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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k 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
Gemini logo
Gemini
Medium
Data Scientist

Lead a cross-team fraud incident response

Describe a specific time you led a high-severity ACH fraud incident from detection to resolution. Include: (1) the first on-call signal you saw, (2) t...

Behavioral & Leadership
2
0
37 people solved
Oct 13, 2025
Wayfair logo
Wayfair
Medium
Software Engineer

Design a Song-Recognition Service and High-Volume Ingestion

Design a service that identifies a song from a recording, similar in purpose to Shazam. Part 1 — Recognize a recording Explain the core recognition ap...

System DesignSearch & Feed SystemsData Ingestion & CDC
1
0
12 people solved
Aug 11, 2025
Arista logo
Arista
Hard
Software EngineerNew Grad

Implement and Defend a Generic C++ Stack

Implement and Defend a Generic C++ Stack Implement a dynamically growing generic stack in C++ and then defend its object-lifetime and call-semantics c...

Software Engineering Fundamentals
4
0
40 people solved
Oct 7, 2025
Meta logo
Meta
Easy
Data Scientist

Quantify base-rate dilution in CTR

Weighted-Average CTR and Volume Requirements You are assessing the impact of introducing a new high-CTR event notification into an existing stream of ...

Statistics & Math
3
0
37 people solved
Oct 13, 2025
TikTok logo
TikTok
Hard
Data Scientist

Drive product decisions with causal product sense

Experimenting on a New Paywall with Likely Spillovers Context You are designing an experiment to evaluate a new paywall on a social/content app where ...

Analytics & Experimentation
8
0
76 people solved
Oct 13, 2025
Metropolis logo
Metropolis
Medium
Software Engineer

Explain how you use AI tools in development

You’re asked about your AI experience in day-to-day software development: - What AI-assisted development tools have you used (e.g., code completion, c...

Software Engineering FundamentalsLLM Applications
7
0
73 people solved
Feb 12, 2026
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
4
0
42 people solved
Feb 3, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Design and benchmark optimized inference pipelines

Design and benchmark optimized inference pipelines Accelerating PyTorch Inference: TorchDynamo, Techniques, and Benchmark Design Context You are asked...

ML System Design
7
0
92 people solved
Jul 15, 2025
Carvana logo
Carvana
Easy
Software Engineer

Spell Out a Nonnegative Integer

Given a nonnegative integer, return its English words representation. Implement a function that handles numbers from 0 through 2,147,483,647 inclusive...

Coding & Algorithms
1
0
18 people solved
Apr 26, 2026
Oracle logo
Oracle
Medium
Software Engineer

Parse logs and query by time

Implement a parser that converts raw log lines into structured records with fields {timestamp, level, message}. Build an API to support: (a) insert(lo...

Data Manipulation (SQL/Python)
3
0
26 people solved
Aug 7, 2025
Meta logo
Meta
Hard
Data Scientist

Determine Key Metrics and Design A/B Test for Ad Ranking

Determine Key Metrics and Design A/B Test for Ad Ranking Experiment Design: Replacing Rule-Based Ad Ranking with a Recommender Context You are launchi...

Analytics & Experimentation
7
0
55 people solved
Aug 4, 2025
Amazon logo
Amazon
Medium
Software Engineer

Find longest common contiguous subarray

Given two integer arrays A and B, find the length of the longest contiguous subarray that appears in both arrays. If multiple exist, return any one pa...

Coding & Algorithms
6
0
56 people solved
Sep 6, 2025
Amazon logo
Amazon
Hard
Data Scientist

Measure PMF for Alexa Shopping

Define and Measure Product–Market Fit (PMF) for Alexa Shopping Context You are designing a measurement plan to assess PMF for Alexa Shopping, where cu...

Analytics & Experimentation
3
0
40 people solved
Oct 13, 2025
Hard
Data Scientist

Design metrics and experiment

Context You are the data scientist designing success metrics and an experiment for a new subscriber-only feature in a consumer subscription product (e...

Analytics & Experimentation
3
0
41 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Design a better water bottle and test it

Propose 10 mutually exclusive design improvements for a commuter-focused reusable water bottle (e.g., insulation, grip, cap mechanism, filter, materia...

Analytics & Experimentation
3
0
39 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer

Differentiate virtual and pure virtual functions

Differentiate virtual and pure virtual functions In C++, what is the difference between a virtual function and a pure virtual function? Provide syntax...

Coding & Algorithms
6
0
53 people solved
Aug 8, 2025
NVIDIA logo
NVIDIA
Hard
Software Engineer

Explain ML framework trends

Explain ML framework trends ML Framework Trends, Compilation Pipeline to GPU, and Hardware-Aware Deployment Context You are asked to explain how moder...

ML System Design
3
0
54 people solved
Aug 4, 2025
Uber logo
Uber
Hard
Software Engineer

Maximize stock profit with one or two trades

You are given an array prices where prices[i] is the price of a given stock on day i (0-indexed). You want to maximize your profit by choosing when to...

Coding & AlgorithmsDynamic Programming
5
0
91 people solved
Nov 17, 2025
Uber logo
Uber
Hard
Software Engineer Locked

Solve jump maximization and palindromic path queries

This pair of problems evaluates algorithmic problem-solving skills: the first assesses array-based path optimization and stateful score maximization u...

Coding & AlgorithmsDynamic ProgrammingTrees
10
0
94 people solved
Jan 8, 2026
PayPal logo
PayPal
Hard
Data Scientist

Define Success with Contact Syncing for Growth and Evaluation

Define Success with Contact Syncing for Growth and Evaluation Using "% of users with contacts synced" as a growth driver Context You are a data scient...

Analytics & Experimentation
6
0
55 people solved
Aug 4, 2025
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