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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
383
Companies
980
Updated
11.12.2026
383 Questions 980 Companies11.12.2026
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
OneMain Financial logo
OneMain Financial
Medium
Data Scientist

Write SQL for cohort retention and ARPU

Using PostgreSQL, compute monthly signup cohort D30 retention and 30-day ARPU. Cohort month = date_trunc('month', signup_date). D30 retention = users ...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
4
1
93 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist Locked

Write SQL for seller and category metrics

This question evaluates proficiency in SQL data manipulation—principally joins, aggregations, grouping, filtering, date arithmetic, and safe handling ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
7
1
46 people solved
Feb 15, 2026
Shopify logo
Shopify
Hard
Data Scientist

Calculate Pirated Usage and Revenue Loss

You are analyzing theme piracy on an e-commerce platform. Assume the analysis window is 2023-01-01 through 2023-12-31, all timestamps are stored in UT...

Data Manipulation (SQL/Python)SQL
24
0
234 people solved
Jan 12, 2026
Meta logo
Meta
Medium
Data Scientist

Find the most-used app

You work on Oculus app engagement analytics. Tables user_activity - user_id (BIGINT) - date (DATE) — day of activity (assume UTC unless otherwise spec...

Data Manipulation (SQL/Python)Metrics & KPIsSQL
8
0
56 people solved
Aug 17, 2025
Coinbase logo
Coinbase
Medium
Machine Learning Engineer

Write SQL to rank top products per category

You are given two tables: products - product_id (int, primary key) - category (string) order_items - order_id (int) - product_id (int) - quantity (int...

Coding & AlgorithmsSQL
13
1
144 people solved
Dec 4, 2025
Meta logo
Meta
Medium
Data Scientist

Compute SHOP spend share and model performance

You work on ads measurement. Advertisers can drive users to either Facebook Shop ('SHOP') or their own website ('WEBSITE'). After an ad is shown, you ...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
9
0
87 people solved
Aug 21, 2025
Amazon logo
Amazon
Medium
Data Scientist

Find top-spend categories per customer with ranking

Using the schema and sample data below, write a single ANSI SQL query (CTEs allowed; no temp tables) that returns, for each customer, their top 2 prod...

Data Manipulation (SQL/Python)SQL
3
0
66 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Build DID panel and compute effects in SQL

Using the schema and toy data below, write SQL to construct a user-week panel and compute a clean pre/post DID dataset for first reminder exposure. Re...

Data Manipulation (SQL/Python)Causal InferenceSQL
10
0
142 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Measure Late Deliveries and Identify Top Delayed Restaurants

orders +----------+---------+--------------+---------------------+-------------------------+-----------------------+ | order_id | user_id | restaurant...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
10
1
85 people solved
Aug 4, 2025
Notion logo
Notion
Medium
Data Scientist Locked

Analyze Document Collaboration CSVs

Analyze Document Collaboration CSVs evaluates SQL or pandas logic, joins, grouping, window functions, null handling, edge cases, and validation in a r...

Data Manipulation (SQL/Python)SQL
10
0
85 people solved
Jul 1, 2025
Airbnb logo
Airbnb
Medium
Data ScientistSenior+

Turn a Vague Retention Request into a Metric and SQL at a Home-Sharing Marketplace

A two-sided home-sharing marketplace, where guests book stays at listings that hosts publish, is hiring an analytics lead. In a case-oriented SQL roun...

Data Manipulation (SQL/Python)Metrics & KPIsSegmentation & Cohort Analysis
0
0
1 people solved
Aug 1, 2026
Microsoft logo
Microsoft
Medium
Site Reliability EngineerSenior+

SQL: count files where bull and bear appear as standalone space-delimited words

A document store keeps one row per file together with the file's full text. For each of the two words bull and bear, report how many files contain tha...

Data Manipulation (SQL/Python)SQL
1
0
12 people solved
Jul 30, 2026
Notion logo
Notion
Medium
Data Scientist

Analyze document collaboration patterns

You are given two CSV files and asked to analyze collaboration behavior on documents. File 1: document_activity.csv Each row is a document view event....

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
19
0
143 people solved
Aug 10, 2025
Capital One logo
Capital One
Medium
Data Scientist

Sort Flights by Company Volume and Per-Destination Flight Counts

A table holds flight records, one row per flight. Write a query that lists every flight with only three columns, id, destination and departure_time, s...

Data Manipulation (SQL/Python)SQL
0
0
1 people solved
Jul 13, 2026
Meta logo
Meta
Medium
Data Scientist

Compute survey rates and bias-correct ratings

Today is 2025-09-01. Use the schema and sample data below to answer A and B with SQL (standard SQL; you may use CTEs and window functions). Assume tim...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
4
0
73 people solved
Oct 13, 2025
Elsevier logo
Elsevier
Easy
Data Scientist

Load a Results File in pandas and Compute Overall and Per-Group Pass/Fail Rates

In a data scientist technical round, after a project discussion, you get a short pandas exercise: you are given a file, you read it into Python, and y...

Data Manipulation (SQL/Python)Pandas & Python DataData Cleaning & Wrangling
0
0
1 people solved
Jul 14, 2026
Meta logo
Meta
Easy
Data Scientist Locked

Compute this-year spend share of last-year whales

This question evaluates proficiency in data manipulation and analytics engineering, specifically SQL and Python skills for aggregations, joins, calend...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
6
1
48 people solved
Feb 15, 2026
Nuro logo
Nuro
Easy
Data Engineer

Compute unique duration by merging intervals

Problem You have an autonomous-driving clip dataset where each row represents a time interval from a driving run. Table: clips | column | type | descr...

Data Manipulation (SQL/Python)Intervals & SchedulingSQL
10
0
113 people solved
Jul 8, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Compute CTR for peak vs non-peak hours

This question evaluates a candidate's ability to compute time-based click-through rate metrics using SQL and data manipulation techniques, including j...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
11
0
75 people solved
Feb 16, 2026
Meta logo
Meta
Medium
Data Scientist Locked

Analyze advertiser spend by source

This question evaluates proficiency in data manipulation and analytics using SQL or Python, testing skills such as joins, time-based filtering, cohort...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
7
0
55 people solved
Feb 9, 2026
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