feider started as a teacher in his native city of roman, and then taught in the town of târgu ocna until he passed his teacher’s capacity examination in 1935. having obtained his capacity degree, he was hired as teacher of natural sciences at the “st. o. iosif boys lyceum” in odorheiu secuiesc (hungarian: székelyudvarhely), harghita county, transylvania, romania. the renowned educational institution, which preserves until today inside its yard the ruins of a roman castrum, was named after a prematurely dead romanian pre-symbolist poet, ștefan octavian iosif.