Live mock interview · Node.js backend (mid-senior) · 30 min walkthrough

A realistic mock job interview for a **Node.js backend engineer** — the kind of questions you'll actually be asked, with concise, accurate answers you can model your own on. Recorded in a familiar video-call layout. Total length: 29:41 · Candidate: Ananya Verma · Interviewer: Praful Karmur ⏱ CHAPTERS 00:00 Audio check & small talk 00:22 Introduction 00:52 Current project 01:37 JavaScript & Node.js fundamentals 06:38 Express & API design 10:58 Authentication & security 14:36 Databases 19:20 Caching, performance & scaling 22:49 Messaging & distributed systems 25:59 Production scenarios 27:57 Behavioral closer 28:58 Wrap-up 📝 WHAT'S COVERED The interview opens with a normal warm-up (audio check, intro, current project), then ramps through the technical core — Node.js / JavaScript fundamentals, Express & API design, authentication & security, databases, caching / performance / scaling, messaging & distributed systems — before two production-scenario / debugging questions and a behavioral closer (toughest bug, handling pressure). Every answer is kept tight (3–4 sentences) so you can study the pattern without skipping. Full transcript and timestamps above. 👇 GET MORE LIKE THIS If this was useful, hit subscribe — more mock interviews and breakdowns dropping weekly. Drop a comment with the question you found hardest, or the next role you want to see (React, Python, system design, DevOps...). #interview #mockinterview #nodejs #backend #softwareengineering