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

Lyft

Medium

Product Manager

Lyft Metric Investigation: Root-Causing a Sudden Jump in Cancelled Trips

You are a product manager at Lyft. Ride cancellations rose sharply this week compared with a normal week. What could explain the jump, and how would y...

Analytics & ExperimentationMetric Diagnostics

Applied Scientist Locked

Explain weight initialization methods and goals

This question evaluates a candidate's understanding of weight initialization in deep neural networks, assessing competencies in training dynamics such...

Design Data Quality and Observability Pipeline

Design a production data orchestration, data quality, and observability framework for batch and streaming data pipelines. Your design should address: ...

System DesignData Quality & ValidationWorkflow Orchestration

Navigate urgency, priorities, and conflict

Behavioral & Leadership: Ambiguity, Dependencies, and Execution Under Pressure You will describe one real project where you faced high ambiguity and c...

Behavioral & Leadership

Diagnose drop in shopper order acceptance

Question Marketplace diagnosis case. A grocery-delivery marketplace (Instacart-style) observes that on Sunday afternoon, the number of orders that sho...

Analytics & Experimentation

64 people solved

Oct 10, 2025

Design a recommendation system from scratch

This question evaluates expertise in recommender systems and related competencies including machine learning-based candidate generation and ranking, d...

System DesignRecommendation SystemsRanking Models

Count paths with prime-ending jumps

You are given an integer n representing the top of a staircase, where you start at step 0 and want to land exactly on step n. In one move, you may jum...

Coding & Algorithms

64 people solved

Jan 15, 2026

Find kth smallest pair sum with heaps

You are given two nondecreasing arrays A (length n) and B (length m) of non-negative integers and an integer k (1 <= k <= n*m). Return the k-th smalle...

Compute community ranges and town idle hours

You are given two in-memory datasets for a party-planning app. 1) PartyWindow: {partyId: string, startTime: ISO-8601 UTC datetime, endTime: ISO-8601 U...

Coding & AlgorithmsIntervals & SchedulingSorting

Contrast processes and threads

What are the differences between processes and threads? Compare memory isolation, resource ownership, scheduling, context-switch cost, inter-process c...

Coding & AlgorithmsOperating SystemsConcurrency

Go or No-Go on a Paid Agoda Membership for Frequent Travelers

You are a product manager at Agoda, the online travel booking company. Leadership is considering a paid subscription, working name "Agoda Prime". Shou...

Product Design & StrategyProduct StrategyGrowth & Monetization

Software Engineer Locked

Design an in-memory TODO list API

This question evaluates object-oriented design, API and data-modeling skills, including selection of in-memory data structures, performance considerat...

Software Engineering FundamentalsLow-Level Design (OOP)

Design long-tail search evaluation under label budget

Estimating ΔNDCG@10 With Limited Labels Under a Heavy-Tailed Query Mix You serve ~100M queries/day. Query frequencies follow a Pareto distribution wit...

Analytics & ExperimentationRanking ModelsSampling & Estimation

Data Scientist Locked

Forecast bikes available at a station

This question evaluates proficiency in time-series forecasting, feature engineering, handling temporal data splits, and incorporating operational cons...

Solve median extremes and segment flips

Solve median extremes and segment flips Part A — Sliding-window median extremes: - Input: an integer k (1 ≤ k ≤ n) and an array nums of length n. - Fo...

Data Scientist Locked

How should Uber evaluate lower ETA?

This question evaluates competency in metrics design, causal inference, and experiment strategy for two-sided marketplaces, including detecting and ad...

Analytics & Experimentation

Build a Recommendation System and Conversational Interface from Scratch

Build a Recommendation System and Conversational Interface from Scratch Design an initial recommendation system, then extend it with a chatbot that ca...

Implement Euclidean distance and k-nearest neighbors

You are working with points in an n-dimensional Euclidean space, where each point is represented as a list (or array) of numeric coordinates. Assume: ...

Software Engineer Locked

Design REST APIs for JSON file storage

This question evaluates system design and RESTful API skills for building JSON document storage, covering metadata modeling, concurrency control, auth...

System DesignAPI DesignFile & Media Storage

Sell GPUs to a retail CEO

Scenario: Pitching NVIDIA GPUs to Walmart’s CEO You are a data scientist preparing an executive-ready proposal to justify adopting NVIDIA GPUs across ...

Behavioral & LeadershipBusiness Case AnalysisCommunication & Stakeholders

118 people solved

Oct 13, 2025

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Tech Interview Questions

Lyft Metric Investigation: Root-Causing a Sudden Jump in Cancelled Trips

Explain weight initialization methods and goals

Design Data Quality and Observability Pipeline

Navigate urgency, priorities, and conflict

Diagnose drop in shopper order acceptance

Design a recommendation system from scratch

Count paths with prime-ending jumps

Find kth smallest pair sum with heaps

Compute community ranges and town idle hours

Contrast processes and threads

Go or No-Go on a Paid Agoda Membership for Frequent Travelers

Design an in-memory TODO list API

Design long-tail search evaluation under label budget

Forecast bikes available at a station

Solve median extremes and segment flips

How should Uber evaluate lower ETA?

Build a Recommendation System and Conversational Interface from Scratch

Implement Euclidean distance and k-nearest neighbors

Design REST APIs for JSON file storage

Sell GPUs to a retail CEO

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