Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.1k

Companies

579

Updated

10.10.2026

12.1k Questions 579 Companies10.10.2026

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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

OneMain Financial

Hard

Data Scientist

Present a project to non-technical leaders

10–15 Minute Modeling Project Presentation (Mixed Stakeholders) Task Prepare a 10–15 minute presentation of a past modeling project for a mixed audien...

Behavioral & LeadershipCommunication & StakeholdersProject Deep Dive

Software Engineer Locked

Parse logs and count error codes

This question evaluates parsing and sanitizing structured text, extracting specific fields, and performing frequency aggregation of identifiers such a...

Coding & AlgorithmsParsing & Interpreters

Explain core ML concepts and metrics

You are interviewing for a Data Scientist role. Answer the following ML fundamentals questions clearly and concisely. Concepts 1. Explain the bias–var...

Machine LearningML FundamentalsModel Evaluation

Explain forward contracts and options

In a finance-focused technical interview, you are asked to explain two basic derivative instruments: 1. What is a forward contract? 2. What is an opti...

Software Engineering Fundamentals

Machine Learning Engineer

Find max min-plus-max over all subarrays

Find max min-plus-max over all subarrays You are given an array arr of n integers. A subarray is a contiguous non-empty segment of the array. For any ...

Compute max planes shot and session count

Problem 1: Max planes you can shoot before any lands You are given two equal-length arrays: - altitude[i]: the initial altitude of plane i (positive i...

Prioritize six improvements for a favorite app

Case Prompt: Product Thinking, Modeling, and Experimentation Choose one consumer mobile app you personally use weekly. 1. Propose exactly six concrete...

Behavioral & LeadershipProduct Design & ImprovementPrioritization & Tradeoffs

Implement lower_bound on unknown-size sorted array

Lower Bound in Unknown-Length Nondecreasing Array via API Setup You are given a non-decreasing integer array A of unknown length n. You cannot access ...

Implement 64-bit modular exponentiation safely

Implement a function to compute (a^b) mod m where 0 ≤ a,b < 2^61−1 and 1 ≤ m < 2^61−1 using only 64-bit operations without overflow. Provide implement...

Coding & AlgorithmsMath & Number TheoryBit Manipulation

Analyze Success Metrics and Diagnose Crypto Feature Issues

Analyze Success Metrics and Diagnose Crypto Feature Issues Post-Launch Evaluation: Crypto Trading Feature Context You are a Data Scientist evaluating ...

Analytics & Experimentation

Data ScientistNew Grad

Describe resolving a conflict with a teammate

You are interviewing for a Data Scientist PhD Summer Intern role. Tell me about a time you had a conflict with a teammate on a research or data/ML pro...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders

Data Scientist Locked

Reduce LLM hallucination and handle class imbalance

This question evaluates applied machine learning competencies including LLM safety and hallucination mitigation, retrieval-augmented generation and to...

Build a regression model for wind power output

Task: Snapshot Regression for Turbine-Level Power Prediction (Non–Time-Series) You are given turbine-level SCADA snapshots and concurrent weather data...

Software Engineer Locked

Solve String Addition and Expression Evaluation

This question evaluates string manipulation and parsing skills for numeric computation, covering addition of integers represented as character arrays ...

Determine max remainders and anagram after deletions

Part 1 (Array Remainders): Given an integer array A of length n with A[i] > 0. You may choose any integer array B of length n. Define C[i] = B[i] mod ...

Coding & Algorithms

62 people solved

Sep 6, 2025

Evaluate the Health of Facebook Groups

Group Health Metrics and Threaded Comments Experiment You are a Data Scientist working on a platform with Groups ranging from small hobby clubs to ver...

Analytics & Experimentation

Print the K-th non-empty line

Given a large UTF-8 text file, write a program that prints the K-th non-empty line. Do not load the whole file into memory. Specify how you handle fil...

Data Manipulation (SQL/Python)Operating SystemsProgramming Languages

Assess Cultural Fit and Motivation for Joining CloudTrucks

Assess Cultural Fit and Motivation for Joining CloudTrucks Behavioral Interview — Data Scientist Phone Screen (CloudTrucks) Scenario A recruiter is as...

Behavioral & Leadership

Evaluate and select K in K-means

K-means Clustering: Concepts, Initialization, Model Selection, Preprocessing, and Business Validation Context: You are clustering customer data with n...

Machine Learning

63 people solved

Oct 13, 2025

Implement, Debug, and Optimize a React Table

Implement, Debug, and Optimize a React Table React Table Component — Design, Implementation, and Performance Context: You are building a reusable Reac...

Software Engineering Fundamentals

79 people solved

Aug 1, 2025

Tech Interview Questions

Present a project to non-technical leaders

Parse logs and count error codes

Explain core ML concepts and metrics

Explain forward contracts and options

Find max min-plus-max over all subarrays

Compute max planes shot and session count

Prioritize six improvements for a favorite app

Implement lower_bound on unknown-size sorted array

Implement 64-bit modular exponentiation safely

Analyze Success Metrics and Diagnose Crypto Feature Issues

Describe resolving a conflict with a teammate

Reduce LLM hallucination and handle class imbalance

Build a regression model for wind power output

Solve String Addition and Expression Evaluation

Determine max remainders and anagram after deletions

Evaluate the Health of Facebook Groups

Print the K-th non-empty line

Assess Cultural Fit and Motivation for Joining CloudTrucks

Evaluate and select K in K-means

Implement, Debug, and Optimize a React Table

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