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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Data Scientist

Build DiD dataset with SQL

Using the schema and sample data below, write SQL to build an individual-day panel suitable for staggered-adoption DiD of the shuttle’s effect on part...

Data Manipulation (SQL/Python)SQL
6
0
80 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Optimize Feature Selection and Handling in Machine Learning Models

Optimize Feature Selection and Handling in Machine Learning Models You are building a customer propensity model to predict whether a user will purchas...

Machine Learning
21
0
148 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Easy
Data Scientist

Reverse a list in-place

Coding Task: Reverse a List In-Place (Python) Context You're implementing a utility function during a technical screen. The function must reverse a Py...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window
13
0
113 people solved
Oct 13, 2025
Axon logo
Axon
Hard
Software Engineer

Design an e-commerce analytics warehouse

Design an Analytics Warehouse for an E‑commerce Platform Context An e‑commerce platform exposes the following user-facing services: - Item search - It...

Analytics & ExperimentationWarehouse & Lakehouse ArchitectureData Ingestion & CDC
11
0
112 people solved
Sep 6, 2025
Google logo
Google
Hard
Software Engineer

Answer collaboration, ambiguity, growth, and failure questions

Behavioral Interview Prompts Answer the following prompts using a structured format (e.g., STAR: Situation, Task, Action, Result). Assume the intervie...

Behavioral & Leadership
10
0
77 people solved
Jan 7, 2026
Google logo
Google
Hard
Product Manager

Product Ideation with Street-View Car Images

Product Sense and Decision Making: Street View Images and Fair Delivery You are in a Product Manager interview. Work through two separate product prom...

Product / Decision MakingProduct SenseAI Product Management
20
0
161 people solved
Jul 4, 2025
Intuit logo
Intuit
Medium
Software Engineer Locked

Format VARCHAR amounts into $ with M/B suffix

This question evaluates a candidate's ability to perform SQL data manipulation tasks such as string-to-number conversion, conditional scaling and suff...

Software Engineering FundamentalsSQL
10
0
74 people solved
Feb 11, 2026
Supio logo
Supio
Easy
Software Engineer

Compute max planes shot and session count

Problem 1: Max planes you can shoot before any lands You are given two equal-length arrays: - altitude[i]: the initial altitude of plane i (positive i...

Coding & Algorithms
3
0
55 people solved
Feb 12, 2026
Intuit logo
Intuit
Hard
Data Scientist

Diagnose rising delivery cost precisely

Problem: Delivery Cost per Order Increased — Design an Analysis Plan Context A restaurant reports a significant increase in delivery cost per order in...

Analytics & Experimentation
9
0
69 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Easy
Data ScientistSenior+

Write SQL for 30-day activity and D7 retention

You are given two tables. Table: trades - user_id (BIGINT) - trade_time (TIMESTAMP) — timestamp of the trade - volume (NUMERIC) - asset (TEXT) Table: ...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
9
0
68 people solved
Feb 6, 2025
Meta logo
Meta
Medium
Data Scientist

Calculate Weekly Thread Engagement with Reactions in SQL

messages +------------+--------+----------+--------------+---------------------+ | message_id | sender | receiver | has_reaction | timestamp ...

Data Manipulation (SQL/Python)
81
0
210 people solved
Jul 12, 2025
Shopify logo
Shopify
Easy
Data Scientist Locked

How would you measure App Store launch success?

This question evaluates a data scientist's proficiency in product analytics, experimentation, marketplace metrics design, and instrumentation, includi...

Analytics & ExperimentationLaunch EvaluationMetrics & KPIs
10
0
103 people solved
Nov 8, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design faster delay-time computation

You are given an array of integers representing task priorities. Tasks execute from right to left. For each index i, define its delay time as j - i wh...

Coding & Algorithms
3
0
51 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Hard
Data Scientist

Design an experiment for order batching

Experiment Design: Two-Order Batching Policy During Peak Hours Context DoorDash plans to test a dispatch policy that allows a dasher to pick up two ne...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
15
0
206 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Software Engineer

Compute product excluding index without division

Given an integer array nums, return an array ans where ans[i] equals the product of all elements of nums except nums[i], without using division. Achie...

Coding & Algorithms
6
0
61 people solved
Aug 13, 2025
Amazon logo
Amazon
Hard
Software Engineer

Design Thread-Safe Tagging and Bookstore Systems

Design Thread-Safe Tagging and Bookstore Systems System Design and OO Design (Onsite) Part 1: Thread-Safe Document–Tag Design Design object-oriented c...

System Design
9
0
75 people solved
Aug 4, 2025
TCS logo
TCS
Hard
Data Scientist

Compare Tableau blending, joins, and filters

Tableau Integration Exercise: Joins vs Blends, Filters, and Order of Operations Data You have two sources. Primary (Orders) - Columns: OrderID, State,...

Analytics & ExperimentationBI & Reporting SystemsSQL
15
0
121 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Implement scalable prime generator

Write a function first_n_primes(n) that returns the first n prime numbers in ascending order. Constraints: - 1 ≤ n ≤ 100,000. - Aim for O(n log log n)...

Coding & Algorithms
6
0
77 people solved
Oct 13, 2025
Roblox logo
Roblox
Hard
Data ScientistIntern

Fit logistic regression and return top features

You are given: - X: a 2D numeric array where each row is a feature and each column is an observation (shape: n_features x n_samples). - feature_names:...

Machine LearningSupervised LearningML Coding
5
0
94 people solved
Nov 23, 2025
PayPal logo
PayPal
Easy
Data Scientist Locked

Design and evaluate a fraud detection strategy

This question evaluates fraud domain knowledge, quantitative model evaluation, metrics and diagnostic design, operational strategy formulation, segmen...

Analytics & ExperimentationModel EvaluationMetrics & KPIs
6
0
101 people solved
Jan 17, 2026
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