Personally, I wouldn't do equity-based pay on altcoin projects.
I did do equity-based compensation on LN stuff back in the day, But I knew it was gold from the get.
I even voluntarily ran a campaign pitch with major players at the time to pitch in on a LN based services campaign, but LN did pretty well and didn't need it.
with that being said, at the top layer this project seems to be taken very seriously by the powers that be.
https://cozy-world-metaverse.gitbook.io/cozyworld/inrtoduction/welcome-to-the-cozy-world-metaverseMaybe a metaverse/web3 fanatic will take keenly to the project. Or perhaps good pay on the project will create a metaverse fanatic.
What are the requirements (programming languages, etc)?
Fullstack usually consist of HTML, CSS, JavaScript, Python, C#, PHP and other languages.
This appears to be a metaverse project so you'll likely have your hands full and learn some new languages on the fly.