulation (SQL/Python)
4
0
46 people solved
Aug 1, 2025
Meta logo
Meta
Medium
Data Scientist

Quality and frequency control for push notifications

Push Notifications: Quality, Overload Mitigation, and Per-user Caps You are a data scientist working on push notifications for a consumer app. Pushes ...

Analytics & Experimentation
56
0
140 people solved
Jul 12, 2025
Labelbox logo
Labelbox
Medium
Data Scientist

Explain Google ADK and Compare with LangChain, AWS Bedrock

Explain Google ADK and Compare with LangChain, AWS Bedrock Scenario You are interviewing for a data scientist role in a technical phone screen. You pr...

Behavioral & Leadership
5
0
73 people solved
Aug 4, 2025
TikTok logo
TikTok
Medium
Software Engineer

Explain a challenging project end-to-end

Behavioral Question: Explain a Challenging Project End-to-End Context: Behavioral and leadership prompt for a software engineer in a technical screen....

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
7
0
95 people solved
Sep 6, 2025
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