Comment by generationP

Correction: Her MIT position (a Moore instructor, at least according to her own website https://sites.google.com/view/lpiccirillo/home ) is not a tenure-track job (see https://math.mit.edu/about/employment.php ). It's still one of the best academic jobs a fresh PhD can get these days (certainly more prestigious than a "mere" postdoc). I don't think you can get a tenure-track job right out of your PhD, even an MIT fake tenure-track job (they say it guarantees you tenure, just not necessarily at MIT).