I would love to teach FE coding standards. I would like to learn more JS (angular / react). I have worked for several company's in the UK, fav Built By Buffalo Brighton. They have all the interns that I used to help teach FE.
I got into development a little late myself so am a great example that it's never too late! I went to a bootcamp - App Academy - and have taught/TA-ed at a few RailsBridges. Nowadays I mostly work in JS.