Software Engineer Software Engineering Fundamentals Interview Questions
Practice 284 real Software Engineering Fundamentals interview questions for Software Engineer roles. From companies including Amazon, Bitkernel, Apple, Google, Uber.
"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."
Review concurrent code quality
You are given a short code snippet during a pull-request review and asked to identify engineering issues and suggest improvements. The review focuses ...
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...
Explain Python and Web Basics
In a software engineering interview, explain the following fundamentals: 1. In Python, what are the differences between a list and a tuple? When would...
Implement a blog feed with fetching and state
You are building a simple Blog Posts page (React). Implement the UI and client-side logic in incremental steps. Data model Assume each post has at lea...
Answer Spring Boot and Thymeleaf engineering questions
Spring Boot + Thymeleaf (Engineering Questions) Answer the following interview questions with concrete debugging steps, best practices, and design cho...
Design automated regression tests for an API
Scenario A team is launching a new RESTful API (or a new version of an existing API). You are responsible for designing an automated regression test s...
Compare WebSocket, SSE, and long polling
You are building real-time features for a web application and the interviewer probes your networking fundamentals across several layers of the stack. ...
Explain HashMap Resizing Without Long Pauses
Explain how a hash map works internally. Cover how keys are mapped to buckets, how collisions are handled, and when the table decides to resize. Follo...
Explain auth, key rotation, secrets, and incident response
You are interviewing for a security-focused engineering role. Discuss how you would design and operate the following in a production microservices env...
Explain Aurora-style internals: WAL, MVCC, replication, recovery
Database Internals Deep Dive You are interviewing for a cloud database engine team (Aurora-like). Answer conceptually and with trade-offs. Questions 1...
Explain process vs thread and memory-sharing risks
You are asked about OS concurrency fundamentals. Prompt 1. What is the difference between a process and a thread? 2. Do processes and threads share me...
Explain Swift memory, value semantics, and GCD
Answer the following Swift/iOS fundamentals questions. A) GCD execution order + threads Assume the current thread is the main thread. Snippet 1 What i...
Explain storing files to disk with concurrency
You are working on the backend of a server that receives file uploads (for example, images or documents) from clients. You need to design and explain ...
Explain Core CS and Database Concepts
The interview included a fundamentals discussion covering topics like: - Explain common data structures and when you would choose arrays, linked lists...
Write SQL to sum city population by name
You have four relational tables: - country(country_id, name) - state(state_id, country_id, name) - city(city_id, state_id, name) - zip(zip_code, city_...
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,...
Explain debugging methodology for production issues
In a technical interview, you are asked: > What is your methodology when debugging or when something goes wrong? Describe a systematic approach you wo...
Improve chip performance without process advances
Assume you are working on a digital chip, but the semiconductor process node and basic device technology are fixed: there is no new, faster process an...
Analyze time complexity and threading trade-offs
Answer the following conceptual questions. 1) Worst-case time complexity State the worst-case time complexity (Big-O) for each operation and briefly j...
Explain left-skewed returns and Black–Scholes terms
Answer the following quantitative finance / statistics questions: 1. Left-skewed returns - Name one or more sectors/strategies whose return distrib...