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."
Develop test plan and TDD for word search
Design a Comprehensive Test Plan and TDD Workflow for Word-Search Functions Context and Assumptions We are testing two grid-based word search function...
Reason About CPU Microarchitecture and Simulator Design
Reason About CPU Microarchitecture and Simulator Design Answer the following systems questions for a modern out-of-order CPU. State architectural assu...
Compare RDBMS vs NoSQL and containers
Answer the following engineering fundamentals questions: 1) Compare RDBMS and NoSQL databases: key trade-offs (schema, transactions/ACID, consistency,...
Build an Auth0-protected MCP server
Hands-on OA: Build an MCP server secured by Auth0 JWTs You are asked to build a local HTTP service that implements a minimal MCP (Model Context Protoc...
Synchronize Shared Data Across Two Lists
Build a small mobile app with two list screens that fetch and display data. Some items may appear in both lists. Each item has at least: - id - title ...
Explain how to understand a large codebase fast
This question evaluates a candidate's ability to rapidly comprehend a large unfamiliar codebase, including identifying system behavior, mapping class-...
Build a responsive grid of fixed boxes
This question evaluates front-end layout and responsiveness skills including HTML/CSS and React component rendering, plus performance scaling for larg...
Explain Aurora-style internals: WAL, MVCC, replication, recovery
This question evaluates knowledge of database storage engine and distributed database internals, covering write-ahead logging, MVCC, replication model...
Explain inheritance, polymorphism, constructors, destructors
This question evaluates understanding of object-oriented programming concepts—specifically inheritance, polymorphism, constructors, and destructors—an...
Explain JS threading and useState vs useRef
Answer the following conceptual questions about JavaScript and React: 1. JavaScript and multithreading - How does JavaScript's execution model wo...
Demonstrate software engineering fundamentals
Demonstrate software engineering fundamentals Software Engineering Fundamentals: Git, Docker, Python Environments, and C++ Concepts Context: You are i...
Explain C++ Inline Semantics and Trade-Offs
Explain C++ Inline Semantics and Trade-Offs Explain what the C++ inline keyword means, how that differs from a compiler actually substituting a functi...
Assess Spring IoC, AOP, JDBC, Security
Assess Spring IoC, AOP, JDBC, Security Spring Framework — Multi-part Questions Context: You are building/maintaining a Spring-based service for a take...
Debug a cache incident end-to-end
Incident Scenario: Elevated Latency and Surge in Cache Misses You are paged for elevated tail latency and a spike in cache misses in a microservice th...
Add TTL to an LRU cache
Design an in-memory LRU cache and explain how to extend it with TTL support. Requirements: - get(key) returns the value if the key exists and has not ...
Design an OOD restaurant management system
Object-oriented design: Restaurant management system Design an object-oriented system for a dine-in restaurant that supports the following: Functional...
How do you assess database system stability?
You are responsible for a production database (or database platform) used by multiple services. How would you determine whether the database system is...
Explain CAP, indexing, locks, and logs
This question evaluates knowledge of distributed systems concepts (CAP theorem), database internals (index types and logging), and concurrency control...
Design a basic credit card system
This question evaluates object-oriented design and domain modeling skills, including class responsibilities, relationships, state management, transact...
Design object model for an elevator system
Design the object-oriented model for an elevator (lift) system in a multi-floor building that may have multiple elevators. The system should support: ...