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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
TikTok logo
TikTok
Medium
Data Scientist

Communicate technical impact under skeptical stakeholders

Reframing a Multi‑Team Project for a Technical‑Only Hiring Manager Context You are a data scientist in a technical screen. You need to present a multi...

Behavioral & Leadership
2
0
37 people solved
Oct 13, 2025
Uber logo
Uber
Hard
Software Engineer

Compare Paxos and Raft

Consensus over a Replicated Log: Paxos vs. Raft Context You are designing a fault-tolerant replicated log to back a stateful service (e.g., a key-valu...

System DesignConsensus & ReplicationConsistency & Availability
20
0
168 people solved
Sep 6, 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
66 people solved
Oct 13, 2025
ByteDance logo
ByteDance
Medium
Data Scientist

Walk through a data pipeline project

Describe a data pipeline project you built or owned end-to-end. In your answer, cover: - The business problem and downstream consumers (dashboards, mo...

Behavioral & LeadershipProject Deep DiveData Quality & Validation
11
0
86 people solved
Nov 12, 2025
Meta logo
Meta
Hard
Software Engineer Locked

Design an ad click tracking system

This question evaluates a candidate's ability to architect a high-throughput, reliable ad event tracking system, including event modeling, streaming a...

System Design
2
0
38 people solved
Oct 21, 2025
Uber logo
Uber
Hard
Data Scientist

Improve Estimated Time of Arrival for Uber Riders

Improve Estimated Time of Arrival for Uber Riders Scenario Ride-hailing platform: understanding and improving the Estimated Time of Arrival (ETA) show...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference
10
0
127 people solved
Aug 4, 2025
TikTok logo
TikTok
Easy
Software Engineer Locked

Solve three classic coding problems

These tasks evaluate algorithmic problem-solving, data structure mastery, and implementation skills within the Coding & Algorithms domain, touching on...

Coding & Algorithms
5
0
44 people solved
Dec 24, 2025
Uber logo
Uber
Hard
Software Engineer Locked

Determine Threshold-Constrained Connectivity

This question evaluates understanding of graph algorithms and constrained connectivity, testing skills in reasoning about weighted undirected graphs, ...

Coding & AlgorithmsGraphs
4
0
78 people solved
Jan 17, 2026
Uber logo
Uber
Medium
Data Scientist

Convert a PDF to a CDF

Given a continuous random variable X with probability density function f(x), write code or describe an algorithm to construct its cumulative distribut...

Coding & AlgorithmsProbability
12
0
91 people solved
Jan 14, 2026
Meta logo
Meta
Medium
Data Scientist

Write SQL for social feed metrics and ties

You are given the following schema (PostgreSQL) and sample rows. Assume UTC timestamps and that friendships are static over the sample window. users(u...

Data Manipulation (SQL/Python)
3
0
24 people solved
Oct 13, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Implement Binary Search for Policy Violation Logs

violations +--------+---------+---------------+ | pin_id | type | violation_date| +--------+---------+---------------+ | 0 | spam | 2022-01...

Data Manipulation (SQL/Python)
58
0
23 people solved
Jul 12, 2025
Medium
Machine Learning EngineerSenior+ Locked

Implement Linear Regression Training

This question evaluates understanding of linear regression, mean squared error loss, gradient computation, parameter updates, and proficiency with vec...

Coding & Algorithms
2
0
35 people solved
Mar 31, 2026
Amazon logo
Amazon
Medium
Software Engineer

Discuss open-source contributions and impact

Behavioral Prompt: Open-Source Contribution Walkthrough Context: Technical screen for a Software Engineer role. Provide a concise, structured walkthro...

Behavioral & Leadership
6
0
56 people solved
Sep 6, 2025
Kneron logo
Kneron
Medium
Software Engineer

Compute sum of minima with removals

Compute sum of minima with removals You are given an array weights[0..n-1] of positive integers representing product weights in a line. Repeat until n...

Coding & Algorithms
3
0
31 people solved
Jul 26, 2025
The Trade Desk logo
The Trade Desk
Medium
Software Engineer Locked

Design a Versioned Recipe Store with Search and Rollback

Prepare for a The Trade Desk software engineering interview question about design a versioned recipe store with search and rollback. The prompt highli...

Software Engineering Fundamentals
3
0
65 people solved
Jun 15, 2026
Uber logo
Uber
Medium
Software Engineer Locked

Find the First Unique Log

This question evaluates a candidate's ability to analyze and implement efficient data-processing and frequency-detection strategies on ordered string ...

Coding & Algorithms
3
0
55 people solved
Mar 4, 2026
Capital One logo
Capital One
Medium
Data Scientist

Assess Customer Value with Varied Contract Terms and Costs

Subscription Network Service: Customer Value and Contract Terms A subscription network-service provider wants to assess unit economics and portfolio i...

Analytics & Experimentation
111
0
365 people solved
Jul 12, 2025
Thumbtack logo
Thumbtack
Hard
Data Scientist

Design and evaluate an A/B test for launch

A/B Test Design: New Matching Model for a Two‑Sided Marketplace Context You are testing a new matching/ranking model that determines which providers a...

Analytics & Experimentation
8
0
75 people solved
Oct 13, 2025
Gemini logo
Gemini
Medium
Data Scientist

Detect k events in a sliding window

Implement an algorithm that, for each user, determines whether there exists a set of at least k ACH credit events from distinct device_ids within any ...

Coding & Algorithms
6
0
62 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate the Success of Instagram Checkout

Evaluating Instagram Checkout Instagram Checkout allows users to discover products, add to cart, pay, and manage post-purchase flow without leaving In...

Analytics & ExperimentationLaunch EvaluationBusiness Case Analysis
91
0
114 people solved
Jul 12, 2025
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