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

"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

Point72

Medium

Quantitative Researcher

Solve Three Probability Models

Solve Three Probability Models Solve three independent probability questions. Show the sample space or stochastic assumptions in each part and give an...

Machine Learning Engineer Locked

Clean OCR data and build an LLM dataset

This question evaluates competency in OCR data cleaning and normalization, dataset engineering for LLM fine-tuning, quality filtering, and evaluation ...

Machine LearningData Cleaning & WranglingAnnotation & Label Quality

How would you choose between shows?

You are a data scientist at a streaming company similar to Netflix or Hulu. Leadership wants a recommendation on whether to renew an existing series o...

Analytics & ExperimentationBusiness Case AnalysisCausal Inference

Implement LRU cache with O(1) ops

Implement LRU cache with O(1) ops Design and implement a fixed-capacity cache supporting get(key) -> value and put(key, value) in O( 1) average time. ...

Route HTTP requests to pods in a cluster

In a Docker/Kubernetes-like container cluster running multiple replicas (pods) of a service, explain how an incoming HTTP request reaches a specific p...

Supermarket Chain Product Design for an Underserved Niche Shopper Segment

You are a product manager at a large supermarket chain; use Safeway as the concrete example. Your task is to build a product that serves niche markets...

Product Design & StrategyProduct SenseMetrics & KPIs

Determine Conditions for Multiplying Event Probabilities in Statistics

Determine Conditions for Multiplying Event Probabilities in Statistics Scenario You are modeling multiple, distinct risk events in Coinbase Wallet (e....

Design an ML inference orchestration platform

System Design: ML Inference Orchestration Platform Context You are designing a multi-tenant platform that exposes several ML models as independent ser...

Data Scientist Locked

Measure free-month promotion impact

This question evaluates causal inference and experimentation skills, including randomized design and estimand framing, metric and ROI attribution, han...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis

How would you explain PCA and SHAP?

Question You are interviewing for a Data Scientist role at Point72, a systematic / quantitative investment firm. The interviewer asks you to pick one ...

Machine LearningSupervised LearningFeature Engineering

Data Scientist Locked

Compute and interpret quantile loss vs RMSE

This question evaluates competency in probabilistic forecasting evaluation, including understanding of quantile (pinball) loss versus point-error metr...

Product Sense: Designing At-Home Video Streaming for Older Adults

Design a streaming video product aimed at older adults. `hint Seniors are not one user Older adults range from confident streamers to people who have ...

Product Design & StrategyAccessibility & Inclusive DesignProduct Sense

Clarify Ambiguous Requirements and Resolve Team Conflicts

Clarify Ambiguous Requirements and Resolve Team Conflicts Behavioral: Collaboration and Communication (Data Scientist, Onsite) Context You are intervi...

Behavioral & Leadership

Implement cache and gift assignment system

You are given two independent programming problems. --- Problem 1: Implement a bounded key–value cache Design a data structure that stores key–value p...

Coding & AlgorithmsData Structure Design

Software Engineer Locked

Take Initiative on a Customer Pain Point

Explain customer-focused initiative through direct evidence, a validated problem, a focused change, and confirmation that the customer experience impr...

Behavioral & LeadershipOwnership & ExecutionUser Research & Discovery

13 people solved

Sep 14, 2026

Build Friend Recommendations

This question evaluates proficiency with graph data structures, set operations, uniform random sampling, counting mutual connections, and deterministi...

Coding & Algorithms

86 people solved

Feb 8, 2026

Generate unique permutations with duplicates

Given an array of integers that may contain duplicates, generate all unique permutations. Ensure no duplicate permutations are returned even if some v...

Derive and compare core ML and RL methods

ML Fundamentals Technical Screen — Multi‑part Question Context: You are given a set of core machine learning topics to address rigorously. For each pa...

Machine LearningML FundamentalsReinforcement Learning

Design an elevator control system

Design the software for a multi-elevator control system in a high-rise building. Specify classes, scheduling algorithms for car assignments, handling ...

System DesignLow-Level Design (OOP)Simulation & State Machines

In-House Training vs Fine-Tuning vs Vendor Licensing for a Generative AI Feature

A product team is planning a new feature that runs on a generative AI model. Which factors decide whether you should train a model in-house, adapt an ...

Product / Decision MakingAI Product ManagementBusiness Case Analysis

8 people solved

Apr 26, 2026

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Tech Interview Questions

Solve Three Probability Models

Clean OCR data and build an LLM dataset

How would you choose between shows?

Implement LRU cache with O(1) ops

Route HTTP requests to pods in a cluster

Supermarket Chain Product Design for an Underserved Niche Shopper Segment

Determine Conditions for Multiplying Event Probabilities in Statistics

Design an ML inference orchestration platform

Measure free-month promotion impact

How would you explain PCA and SHAP?

Compute and interpret quantile loss vs RMSE

Product Sense: Designing At-Home Video Streaming for Older Adults

Clarify Ambiguous Requirements and Resolve Team Conflicts

Implement cache and gift assignment system

Take Initiative on a Customer Pain Point

Build Friend Recommendations

Generate unique permutations with duplicates

Derive and compare core ML and RL methods

Design an elevator control system

In-House Training vs Fine-Tuning vs Vendor Licensing for a Generative AI Feature

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Blind 75

ML System Design

System Design Interview