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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
Meta logo
MetaAmazonGoogleBloomberg

Also asked at Google, Bloomberg

Medium
Software Engineer

Find Observed Customers Who Purchased the Entire Product Set

Problem Return customer_id values appearing in Customer that bought every product_key in Product. Repeated Customer rows do not represent additional d...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Meta logo
Meta
Easy
Data Scientist

Compute multi-account user distribution and unread pct

You are working on a product where a user can have multiple accounts, and each account can receive notifications. Tables Assume the following schemas:...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
5
0
60 people solved
Feb 3, 2026
PayPal logo
PayPal
Easy
Data Scientist

Write SQL for top drivers and cancellation rates

Question You work on a rideshare / ride-hailing product that connects drivers and riders, with a focus on airport pickups. Using SQL, answer the quest...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
13
2
181 people solved
Dec 7, 2025
OpenAI logo
OpenAI
Medium
Data ScientistSenior+

Write SQL for post-trial conversion cohorts

Using the schema below, write SQL to compute, for users first exposed between 2025‑06‑01 and 2025‑06‑30 (inclusive), the intent‑to‑treat paid conversi...

Data Manipulation (SQL/Python)SQLExperiment Analysis & Readout
11
0
157 people solved
Oct 13, 2025
TikTok logo
TikTok
Easy
Data Scientist

Write monthly customer and sales SQL queries

You are analyzing a food-delivery marketplace. Tables Assume the following schema (you may add minor helper CTEs as needed): orders - order_id (BIGINT...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
15
4
213 people solved
Nov 27, 2025
CVS Health logo
CVS Health
Easy
Data Scientist

Compute specialty spend share and top age band

You are given healthcare claims data split across member tables. Tables Assume the following schemas (types may be adapted to your SQL dialect): mem1 ...

Data Manipulation (SQL/Python)SQLPandas & Python Data
18
2
164 people solved
Oct 17, 2025
Google logo
Google
Medium
Data Scientist

Analyze video flags and reviews with SQL

You are designing SQL queries for YouTube Trust & Safety. Use the schema and sample data below. Unless stated otherwise, treat a flag as reviewed if t...

Data Manipulation (SQL/Python)SQL
38
3
331 people solved
Oct 13, 2025
Temu logo
Temu
Easy
Data EngineerSenior+ Locked

Compute User Login Streaks

This question evaluates SQL proficiency in processing event logs for time-series analysis, encompassing date arithmetic, deduplication of same-day eve...

Coding & AlgorithmsSQL
19
0
147 people solved
Apr 3, 2026
Airbnb logo
Airbnb
Medium
Data Scientist

Compute C/T metrics from bookings and visits

Given two tables, compute control vs treatment (C/T) metrics, apply 24‑hour attribution, and generate a daily plot. Treat “today” as 2025‑09‑01; use t...

Data Manipulation (SQL/Python)SQLData Cleaning & Wrangling
36
0
335 people solved
Oct 13, 2025
Amazon logo
Amazon
Medium
Data Scientist

Compute join counts and window ranks

Given the following small schema and data, answer all parts precisely and justify each count/output. Tables and rows: Customers(cust_id INT PRIMARY KE...

Data Manipulation (SQL/Python)SQLIndexing & Query Performance
13
0
111 people solved
Oct 13, 2025
Google logo
GoogleMeta
Easy
Software Engineer

List Available Prices by Product and Store

Problem Return product_id, store and price for each non-NULL store price in Products. The three store labels are store1, store2 and store3. Omit unava...

Data Manipulation (SQL/Python)SQL
0
0
8 people solved
Home Depot logo
Home Depot
Medium
Data Analyst

Debug row loss after SQL joins

You are reviewing a buggy SQL query used by a retail analytics team at a home-improvement company. The query is supposed to return daily promo sales f...

Data Manipulation (SQL/Python)SQLDebugging
14
2
190 people solved
Dec 15, 2025
Marshall Wace logo
Marshall Wace
Medium
Software Engineer

Find users with multi-country successful logins

Given a table login_attempts with columns: user_id (TEXT), timestamp (TIMESTAMP), status (TEXT), and country (TEXT), write an SQL query to return the ...

Data Manipulation (SQL/Python)SQL
19
0
144 people solved
Aug 13, 2025
LinkedIn logo
LinkedIn
Easy
Data Scientist Locked

Write SQL for rankings, state, and aggregations

This question evaluates a candidate's competency in SQL data manipulation, covering ranking/top-N queries, aggregations and percentage calculations, t...

Data Manipulation (SQL/Python)SQL
14
0
99 people solved
Feb 21, 2026
Zoox logo
Zoox
Medium
Data Engineer

Write SQL revenue and anomaly queries

You are given two tables. Table: transactions | Column | Type | Description | |---|---|---| | transaction_id | int | Unique identifier for each transa...

Coding & AlgorithmsSQLData Quality & Validation
7
0
112 people solved
Apr 4, 2026
Amazon logo
AmazonGoogleInfosys

Also asked at Infosys, Meta, Microsoft, Bloomberg

Medium
Software Engineer

Choose the Most Prolific Reviewer and February’s Best-Rated Movie

Problem Return the available component rows in a column named results: first the name of the user who rated the most movies overall, breaking a count ...

Data Manipulation (SQL/Python)SQL
0
0
6 people solved
Google logo
GoogleAmazonBloomberg
Easy
Software Engineer

Count Each Teacher’s Distinct Subjects across Departments

Problem Return teacher_id and cnt, the number of different subject_id values taught by that teacher. Teaching the same subject in several departments ...

Data Manipulation (SQL/Python)SQL
0
0
7 people solved
Wayfair logo
Wayfair
Easy
Data Scientist

Solve SQL and Python OA tasks

Complete the following two online-assessment tasks. Task A — SQL You are given two tables: customer - customer_id INT - customer_name VARCHAR - purcha...

Data Manipulation (SQL/Python)SQLPandas & Python Data
10
1
113 people solved
Feb 16, 2026
IBM logo
IBM
Easy
Data Scientist

Write SQL to compute max and min marks

Tables marks | column | type | notes | |---|---|---| | student_id | INT | primary key | | marks | INT | not null | Task Write a SQL query that returns...

Data Manipulation (SQL/Python)SQL
12
1
157 people solved
Oct 3, 2025
Meta logo
Meta
Medium
Data Scientist

Count unconnected posts and reactions

You are analyzing a newly launched feed feature intended to improve engagement by showing more unconnected content. Assume the following tables: - pos...

Data Manipulation (SQL/Python)SQL
27
2
253 people solved
Apr 5, 2026
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