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."
How do you debug slowness and bugs?
The interviewer asked two practical engineering questions: 1. A web application's frontend is loading very slowly. Describe how you would diagnose the...
Explain Compiler Pipeline and LLVM Backend
You are interviewing for a compiler engineer role. Explain the major stages of a modern compiler, then discuss common optimization techniques and how ...
Implement and Improve React Components
Implement and Improve React Components React Technical Screen: Build a Rating Component and a Todo App Assumptions and Setup - Use React 18+ with func...
Design a Trade Ledger Class
This question evaluates the ability to design class interfaces, choose and justify data structures for ordered storage, and reason about sorting behav...
Python Language and Runtime Fundamentals
Python Language and Runtime Fundamentals Clarifying Questions to Ask - Should answers describe CPython specifically or Python language semantics acros...
How do you perform a thorough code review?
You are given several Python backend files to review (treat this as an “OA in code-review format”). The code performs database operations such as SQL ...
Design an object-oriented poker game
This question evaluates object-oriented design and system modeling skills, including abstraction, class responsibilities, object relationships, and do...
Reason About C++ Inlining, Allocation, and Polymorphism
This C++ systems interview question evaluates conceptual and practical understanding of inlining, memory allocation strategies, and static versus dyna...
Explain GPU pipeline and execution hazards
Explain the following GPU architecture topics: 1. How a modern GPU renders a triangle from input vertices to final pixels. 2. How register read-after-...
Design a meeting room reservation API
This question evaluates a candidate's object-oriented design and algorithmic competence for building an in-memory meeting room reservation API, focusi...
Find largest file in a directory using Bash
This question evaluates a candidate's proficiency with shell scripting and Unix command-line concepts, including recursive file-system traversal, reco...
Explain sync/async, Go concurrency, SQL vs NoSQL
You are interviewing for a backend engineering role. Answer the following conceptual questions clearly and with concrete examples. 1) Synchronous vs a...
Implement a Simplified std::vector in C++: Growth, Memory, Exception Safety, and Type Traits
Implement a simplified std::vector<T> from scratch in C++ — a dynamically growing array template. This is a classic C++ interview question at quantita...
Design article voting and flip-tracking system
This question evaluates object-oriented design, stateful data modeling, vote aggregation, and time-ordered event history tracking competencies in the ...
Explain C printf pointers and memory layout
You are given the following C code: `c const char *c = "12345"; ` Answer the following (assume typical modern 64-bit Linux/macOS with GCC/Clang, unles...
Design a bus simulation metric
This question evaluates a candidate's ability to comprehend and navigate a large unfamiliar codebase, safely make targeted code changes, and design, i...
Debug React Sorting, Persistence, Routing, and Accessibility
Prepare for a HackerRank software engineering interview question about debug react sorting, persistence, routing, and accessibility. The prompt highli...
Compute probability two arrivals meet within 15 minutes
Probability puzzle Two people plan to meet, but they arrive independently at a random time within the next 1 hour. - Person A’s arrival time is unifor...
Debug GPU Resource Allocation
This question evaluates debugging and root-cause analysis skills focused on GPU resource allocation, lease management, scoring and preemption policies...
Design Historical Visit Tracker
This question evaluates design of in-memory data structures and event-processing APIs, focusing on efficient state maintenance for historical timestam...