https://www.70millionjobs.com/page/Certification
I see nothing but some share buttons, the standard header and footer, and a blank white page. There's a Sumo login tab that slides out of the scroll bar if you mouseover near the top right corner.
It's perhaps only caused by the Show HN DDOS/hug of death, but better to learn now than later that the Sumo Listbuilder popup takes at least 30-60 seconds to load. I only waited long enough to notice it because I had to disable UBlock and reloaded watching the Network tab of the dev tools.