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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
Meta logo
Meta
Easy
Data Scientist

Determine Posterior Probability of Bad User Prediction

Posterior Probability for a Bad-Actor Classifier You are evaluating a binary classifier that flags bad actors among users. Given: - 5% of users are tr...

Statistics & Math
35
0
147 people solved
Jul 12, 2025
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Design a scalable coffee ordering notification system

This question evaluates a candidate's ability to design scalable, real-time distributed systems with emphasis on order lifecycle management, reliable ...

System DesignSystem Design FundamentalsMessaging & Event-Driven
9
0
152 people solved
Feb 12, 2026
TikTok logo
TikTok
Medium
Data Scientist

Explain motivations, background, and success metrics

Give a concise overview of your background in e‑commerce risk control (30–60 seconds). Then: (1) Why do you want to join our e‑commerce risk team spec...

Behavioral & Leadership
5
0
47 people solved
Oct 13, 2025
Freddie Mac logo
Freddie Mac
Medium
Data Scientist

Assess SQL cleaning, mapping, joins, keys, and DDL/DML

You inherit a small retail analytics warehouse. Use the schema and sample rows below to answer all parts. Schema and sample data (minimal rows shown):...

Data Manipulation (SQL/Python)
1
0
27 people solved
Oct 13, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Analyze TCP three-way handshake states

During TCP connection establishment (the three-way handshake), exactly one of the following statements is correct. Identify which one, and be prepared...

Software Engineering Fundamentals
3
0
48 people solved
Oct 24, 2025
Google logo
Google
Medium
Product Manager

Behavioral & Execution Scenarios

Product Manager Phone Screen: Behavioral and Execution Scenarios Provide concrete, role-relevant examples for each situation below. Focus on actions, ...

Behavioral & LeadershipOwnership & ExecutionPrioritization & Tradeoffs
15
0
91 people solved
Jul 4, 2025
Wayfair logo
Wayfair
Easy
Data Scientist Locked

Find top buyer in earliest 10-year window

This question evaluates proficiency in data manipulation and analytical querying with SQL/Python, emphasizing date-based windowing, join operations, a...

Data Manipulation (SQL/Python)
4
0
30 people solved
Feb 18, 2026
Kayak logo
Kayak
Medium
Product Manager

Leadership, Entrepreneurship & Cross-Functional Collaboration

Behavioral PM Onsite: Leadership, Entrepreneurship, and Cross-Functional Collaboration You are interviewing for a Product Manager role in a consumer t...

Behavioral & Leadership
18
0
109 people solved
Jul 4, 2025
Apple logo
Apple
Medium
Software Engineer

Implement deep clone for complex objects

Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...

Coding & AlgorithmsJavaScript & TypeScriptGraphs
12
0
121 people solved
Sep 6, 2025
Lyft logo
Lyft
Medium
Product Manager

Home Depot Plant-Growth Product Design

Home Depot Plant-Growth Product Design You are a Product Manager at Home Depot. Design a product that helps customers successfully grow their own plan...

Product / Decision Making
14
0
78 people solved
Jul 4, 2025
Capital One logo
Capital One
Medium
Data Scientist

Design metrics and an A/B test for an app

Pick a consumer digital app you love. Assume the interviewer knows nothing about it. 1) Explain the product, core jobs-to-be-done, target audience seg...

Analytics & Experimentation
5
0
67 people solved
Oct 13, 2025
Apple logo
Apple
Medium
Software Engineer

Improve chip performance without process advances

Assume you are working on a digital chip, but the semiconductor process node and basic device technology are fixed: there is no new, faster process an...

Software Engineering Fundamentals
10
0
71 people solved
Dec 8, 2025
Twitch logo
Twitch
Medium
Data Scientist

Solve advanced SQL for streaming analytics

You are given minute-level streaming telemetry. Each row in minute_streamed represents one minute during which a streamer was live; each row in minute...

Data Manipulation (SQL/Python)
0
0
18 people solved
Oct 13, 2025
SoFi logo
SoFi
Medium
Software Engineer

Determine reachability and minimum jumps

Determine reachability and minimum jumps Given an array of non-negative integers nums of length n, where nums[i] is the maximum number of steps you ca...

Coding & AlgorithmsGreedyArrays & Strings
8
0
91 people solved
Aug 7, 2025
Snowflake logo
Snowflake
Hard
Data Scientist

Implement DFS with cycle detection and topo order

Implement DFS (recursive and iterative) with topo sort, cycle detection, and timestamps You are given a directed graph G with N nodes labeled 1..N and...

Coding & AlgorithmsGraphsStacks & Queues
12
0
102 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Software Engineer

Design top-K frequency structure

Design an in-memory data structure that supports: add(x) to observe an item, inc(x) to increment its frequency, dec(x) to decrement (deleting when zer...

Coding & Algorithms
7
0
74 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Solve maze tasks and compute shortest routes

This multi-part question evaluates proficiency in grid-based pathfinding and shortest-path reasoning, debugging and incremental code extension, handli...

Coding & AlgorithmsGrids & MatricesGraphs
6
0
87 people solved
Feb 11, 2026
Capital One logo
Capital One
Medium
Data Scientist

Evaluate Renewable Investment Factors for Government Electricity Supply

Evaluate Renewable Investment Factors for Government Electricity Supply You are the CEO of Energy One, an incumbent utility evaluating whether to inve...

Behavioral & LeadershipBusiness Case Analysis
106
0
233 people solved
Jul 12, 2025
Roku logo
Roku
Medium
Data Scientist

Measure Speaker's Impact Using Propensity Score Matching

Measure a Speaker's Impact Using Propensity Score Matching A company releases an optional smart speaker. Some users purchase and link the speaker to t...

Analytics & ExperimentationCausal Inference
45
0
183 people solved
Jul 12, 2025
xAI logo
xAI
Hard
Machine Learning Engineer

Constant-Time Insert, Remove, and Uniform Random Sampling

A data-sampling service maintains a dynamically changing pool of integer example IDs. Examples are continuously added and retired, and the service mus...

Coding & Algorithms
2
0
27 people solved
May 30, 2025
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