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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Medium
Data Scientist Locked

Write SQL for CTR and Revenue

This question evaluates proficiency in SQL-based data manipulation and analytics, focusing on joins across event and reference tables, time-of-day buc...

Data Manipulation (SQL/Python)SQL
14
1
97 people solved
Mar 12, 2026
Google logo
Google
Hard
Software Engineer Locked

Find Maximum Envelope Nesting

This question evaluates algorithmic problem-solving skills, particularly reasoning about multi-dimensional ordering, sequence optimization, and time-c...

Coding & AlgorithmsDynamic ProgrammingSorting
8
1
117 people solved
Mar 18, 2026
Google logo
Google
Medium
Data Scientist

Implement Sampling and Minimize Loss in Numerical Coding

Scenario Numerical coding challenges on sampling and loss minimization. Question a) Implement functions to sample from truncated normal distributions ...

Coding & Algorithms
28
0
143 people solved
Jul 12, 2025
Optiver logo
Optiver
Easy
Software Engineer

Compute permutations with repeated letters

Counting Strings with Repeated Characters Problem Given two nonnegative integers m and n, how many distinct strings can be formed that contain exactly...

Statistics & MathMath & Number Theory
14
1
134 people solved
Aug 13, 2025
Capital One logo
Capital One
Medium
Data ScientistSenior+

Design a reproducible data pipeline for modeling

You receive raw clickstream events and a user table. Build a reproducible daily pipeline that outputs user-day features for modeling. It must be idemp...

Data Manipulation (SQL/Python)
1
0
25 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Optimize Travel Costs and Generate Rotational Symmetric Numbers

Scenario You are building a travel-search engine that must 1) show customers the cheapest round-trip they can book if departure and return prices vary...

Coding & Algorithms
11
0
83 people solved
Aug 4, 2025
StubHub logo
StubHub
Medium
Software Engineer Locked

Design a Global Marketing Email Platform

This question evaluates a candidate's ability to design a scalable, reliable distributed system for global marketing email delivery, encompassing time...

System DesignJob Scheduling & WorkflowsMessaging & Event-Driven
20
0
187 people solved
Jan 21, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Describe Work Beyond Your Formal Responsibilities

Prepare a behavioral example about taking useful action beyond your formal responsibilities without bypassing owners or abandoning existing commitment...

Behavioral & Leadership
7
0
55 people solved
Jul 7, 2026
Lyft logo
Lyft
Hard
Data Scientist

Develop Dynamic-Pricing Algorithm for Lyft Balancing Key Factors

Develop a Dynamic-Pricing Algorithm for Lyft You are tasked with building a dynamic-pricing system for Lyft, a two-sided ride-hailing marketplace. The...

Machine LearningBusiness Case AnalysisML System Design
43
0
205 people solved
Jul 12, 2025
Baseten logo
Baseten
Medium
Software Engineer

One-pass S-expression parser with nested lists and precise error handling

Implement a parser for a simplified S-expression language. The exercise has three parts that build on one another. The parser must read the input sequ...

Software Engineering FundamentalsParsing & InterpretersBacktracking & Recursion
0
0
2 people solved
Aug 4, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Infer an Unknown Alphabet Order

You are given a list of words that is already sorted according to an unknown alphabet. Derive one valid ordering of the characters in that alphabet. R...

Coding & Algorithms
3
0
51 people solved
Apr 8, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Explain iOS ARC and avoid retain cycles

iOS Memory Management (ARC) You have 10 minutes to explain iOS memory management under ARC. Cover the following: 1. How ARC manages object lifetime (w...

Software Engineering FundamentalsiOSMemory Management
11
0
127 people solved
Feb 11, 2026
Meta logo
Meta
Medium
Data Scientist

Reflect on Conflict Resolution and Key Learnings

Reflect on Conflict Resolution and Key Learnings Behavioral Interview Prompts (Data Scientist, Onsite) Instructions Use the STAR framework (Situation,...

Behavioral & Leadership
5
0
45 people solved
Aug 4, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Find all unique triplets summing to zero

Problem Given an integer array nums, return all unique triplets [nums[i], nums[j], nums[k]] such that: - i, j, and k are distinct indices (i != j != k...

Coding & Algorithms
7
0
69 people solved
Oct 23, 2025
Gusto logo
Gusto
Medium
Data Scientist

How do you test two variants vs control?

You ran an A/B/n experiment with 1 control and 2 treatment variants. The primary metric is conversion rate (each user either converts or not within th...

Analytics & ExperimentationExperiment Analysis & ReadoutHypothesis Testing
13
0
115 people solved
Nov 30, 2025
Uber logo
Uber
Medium
Data Scientist

Compare Two Coin Proportions

You are given results from two independent coin-toss experiments: - Coin A was tossed 100 times and landed heads 40 times. - Coin B was tossed 1,000 t...

Statistics & MathHypothesis TestingSampling & Estimation
16
0
144 people solved
Mar 28, 2026
Coinbase logo
Coinbase
Medium
Software Engineer

Implement banking ops: transfer, top-k, cashback, merge

Design and implement an in-memory banking system that supports: ( 1) CreateAccount(id, initialBalance) and Transfer(fromId, toId, amount) with validat...

Coding & AlgorithmsLow-Level Design (OOP)Distributed Transactions & Idempotency
20
0
177 people solved
Sep 6, 2025
Twitch logo
Twitch
Medium
Software Engineer

Solve four design-leaning coding problems

You are given four independent interview-style coding tasks. For each task, implement the requested function/class with clear inputs/outputs and reaso...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
26
0
197 people solved
Oct 26, 2025
MathWorks logo
MathWorks
Easy
Software Engineer

Minimize shortest path by adding weight-1 edges

You are given a weighted directed graph with nodes labeled 1..n. The existing edges are described by three arrays of equal length m: - from[i]: start ...

Coding & Algorithms
4
0
65 people solved
Mar 1, 2026
Google logo
Google
Medium
Software Engineer

Handle overwhelmed team as senior manager

Handle overwhelmed team as senior manager Behavioral: Leading an Overloaded Engineering Team Context You are a senior engineering leader. Your softwar...

Behavioral & Leadership
4
0
72 people solved
Aug 8, 2025
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