Dia lebih senior daripada saya dalam urusan perkerjaan.

English Translation

He has more experience on the job than I.

“Perkerjaan” is a typo. It should be “pekerjaan” (no need R between pe- and -kerja).
Also, the source button is linked to
https://tatoeba.org/en/sentences/show/4184222
But the sentence on this page is currently

Aku tidak yakin apa lagi yang harus aku lakukan. (Meaning: I’m not sure what else I should do.)

It looks like the original Indonesian sentence is a dead link.