Front-end dev, expert level with HTML, CSS and JS, comfortable with PHP. I started out doing a lot of custom Drupal/WordPress work for a long time. I built a sizable app with Angular 1.x (yuck). These days, I'm mostly doing function-based React with GraphQL in Next and Gatsby.
What AWS is doing with lambdas is very interesting, as is Rust-based performance-centric code and the Ethereum/Solidity world.
To a lesser extent, I can help with minor Apache sysadmin stuff, CLI issues and some tooling stuff.