Svinhufvud's career in law followed a regular course: he worked as a lawyer, served at district courts, and served as a deputy judge at the Turku Court of Appeal.
Svinhufvuds karriere indenfor juraen fulgte den sædvanlige vej: han arbejdede for en advokat, gjorde tjeneste i byretter og dernæst som underdommer ved appelretten i Turku.