Over engineered. Just write it in pure HTML/CSS. It's a resume, you don't need anything more advanced.
This is how my resume was (maybe still is, I haven’t looked I years). One thing I did that I like was after the most recent jobs, the older and less relevant ones were faded a bit. A hover would make them dark and easier to read. When printing a PDF, only the darker more recent ones would print. This let me keep a full record in a single file (mostly for my own benefit), while still being able to quickly and easily p…
You could have structured data as json etc within that html, and some Javascript that renders that onto final html. Than add a button (or a URL argument, or print action) that returns final html (including all your Javascript). That way you only ever need to update your structured data while never needing to edit the html itself. You could theoretically even add some interface to update the resume. I am thinking tiddlywiki but for the CV.
May be that's what you are saying in your comment already. It will be self