This website is made with Haunt, a static site generator written in Guile Scheme.
The source of this site is available here.
The site is heavily based on dthompson's website, the source for which is available here.
jakob.space (source) is also very helpful for figuring out how to code a Haunt site.
We use Gitlab Pages to host our site - the statically generated pages are deployed to Pages on commit. You can see the simple config for that here.