🧠 Core Behavioral Questions Describe a challenging technical problem you solved and how you approached it Explain a time you disagreed with a teammate and how you resolved it Share a situation where you had to make a trade‑off under pressure Talk about a project you’re proud of and why Describe a failure and what you learned from it 🏗️ System Design & Architecture (Conceptual, No Code) How would you design a scalable notification system What factors do you consider when choosing between SQL and NoSQL How do you ensure high availability in a distributed system Explain how you would design an API for a large product What’s your approach to handling rate limiting 🤝 Collaboration & Teamwork How do you handle unclear requirements Describe your communication style when working with cross‑functional teams How do you mentor junior engineers What do you do when you think a project is going off track 🧭 Decision‑Making & Problem‑Solving How do you prioritize tasks when everything feels urgent Walk through your debugging process How do you evaluate whether to build vs. buy a solution What’s your approach to reducing technical debt 🔐 Reliability, Security & Quality How do you ensure code quality without writing code here What’s your philosophy on testing strategies How do you think about security in system design 🧭 Leadership & Ownership Describe a time you led a project without formal authority How do you make decisions when data is incomplete What does ownership mean to you as an engineer If you want, I can also craft sample answers, build a mock interview, or tailor questions for FAANG‑style, startup‑style, or senior‑level interviews. Which direction feels most useful — mock interview practice, sample answers, or deep