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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k 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
Salesforce logo
Salesforce
Medium
Software Engineer

Explain background and Salesforce motivation

Explain background and Salesforce motivation Behavioral: Background, Motivation, and Team Fit (Salesforce, GCP-Focused) Prompt Provide a concise, stru...

Behavioral & LeadershipMotivation & FitProject Deep Dive
18
0
144 people solved
Jul 31, 2025
Maven Securities logo
Maven Securities
Medium
Data Scientist

Compute probability of random arithmetic progression triple

You have the integers from 1 to 30 inclusive. You randomly choose 3 distinct numbers without replacement, and all 3-element subsets are equally likely...

Coding & Algorithms
5
0
98 people solved
Nov 20, 2025
Uber logo
Uber
Medium
Data Scientist Locked

Evaluate UberEATS priority delivery and membership

This question evaluates a data scientist's competency in pricing strategy, marketplace economics, causal experimentation, metric selection, and estima...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis
8
0
86 people solved
Feb 28, 2026
Meta logo
Meta
Medium
Product Manager

Behavioral: how you brought clarity to an ambiguous problem and moved it forward

In a behavioral round of a product manager interview at Meta, you are asked to describe a time you faced a problem that was ambiguous. Walk through th...

Behavioral & LeadershipAmbiguity & Decision Making
1
0
13 people solved
Jun 7, 2025
SoFi logo
SoFi
Medium
Software Engineer

Explain GC, singleton, and OOP principles

Answer the following Java/software-engineering fundamentals questions: 1. How does Java garbage collection work at a high level (generational GC, mark...

Software Engineering FundamentalsMemory ManagementLow-Level Design (OOP)
12
0
136 people solved
Feb 4, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Return k smallest elements using heap

Given an unsorted array nums of up to 1,000,000 integers and an integer k (1 <= k <= nums.length), return the k smallest elements in ascending order. ...

Coding & Algorithms
10
0
94 people solved
Sep 6, 2025
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
44
0
218 people solved
Jul 12, 2025
Google logo
Google
Medium
Software Engineer Locked

Answer range queries for alternating parity subarrays

This question evaluates understanding of array manipulation, parity properties, efficient range-query processing, and preprocessing techniques for han...

Coding & AlgorithmsArrays & Strings
7
0
119 people solved
Jan 6, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Explain overfitting, regularization, and LLM techniques

This question evaluates understanding of model generalization (overfitting vs underfitting), regularization methods (L1 vs L2), modern LLM techniques ...

Machine LearningML FundamentalsAI Agents
10
0
152 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Software Engineer

Merge two sorted arrays in-place

Merge two sorted arrays in-place You are given two sorted integer arrays nums1 and nums2, both sorted in non-decreasing order. - nums1 has length m + ...

Coding & Algorithms
9
0
108 people solved
Jul 15, 2025
Meta logo
Meta
Medium
Data Scientist

Design and analyze A/B test with interference

You must ship a News Feed ranking change where content produced by treated users can be seen by control users, creating interference and within-user c...

Analytics & Experimentation
6
0
88 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Convince Stakeholders: Prioritize Data Science Projects Effectively

Convince Stakeholders: Prioritize Data Science Projects Effectively Behavioral: Influencing Stakeholders and Prioritizing Work Context As a data scien...

Behavioral & LeadershipLeadership & InfluenceCommunication & Stakeholders
17
0
120 people solved
Aug 4, 2025
Netflix logo
Netflix
Medium
Data Scientist

Identify Longest Consecutive Incrementing Watch-Time Sequence

Scenario A streaming platform records daily minutes watched per user and wants to identify engagement streaks. Question Given an unsorted integer arra...

Coding & Algorithms
24
0
126 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Software EngineerSenior+

Build a Mistral-powered RAG agent

Build a Minimal RAG Tool Using the Mistral API Context You have an API token and need to implement a small retrieval-augmented generation (RAG) tool i...

ML System Design
13
0
141 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Find minimum cycle cost per node

This question evaluates proficiency in graph algorithms and algorithmic optimization, specifically reasoning about weighted directed graphs, cycle cos...

Coding & AlgorithmsGraphs
10
0
111 people solved
Feb 11, 2026
Waymo logo
Waymo
Medium
Frontend EngineerSenior+ Locked

Filter Matching Subtrees from an N-Ary Tree

Filter an n-ary tree by removing every node whose value contains a substring along with its full descendant subtree. Validate the flat index represent...

Coding & Algorithms
6
0
50 people solved
May 11, 2026
Snapchat logo
Snapchat
Medium
Machine Learning EngineerNew Grad Locked

Design a Product Tagging Pipeline

This question evaluates applied machine learning system design, multi-modal modeling, data engineering, and production deployment competencies involve...

ML System Design
8
0
66 people solved
Feb 2, 2026
Capital One logo
Capital One
Medium
Data Scientist

Compute required output to recover 10% investment

Power Plant Profit Target and Capacity Feasibility Context You are evaluating a fossil-fuel power plant. The plant can sell all electricity it generat...

Statistics & Math
6
0
75 people solved
Oct 13, 2025
StackAdapt logo
StackAdapt
Easy
Software Engineer

Design a time-windowed key-value store

Implement a time-windowed key-value store ("Windowed Map") that receives key/value updates at irregular times and only keeps entries from the most rec...

Coding & AlgorithmsData Structure DesignStacks & Queues
15
0
199 people solved
Mar 4, 2025
Swiggy logo
Swiggy
Medium
Product Manager

Launch plan for a slower, non-urgent delivery tier in Swiggy Instamart

You are a product manager on Instamart, Swiggy's quick-commerce service that delivers groceries and household essentials within minutes from small nei...

Product Design & StrategyRequirements & Launch ExecutionExperiment Design (A/B Testing)
0
0
12 people solved
Nov 8, 2025
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