As of today, all national sides of Bulgarian Euro coins list Petar Stoikov (That his name most likely should be written as Stoykov is another thing - https://bnb.bg/NotesAndCoins/NACCoinsCurrency/COIN_2002_1LV_CIRC_EN, as currently written in N#5109) as engraver.
He is the one behind the standard circulation lev preceding the euro in the country, but not behind N#80515, yet (based on public information I have been able to find) I believe that he should not be the one tagged (at least not on all euro coins). Here is why: The Bulgarian National Bank says in its press statement that “The artistic designs are made by the Bulgarian Mint EAD.” twice: https://bnb.bg/AboutUs/PressOffice/POAccessionToTheEuroArea/POAEFIPressReleasesAndStatements/PR_20250409_EN and https://www.bnb.bg/AboutUs/PressOffice/POPressReleases/POPRDate/PR_20231116_EN, not mentioning individuals. Yet, the designs are obviously adaptations of existing lev ones, where the 2 leva design is by Vanya Dimitrova.
Based on this, either all coins should say that Bulgarian Mint/Moneten dvor EAD is the engraver (though not a person), or the 2 euro coin should be updated to say Vanya Dimitrova. I am willing to change my opinion if presented with evidence to the contrary or with a policy for (company) teams of unnamed people.
What is the policy on unnamed teams/collectives? I have another example: N#131726 is marked “Vanya Dimitrova and a Moneten dvor EAD collective" on the BNB website: https://bnb.bg/NotesAndCoins/NACCoinsCurrency/COIN_2018_2LV_CIRC_BG (no English translation currently available).