This website has been generated using Hugo, a fast static website generator. It uses a template by bootstrapious.com, ported to Hugo by Kishan B.
It runs on GitHub Pages, using the excellent blogdown R package by Yihui Xie in the background. The entire code for building this website is available on GitHub.
Getting this site up and running is due to a combination of two great tutorials by Robert Myles McDonell and Amber Thomas.