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."
Design an API for pay computation with retries
You’ve implemented logic that computes a dasher’s pay from order event logs (events include timestamps and state transitions). Design an HTTP API to e...
Build a React color multi-select dropdown UI
Implement a React UI that lets users multi-select colors from a dropdown and view details. You are given a JavaScript object where each key is a color...
Answer OoO, caches, and memory-system questions
You are interviewing for a CPU/DV role. Provide clear explanations (and small worked examples where useful) for the following computer architecture to...
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...
Choose DynamoDB vs MySQL for a backend
In a backend system, you must choose a primary database for a core service. Explain when you would choose a key-value/NoSQL store (e.g., DynamoDB-like...
Answer conceptual true/false and caching questions
You are asked several quick technical screening questions. Answer each with Yes/No and provide a brief justification. 1. (Integer representation) “64-...
Design a thread-safe key-value store
You are working on infrastructure for an AI platform. Inside a single process, many worker threads need to share a simple in-memory key–value store; a...
Explain C++ and GPU Tradeoffs
The interview included several short-answer questions, all discussed in C++: 1. Explain how to reason about the output of a C++ program that uses both...
Explain your database experience and debugging approach
Interview prompts (practical engineering) 1. What databases have you worked with? - Which engines (SQL/NoSQL), what scale, and what features you us...
Explain what happens when opening a website
When a user types https://www.amazon.com into a browser and presses Enter, what happens end-to-end? Cover the major steps across the browser, DNS, TCP...
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 ...
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 and implement core Tetris game logic
Implement the core logic of the Tetris game in a way that can run in a terminal (no graphical UI required). Requirements: - Board/grid: standard size ...
Explain how to understand a large codebase fast
You are given an unfamiliar, large codebase with many classes and modules. You may use an IDE (jump-to-definition, find usages, call hierarchy) and AI...
Solve Graduate Trader Probability Questions
A graduate trader online assessment reportedly included the following quantitative reasoning, probability, and logic questions. Solve each problem. 1....
When to use a dictionary vs an array?
Question You’re implementing a feature and must choose between using an array/list or a dictionary/hash map to store and access data. Explain when you...
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...
Explain key React concepts and error handling
Frontend/React Fundamentals Questions Answer the following React and frontend engineering questions: 1. What is a Virtual DOM? 2. How does the Virtual...
Design a mini compiler/interpreter
Problem Design and implement a mini compiler / interpreter for a small expression language. You are given a program as a string (possibly multiple lin...
Debug Kubernetes crashes and review Python ingestion script
Part A — Kubernetes: Pod/Container Crash Debugging You are on call and a service deployed to Kubernetes starts failing. The Pod shows CrashLoopBackOff...