Which language or mix of languages would be the best option to build a creative and versatile extensions from scratch? (from simple overlays to interactive games that viewers can partake in)
I am looking to hire a software engineer but I don’t know which skills should I look for.
Extension front ends are in HTML/JS/CSS.
You could use a suitable JS framework that is frontend only if you want.
Extensions front ends are served from the Twitch CDN on a “dumb” Static CDN.
EBS/Extension Backend Services can be in whatever you want.
Twitch does not host your EBS so you can host it wherever, that is if your Extension even needs a EBS