Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.2k

Companies

569

Updated

10.14.2026

12.2k Questions 569 Companies10.14.2026

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

Snowflake

Easy

Software Engineer Locked

Schedule prerequisite classes with retakes

This question evaluates competency in graph algorithms, dependency resolution, stateful scheduling, and robust error handling within the Coding & Algo...

Coding & AlgorithmsGraphs

Design an in-memory cloud storage system

Design an in-memory cloud storage system In-Memory Cloud Storage: Files, Discovery, Users, and Compression Context: Design an in-memory storage librar...

System DesignLow-Level Design (OOP)

Merge four CSVs locally, robustly and efficiently

You receive four CSV files that must be merged locally on a laptop with 8 GB RAM, without relying on cloud services: - products.csv: product_id, categ...

Data Manipulation (SQL/Python)Data Cleaning & WranglingData Quality & Validation

Implement LRU cache and prime products array

You are given two separate coding tasks. Task 1: Implement an LRU cache Implement an in-memory cache with a fixed capacity that evicts the least recen...

Coding & AlgorithmsData Structure DesignBacktracking & Recursion

Find LCA in a N-ary tree via DFS

You are given the root of a rooted N-ary tree (each node can have zero or more children) and two distinct nodes p and q that belong to the tree. Desig...

Coding & AlgorithmsTreesBacktracking & Recursion

The Most Comprehensive Amazon PM Questions

Behavioral & Leadership Interview Prompt Set: Amazon Product Manager Onsite Prepare for a Product Manager onsite behavioral interview using Amazon-sty...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making

Solve word segmentation and React palindrome validation

Part A — String segmentation: Given a non-empty string s and a dictionary of valid words, design an algorithm to determine whether s can be segmented ...

Coding & AlgorithmsDynamic ProgrammingBacktracking & Recursion

Implement a match-3 board resolver

Question Implement a match-3 board resolver (the core loop of a "candy crush"-style game). You are given an m×n grid of cells. Each cell holds a value...

Compute Moderation View Metrics

Question You are working on a content moderation analytics problem. You have two tables. Table 1: content_views (one row per user / post / day) - user...

Data Manipulation (SQL/Python)SQLMetrics & KPIs

Make Cache Fetch Thread-Safe and Single-Flight

Make Cache Fetch Thread-Safe and Single-Flight A TTL cache adds fetch(key, loader, ttl): return a valid cached value immediately; otherwise call the l...

Software Engineering Fundamentals

Perform EDA and diagnose data quality

Given a tabular dataset loaded into a pandas DataFrame, write code to perform exploratory data analysis end-to-end: inspect and report column data typ...

Data Manipulation (SQL/Python)

Software Engineer Locked

Present and Defend Recent Research on AI Agents

Present a recent research project from problem framing through evidence, limitations, and your individual contribution. Then make a testable connectio...

Decode an anagram sentence using vocabulary constraints

You are given: - vocab: a list of lowercase words (the "dictionary") - s: a string containing space-separated scrambled words Each scrambled word in s...

Coding & AlgorithmsArrays & StringsSorting

139 people solved

Mar 9, 2026

Evaluate Marketing Campaign's Click-Through Rate Effectiveness

Evaluate Marketing Campaign's Click-Through Rate Effectiveness Scenario A campaign currently shows a click-through rate (CTR) of 4.2%. Leadership asks...

Find smallest N for 5-and-21 sums

You are given two positive integers: 5 and 21. We say a positive integer x is representable if it can be written in the form \[ x = 5a + 21b \] for so...

Software Engineer II Locked

Distinguish AI Skills, Agents, LangChain, and LangGraph

Distinguish bounded AI skills from autonomous agents and compare LangChain with LangGraph through workflow control, durable state, recovery, permissio...

Optimize CUDA GEMM with tiling and coalescing

CUDA Execution Model, Memory Hierarchy, and GEMM Kernel Design You are interviewing for a Data Scientist / GPU-software role at NVIDIA. The interviewe...

Coding & AlgorithmsGPU Programming

Analyze document collaboration from CSV logs

You are given two CSV files exported from a document collaboration product. Data 1) doc_access.csv Each row represents a user accessing (viewing/editi...

Data Manipulation (SQL/Python)

Software EngineerSenior+ Locked

Can You Reach the Last Index?

This question evaluates a candidate's understanding of array traversal and reachability in sequences of jumps, along with the ability to reason about ...

Coding & AlgorithmsGreedy

Software Engineer Locked

Design a CI/CD system with live log streaming

This question evaluates a candidate's ability to design scalable CI/CD architectures including shell-script job orchestration, DAG-aware scheduling, r...

System DesignJob Scheduling & WorkflowsReal-Time Systems

288 people solved

Dec 15, 2025

Tech Interview Questions

Schedule prerequisite classes with retakes

Design an in-memory cloud storage system

Merge four CSVs locally, robustly and efficiently

Implement LRU cache and prime products array

Find LCA in a N-ary tree via DFS

The Most Comprehensive Amazon PM Questions

Solve word segmentation and React palindrome validation

Implement a match-3 board resolver

Compute Moderation View Metrics

Make Cache Fetch Thread-Safe and Single-Flight

Perform EDA and diagnose data quality

Present and Defend Recent Research on AI Agents

Decode an anagram sentence using vocabulary constraints

Evaluate Marketing Campaign's Click-Through Rate Effectiveness

Find smallest N for 5-and-21 sums

Distinguish AI Skills, Agents, LangChain, and LangGraph

Optimize CUDA GEMM with tiling and coalescing

Analyze document collaboration from CSV logs

Can You Reach the Last Index?

Design a CI/CD system with live log streaming

Choose your next challenge

Blind 75

ML System Design

System Design Interview