I'm not saying you're wrong but then why do a big website and branding push. If they had someone in mind they'd bury it on a regular job posting.
They specify early to mid career. Imo they're anticipating a ton of applications and bounding it makes reviewing them tractable.
Ya, I don't understand the calculus. If it's important enough for a big website, why not promote the site for a week first. Too many applications seems more desirable than missing the right people who are 'heads down building' or just not terminally online.
That on top of Direct Hire Authority.
I can see NASA Force[1] is part of the US Tech Force[2] push and has been talked about for the last several months.
[1]:https://www.meritalk.com/articles/nasa-opm-kick-off-drive-fo...
[2]:https://meritalk.com/articles/opm-launches-us-tech-force-to-...