The knowledge, expertise, and skills that you gain early on will form the foundation for your later investigations.
My expertise is all about ambushing and harrasing the opponent.
They invite me to appear at conferences to share my expertise.
This is a demanding position where you will make significant use of your scientific expertise.
The climb will be guided and is non-technical, meaning ropes and mountain climbing expertise are not necessary.
I'm not an entomologist, so I don't have the expertise for describing species.
It may also be true that writing about poetry requires a certain esoteric expertise that few have.
They immediately began sharing and building on each other's expertise.
The hard skills are the technical expertise you need to get the job done.
Perhaps your search has been limited geographically, or your field of expertise is very specific and narrow.