Being a citizen of the Republic of Turkey is the first condition for becoming a sworn translator. The second condition for becoming a sworn translator is graduating from university. No language certificate or language exam is valid.
In summary, if you meet the conditions of citizenship and a university diploma in order to become a sworn translator, you have to swear before a notary.
At this stage you can work with any notary you want. Because, at the stage of swearing, the notary can also have aninterview with you and test whether you know the language well. You will be considered a sworn translator of the notary where you swear.