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."
Design an Extensible Animal-Chess Game Engine
Design an Extensible Animal-Chess Game Engine Design an object-oriented engine for a two-player, turn-based animal-chess game. The interviewer will su...
Implement a Time-Aware Banking System
Implement a Time-Aware Banking System Design an in-memory banking component in four increments. It must create accounts, accept deposits, transfer fun...
Design an In-Memory Transactional Key-Value Store
Design an in-memory key-value database that supports transactional reads and writes. Expose a class with these operations: - begin() starts a transact...
Design a Threshold-Based Database Partition Rebalancer
Design a Threshold-Based Database Partition Rebalancer You are given database partitions and a size threshold. Oversized partitions should be split in...
Implement a Multi-Level Recipe Management Service
Implement a Multi-Level Recipe Management Service Design and implement an in-memory recipe manager. A recipe stores a name, an ordered ingredient list...
Build a Streaming Markdown Code Fence Parser
Implement a streaming Markdown parser that recognizes inline code spans marked with backticks and fenced code blocks marked with triple backticks. The...
Implement a Five-Minute Hit Counter
Implement a HitCounter with two operations: - hit(timestamp) records one request. - getHits(timestamp) returns the number of requests in the last 300 ...
Implement a Recoverable In-Memory Key-Value Store
Implement a Recoverable In-Memory Key-Value Store Design and implement a single-process key-value store whose working set is held in memory and whose ...
Explain BIOS and UEFI Firmware Mechanisms
Explain BIOS and UEFI Firmware Mechanisms Answer the following firmware and low-level systems questions. State assumptions about architecture and firm...
Parallelize Blocking API Calls with a Thread Pool
Parallelize Blocking API Calls with a Thread Pool An existing function loops over a list of inputs and calls a blocking API once per input. Replace th...
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...
Add Nested Begin, Commit, and Abort Semantics to a Shopping Cart
Add Nested Begin, Commit, and Abort Semantics to a Shopping Cart An in-memory shopping cart already supports add(item), remove(item), and a pure disco...
Design a Compact Columnar File Format
Design a Compact Columnar File Format Design a simplified Parquet-like file format and specify write and read operations. The format should store type...
Design an Indexable Deque with O(1) Access
Design a data structure backed by a deque that supports push front, push back, pop front, pop back, and O(1) access by logical index. Explain how an o...
Evaluate Defensive Testing and Pair Programming
An engineering interview asks you to compare two practices that aim to reduce defects: defensive testing and pair programming. Explain what each pract...
Design an Extensible Tax Policy Engine
Design an Extensible Tax Policy Engine You already have a correct evaluator for one progressive-bracket policy. Design the surrounding tax engine so i...
Design a Concurrent, Memory-Bounded Tally Service
Design a Concurrent, Memory-Bounded Tally Service Design and implement the core of a TallyService with two operations: - bump(timestamp): record one e...
Design a Resilient Bootstrap API Aggregator
Design a Resilient Bootstrap API Aggregator Design a bootstrap endpoint that accepts userId. A user service returns customerId; payment and address se...
Design a Data-Driven Expense Rule Evaluator
Design a Data-Driven Expense Rule Evaluator Design an expense-policy evaluator whose rules are stored as validated JSON so policies can be added or ch...
Design a Multi-Level Expiring Item Store
Design a Multi-Level Expiring Item Store Design a class with initialization, store, and retrieve operations for items placed into ordered storage leve...