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."
Harden a URL-Caching HTTP Service for Production
Harden a URL-Caching HTTP Service for Production You inherit a working HTTP service that accepts URL-related requests and keeps cached URL records in ...
Highlight Overlapping Phrases in a Sentence
Highlight Overlapping Phrases in a Sentence Given a sentence such as The quick brown fox jumps over the lazy dog. and phrases such as quick brown and ...
Find Duplicate Files with a Hand-Written Directory Traversal
Find Duplicate Files with a Hand-Written Directory Traversal Implement a duplicate-file finder starting from a root directory, but do not use a recurs...
Find the Bugs in an AI-Generated URL Shortener
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Reason About Duplicate Data and Scaling in Spark
Reason About Duplicate Data and Scaling in Spark In a technical experience discussion, explain how you would identify and handle duplicate data in a S...
Implement an In-Memory File System
Implement an In-Memory File System Design and implement an in-memory hierarchical file system. It starts with an empty root directory and a current wo...
Implement a Consistent Hash Ring
Implement a Consistent Hash Ring Design a consistent-hashing component that maps arbitrary keys to backend nodes and minimizes remapping when nodes ar...
Implement an Idempotent Versioned Database Update
Design an API operation that updates one database record safely under retries and concurrent writers. The client sends a record ID, expected version, ...
Represent and Evaluate Boolean Predicate Expressions
Design a data structure to represent and evaluate predicates such as abc > 5 and (test < 8 or team > 9). Support comparisons, and, or, parentheses, an...
Implement a Concurrent Buffered File Logger
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Find a User's Airport at a Given Time from Flight Records
Given flight records with departure airport, departure time, arrival airport, arrival time, and user id, implement a function that returns where a giv...
Plan Eviction and Cleanup for a Production Cache
Plan Eviction and Cleanup for a Production Cache A process-local timed cache is correct for basic puts and gets, but it can still exhaust memory, reta...
Implement a Paginated Medical-Record Filter Without Guessing an Ambiguous Rule
Implement a Paginated Medical-Record Filter Without Guessing an Ambiguous Rule You are given a paginated HTTP endpoint that returns medical records. E...
Explain Large Memory Allocation, Swap, and C++ Inline Trade-offs
In a low-level C++ interview, explain what happens when a program requests 8 GB of memory on a machine with 4 GB of RAM, and discuss the purpose and d...
Implement a Merkle Tree for Repository Contents
Implement a Merkle tree over the contents of a cloned repository. The tree should let a client and server compare repository state efficiently by exch...
Compare Quicksort and Mergesort in Practice
Compare Quicksort and Mergesort in Practice Compare Quicksort and Mergesort as choices for sorting a large collection. Explain their mechanics, comple...
Debug Validation Error Aggregation
This question evaluates debugging, error-handling, and message-normalization skills in Python schema-validation libraries, focusing on aggregation of ...
Parse a CSV and Generate a Gift Exchange
Parse a CSV and Generate a Gift Exchange Implement a small gift-exchange service. The input is CSV text with headers name,email. Parse valid participa...
Apply Roofline Analysis to a BF16 MLP Layer
Consider the BF16 layer Y = GELU(XW + bias) + residual, where X has shape B x 4096 and W has shape 4096 x 4096. The accelerator has 1 TB/s HBM bandwid...
Design a Configurable Order Validator with DAG Dependencies
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