Senior Angular Interview Questions (2026): Architecture, Signals, RxJS, and the Real Senior Bar

Senior Angular Interview Questions (2026): Architecture, Signals, RxJS, and the Real Senior Bar — Written by Cristian Sifuentes • Jan 2, 2026 I’ve been sitting on the other side of the interview table for Senior Angular roles. Most candidates are technically “proficient”: they can call APIs, bind data, and close tickets. But when you peel back the layers, many are stuck in a bubble of routine. Being a Senior isn’t measured in how many years you’ve spent writing ngOnInit() . It’s measured in whether you understand why Angular behaves the way it does, whether you can recognize architectural smells early, and whether you can defend trade-offs without turning every decision into dogma. This is a production-minded checklist of interview conversations that separate “I can build screens” from “I can ship systems.” Table of Contents Part 1 — Architecture & Philosophy 1) State management: library or custom? 2) Composition vs inheritance (and why BaseComponent is a trap) Part 2 — Deep Angular Qu