Alex Gorischek is a technologist, product designer, and musician in Seattle. His personal single-page website is set in a single size of Belfast Grotesk Medium. It’s combined with Monotalic for highlighting the links.
Detail: On hover, the links in Monotalic change to a bolder weight. Since these two fonts share the same horizontal metrics (they are “multiplexed” or “uniwidth”), this doesn’t cause the text to reflow.