Software Engineer Software Engineering Fundamentals Interview Questions
Practice 524 real Software Engineering Fundamentals interview questions for Software Engineer roles. From companies including Amazon, Google, Bitkernel, Apple, DoorDash.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Design a Rule Evaluation Engine for Spending Policy Violations
Design an extensible rule-evaluation engine for a corporate spending product. Employees submit expenses, and managers choose policies that flag expens...
Design a Space-Efficient Versioned Recipe Shopping Cart
Design a Space-Efficient Versioned Recipe Shopping Cart Design an in-memory shopping cart for a cooking app. Each recipe has an ID and a list of ingre...
Implement a Rolling-Window Rate Limiter
Implement a Rolling-Window Rate Limiter Implement an in-memory rate limiter that accepts at most limit requests in any rolling interval of window_seco...
Design a Multi-Producer Multi-Consumer Circular Buffer
Design a Multi-Producer Multi-Consumer Circular Buffer Design a fixed-capacity circular buffer shared by multiple producer and consumer threads. Produ...
Design a Cash Register with Inventory and Profit Tracking
Design a Cash Register with Inventory and Profit Tracking Design an object-oriented cash-register system that manages inventory, completes sales, and ...
Index a CSV Movie Catalog for Fast Year-Range Queries
Index a CSV Movie Catalog for Fast Year-Range Queries Design a class that loads a CSV movie catalog once and then answers frequent year-range filters ...
Build a Crash-Consistent Single-Server Key-Value Store
Build a Crash-Consistent Single-Server Key-Value Store Implement and explain a key-value store that runs in one server process and persists byte-strin...
Design Prefix-Aware Deduplication for Homepage Content Rows
Design Prefix-Aware Deduplication for Homepage Content Rows A homepage contains ordered rows of content IDs. Each row has its own ordered candidate li...
Select Maximum Call Stacks Across Threads
You receive a collection of sampled call stacks. Each sample contains a threadId and an ordered list of frames from root to leaf. Design an algorithm ...
Extend a Banking Interface with Scheduled Payments and Account Merges
Extend a Banking Interface with Scheduled Payments and Account Merges You maintain an in-memory banking service whose public interface already support...
Clarify and Design Social-Graph Milestones
Clarify and Design Social-Graph Milestones An interview exercise progresses through a social graph with snapshots, a milestone for retrieving follower...
Implement a Stateful Chatter Message Store
Implement a Stateful Chatter Message Store Design a Chatter class that can load multiple ordered batches of messages, save its current messages, retur...
Count Machines and Recover a Distributed Tree Topology
Count Machines and Recover a Distributed Tree Topology A cluster's machines form a rooted tree. Design a protocol that returns the number of machines ...
Design a Cloud-Provider Upload Adapter
Design a Cloud-Provider Upload Adapter Design a small class layer that lets a backend initiate direct uploads through different cloud storage provider...
Debug Tokenization and Detokenization
Debug Tokenization and Detokenization The source reports a debugging exercise with buggy tokenization and detokenization functions but does not includ...
Model a Turn-Based Cats and Rabbits Board Game
Model a Turn-Based Cats and Rabbits Board Game Design the object model and move-validation flow for a two-player game on a 7 x 7 board. Each player st...
Design Blackjack Hands, Splits, and a Multi-Deck Shoe
Design Blackjack Hands, Splits, and a Multi-Deck Shoe Design the core object model for a blackjack game. A player may split two equal-valued cards, pr...
Debug Python LRU Cache-Key Construction
Debug Python LRU Cache-Key Construction The source reports a Python LRU-cache bug in key construction from args and **kwargs but does not provide the ...
Build a Resilient Chain of Clue-Driven HTTP Requests
Build a Resilient Chain of Clue-Driven HTTP Requests Implement or design a client that starts from one URL and follows a chain of HTTP responses. A su...
Design a Durable DAG Workflow for Order Refunds
Design a Durable DAG Workflow for Order Refunds An order that times out may need a refund. You are given a directed acyclic graph of refund steps and ...