Here's some with tech jobs listed:

https://workday.wd5.myworkdayjobs.com/Workday https://shipt.wd1.myworkdayjobs.com/en-US/Shipt_External

It doesn't seem like there's a global listing across myworkdayjobs.com sites - each company using it has its own sub-domain. Which sort of makes sense - Workday is an internal HR/employee portal tool licensed to companies.