I believe that is not a typo. What they are saying is that this job is a GS-15 job with a salary of 123k-155k, and that in order to be qualified to apply for this job, you must demonstrate that you have at least one year of experience working at a level equivalent to GS-14.

No bones about it, this job requires wading through A LOT of crap. But so does being a successful startup founder, or senior executive at a big company. It may be different kinds of crap, but no important job is every easy. I do believe doing this job well could in fact change the reality (to some small degree) of how government works.

The only chance we have of making the system better is to have capable, good people trying to make it so.