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."
Explain Modern Python Features and Ecosystem
You are interviewing for a senior Python software engineering role. The interviewer is probing the breadth and depth of your Python knowledge: not jus...
Design a Thread-Safe Shared Counter
Design and implement a per-key call counter: a component that tracks how many times each distinct key has been seen. The API is a single method, for e...
How to prepare for AI-assisted coding interviews?
Scenario You've been invited to a DoorDash onsite round labeled the "AI Code Craft Challenge." Per the prep kit: - You will receive starter code — an ...
Debug and Extend Cursor Queries
You are in an AI-assisted coding interview. You may consult AI-generated suggestions, but you are expected to validate them, explain your reasoning ou...
Explain code complexity and design two games
You are given three independent interview prompts. 1) Code comprehension & complexity - Given two short code snippets (language-agnostic), explain in ...
Generate a ride map image via POST API
You are given a local JSON file ride-simple.json containing a recorded bike ride as an ordered list of GPS points. Your job is to turn this ride into ...
Fix the Password Reset Workflow
You are given a small code repository that implements a password reset flow. The repository ships broken: several bugs prevent the application from wo...
Design a deck of cards with shuffle/draw
Object-Oriented Design + Randomness: A Deck of Cards Design an in-memory model of a standard 52-card playing deck. Your design will be exercised by cl...
Design an In-Memory Pub-Sub Model
Design an object-oriented, in-memory publish-subscribe model. Requirements: - A publisher can publish a message to a topic. - A subscriber can subscri...
Build a Reliable Streaming Chat UI
You are building a React-based chat interface where assistant responses stream into the UI token by token in real time (the same UX as a typical LLM c...
Design a multi-threaded synchronous log writer
Problem Design a log(message) component that is called from many application threads concurrently and appends each message to a single log file on dis...
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...
Implement a RESTful Q&A service
You are asked to build a small REST service (in any language/framework you choose) that resembles a minimal Stack Overflow-style Q&A system. Design an...
Design follow/follower classes
Object-Oriented Design: Follow / Follower Relationship Design a small set of classes for a social product where users can follow and unfollow each oth...
Find frequent IPs from a huge file
You are given a very large log file (too large to fit in memory). Each line contains an IPv4 address (e.g., 203.0.113.7). Design an approach to answer...
Design an extensible expense rule evaluator
Scenario You are building a corporate employee expense card product. Admins define policies (“rules”) to prevent misuse and to flag policy violations....
Design a Cache with Hit Counts
Design a key-value cache that supports get(key), put(key, value), and delete(key). In addition, the cache must track how many successful reads each ke...
Design a Parking Lot
Problem In an AI-assisted coding round, design the core object model and APIs for a parking lot system. The system should support: - Multiple floors, ...
How to debug a Python loop-condition bug
You are given a Python script that appears to hang or produce incorrect results because of a bug in a loop condition (e.g., while/for termination logi...
Design a jigsaw puzzle (OOD)
Object-Oriented Design: Jigsaw Puzzle Design an object-oriented model for a jigsaw puzzle game. Requirements - The puzzle consists of a set of pieces ...