Finnish word anoja comes from Finnish anoa, Finnish -ja (Forms agent nouns, especially human ones; -er.)

Detailed word origin of anoja

Dictionary entry	Language	Definition
anoa	Finnish (fin)	Anoa (transitive) To ask, request, plead, beg, implore, entreat, petition, solicit.. (transitive) ~ virkaa = to apply for a post/job.
-ja	Finnish (fin)	Forms agent nouns, especially human ones; -er.
anoja	Finnish (fin)	Applicant. Petitioner.

Words with the same origin as anoja