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."
Debug and Extend Cursor Queries
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Implement Stateful Fetch-N over a Paginated Upstream
Implement Stateful Fetch-N over a Paginated Upstream Scenario An existing upstream method fetch(pageToken) returns {items, nextPage}. Build a stateful...
Design a Thread-Safe Shared Counter
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Build a Robust Log Parser and Prefix-Operator Search
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Validate AI-Generated Code Safely
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Design and Implement an Idempotency Layer for Order Creation
Design an idempotency layer above an order creation service so duplicate client retries do not create duplicate orders. `hint Hint 1 Start by stating ...
Design a task management system with TTL
Task Management System (in-memory) Design and implement an in-memory task management system that supports tasks, users, task assignment with TTL (time...
Handle Island Counting When the Grid Does Not Fit in Memory
Prepare for a Bytedance software engineering interview question about handle island counting when the grid does not fit in memory. The prompt highligh...
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...
Generate a ride map image via POST API
This question evaluates a candidate's competency in geospatial data processing and HTTP API integration, including JSON parsing, coordinate batching f...
Parse and Summarize HTTP Access Logs
Parse and Summarize HTTP Access Logs Given a list of raw access-log strings, parse valid records and report the number of total requests, client error...
Design a Parallel Image Processor
This question evaluates a candidate's competency in designing a correct, deterministic image-processing component for shared-memory systems, including...
Extensible Security-Event Pipeline: Rule Suppression and Plugin-Based Enrichment
This question evaluates a candidate's ability to design extensible, plugin-based software architecture for a multi-tenant processing pipeline. It test...
Answer conceptual true/false and caching questions
This question evaluates understanding of integer representation, caching eviction policies and trade-offs (LFU vs LRU) including communication of anal...
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...
Review AI Platform And Software Fundamentals
Prepare for an AI platform engineering interview that asks about RAG, indexing, database choices, evaluators, stream data handling, OOP principles, bi...
Design CSV upload endpoint with GPT classification
This question evaluates backend engineering skills including HTTP API design, multipart file handling, CSV parsing and serialization, local JSON persi...
Implement a Clean In-Memory Transaction Ledger
Build a clean in-memory ledger for deposits, withdrawals, transfers, and balance queries using integer cents. Preserve atomic transfers, reject overdr...
Explain Backend Infrastructure Fundamentals
This question evaluates understanding of Kafka fundamentals—topics, partitions, consumer groups—plus rebalance mechanics and consumer-group message di...
Reviewing a Freight-Scheduler Codebase: Bugs, Data Structures, and Concurrency
You have just finished implementing process_order(...) inside a large provided codebase for a freight-scheduling system (this is the review stage of a...