I’m here to write WordPress themes and plugins for you, from scratch. The closer your request is to that, the more likely I am to hit a home run for you. Some tangential things I also dabble in are installing/configuring/troubleshooting WordPress itself, and editing plugins and themes written by other people.
If it’s on MailChimp.com or the MailChimp API, I’ve done it many, many times.
If you need to sell something on the internet, I’m likely to recommend Ecwid and I can help you get set up.
If you are looking for an acronym skillset, yep, I have it. I prefer to speak in terms of finished products but, yes, I know web languages.