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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
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
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
xAI logo
xAI
Easy
Software Engineer

In-Memory Key-Value Database with Nested Transactions

In-Memory Key-Value Database with Nested Transactions Implement an in-memory key-value database that processes a sequence of commands and supports nes...

Coding & Algorithms
5
0
44 people solved
Jun 7, 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
Hard
Software Engineer

Design ride-hailing pricing with fairness and pooling

System Design: Ride-Hailing Pricing Engine Context Design a pricing engine for a ride-hailing platform that maximizes revenue while ensuring fairness ...

System Design
8
0
77 people solved
Sep 6, 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
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
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
Capital One logo
Capital One
Medium
Data Scientist

Quantify database bug cost/benefit

Bug Impact on Commission and Admin Costs (Jan–Mar) Context and Assumptions - The company earns commission revenue on user spend; an admin fee is a com...

Statistics & Math
8
0
65 people solved
Oct 13, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Define developer-centric usability metrics

Usability and Product Metrics Beyond Latency and Accuracy Context: In a technical screen focused on analytics and experimentation, propose how you wou...

Analytics & Experimentation
8
0
61 people solved
Sep 6, 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
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
Amazon logo
Amazon
Medium
Software Engineer

Determine string buildability from dictionary

Given a non-empty string s and a list of non-empty words dict, determine whether s can be formed by concatenating words from dict with unlimited reuse...

Coding & Algorithms
5
0
57 people solved
Sep 6, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Train with imbalanced sampled data

You are training a binary classifier on a very large dataset where the positive class is rare. Because the full dataset is too large to train on direc...

Machine Learning
9
0
76 people solved
Sep 5, 2025
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
Capital One logo
Capital One
Medium
Data Scientist

Design cloud product packaging and pricing strategy

Cloud-Service Pricing and Packaging Case Context You are the first PM at a cloud-service startup that is functionally at parity with competitors but h...

Behavioral & Leadership
3
0
50 people solved
Oct 13, 2025
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