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."
Explain OOP design and API rollout
In one interview round, the discussion focused on practical backend engineering rather than pure algorithms. Discuss both of the following: 1. You are...
Design a pizza ordering system
Design the core object-oriented model for a pizza ordering system used by a small restaurant. The system should allow customers to: - browse a menu of...
Compare C++ new, malloc, and Placement new
Compare C++ new, malloc, and Placement new Explain what happens when a C++ new expression is evaluated, how it differs from malloc, what placement new...
C++ Fundamentals: Memory, Compilation, and Containers
This question tests deep knowledge of C++ internals, covering memory management, compilation mechanics, and standard container trade-offs. It evaluate...
Design a thread-safe event dispatcher
Problem: "Event fire" / event dispatcher with multithreading Design an in-memory event system that supports registering listeners and firing events. C...
Implement a Credit API Workflow
You are given documentation for a sandbox credit-management API. The documentation describes API operations for creating an account, adding credits, c...
Design an object-oriented parking lot system
Design an object-oriented model for a parking lot management system. Requirements: - The parking lot has multiple levels; each level has multiple park...
Solve Graduate Trader Probability Questions
A graduate trader online assessment reportedly included the following quantitative reasoning, probability, and logic questions. Solve each problem. 1....
Search Words and Phrases in a Large Line-Oriented File
Search Words and Phrases in a Large Line-Oriented File A text file contains one sentence per line and may be much larger than memory. Design an API th...
Design an Event Recommendation Engine
You are building an email marketing recommendation engine for a ticketing marketplace. The marketplace has many users and many events. The engine shou...
Design an Expected O(1) Randomized Container
Design an Expected O(1) Randomized Container Design a generic container that stores distinct elements and supports: - insert(element) -> bool: add an ...
Compare Core Networking and Language Runtime Concepts
Explain the following core software-engineering concepts as if answering a technical screen. Use concrete examples, distinguish guarantees from common...
Build Resilient Aggregation and Debug Routing
This onsite combined two software-engineering exercises: 1. Implement a service method that calls multiple mock downstream APIs, merges their response...
Explain Modern Python Features and Ecosystem
This question evaluates a candidate's expertise in modern Python language features, the surrounding ecosystem of libraries and frameworks, GUI toolkit...
How do you conduct a code review exercise?
In a live interview, you are shown a short code change — a diff, a pull request, or a standalone function — and asked to produce written code review c...
Make tree iterators safe under concurrency
This question evaluates understanding of concurrent data structures, iterator safety, synchronization mechanisms, and reasoning about shared mutable s...
Model particle hits on a screen
A point source at (0, 0) emits particles toward an infinite vertical screen located at x = 1. For each particle, sample an angle theta uniformly from ...
Implement tap-to-infect color grid on iOS
iOS Grid Infection (Flood Fill) Design Goal Build an iOS app that displays a 2D grid with two colors. When the user taps a cell, all 4-directionally a...
Build a GPU VM Fleet CLI
This question evaluates competency in designing provider-agnostic tooling for managing GPU virtual machines and fleets, covering API integration, life...
Design an ads retrieval service using a heap
This question evaluates understanding of priority queues/heaps, object-oriented API design, and algorithmic techniques for maintaining dynamic priorit...