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."
Implement Layered Endpoint and Global Rate Limits
Design an in-process rolling-window rate limiter that enforces both per-endpoint and backend-wide limits atomically. Examine boundary semantics, concu...
Implement a Simplified std::vector with Manual Memory Management
This question evaluates a candidate's grasp of low-level memory management in C++, including the distinction between raw allocation and object constru...
Java, Spring & Kafka Fundamentals Deep-Dive
This question tests depth of knowledge across core Java, Spring Boot, and Kafka fundamentals commonly required for senior backend engineering roles. I...
Design a 2048 Game
Design the object model and core game logic for a 2048 game on an N x N grid. This is an object-oriented design problem: focus on the classes, their r...
Design a Versioned Recipe Store with Search and Rollback
Prepare for a The Trade Desk software engineering interview question about design a versioned recipe store with search and rollback. The prompt highli...
Reason About a Movie Billboard Rotation Component
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Design a Recipe and Inventory Ordering Service
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Design a Priority Task Executor with Duplicate Task IDs
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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...
Find the Longest Common Digit Prefix Across Two Arrays
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Design the Domain Model for an Automated Parking Garage
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Reconcile Records Across Sources
In an AI-assisted ("AI coding") interview round, you are asked to reconcile person records across multiple data sources. Each source contains records ...
Design a Todo List Object Model
This question evaluates object-oriented design and API modeling skills, focusing on domain modeling, class responsibilities, encapsulation, and design...
Compare Functional and Object-Oriented Python Design
Compare Functional and Object-Oriented Python Design Compare functional and object-oriented approaches for a Python component that transforms records ...
Design an extensible poker-hand evaluator
Design and implement an object-oriented solution for a simplified two-player poker-like game called Camel Cards. The interviewer is explicitly evaluat...
Trees and Binary Search Trees: Taxonomy, Invariant, and Traversal/Search
This question evaluates a candidate's grasp of tree data structures and the binary search tree ordering invariant, along with the ability to implement...
Find and Fix C++ Ownership Bugs: Double Free, Shallow Copy, and Object Slicing
This question evaluates a candidate's understanding of C++ object lifetime, copy semantics, and polymorphism. It tests the ability to spot shallow-cop...
Validate a Third-Party Identity Payload
Validate a Third-Party Identity Payload A third-party service returns a JSON payload with a fixed documented structure. The first subject contains a V...
Trace Virtual Address Translation Through TLBs, Page Tables, and Caches
Trace Virtual Address Translation Through TLBs, Page Tables, and Caches Explain how a CPU translates a virtual address to a physical address in a page...
Analyze the Fairness of an Incremental Shuffle
Consider the following function, where random() returns an independent value uniformly distributed in [0, 1) on every call: `javascript function shuff...