Bizarrely enough, I always had "Software Engineer" written on all my documents here in Germany: my old Residence Permit, tax documents, contracts, the speedy authorisation from Agentur für Arbeit when I moved here, etc. As far as BRD is concerned, I am a software engineer.
But I never really studied software engineering or anything related, only Electric Engineering.
But nobody in the government knows that. I don't have my diploma papers with me and have no time or interest in going to my country of origin and ask my university for it.