Jesús Pérez works as a fronted developer at Filterly, an American startup. Prior to Filterly, he has about two years as a VoIP/UC programmer and security specialist at a Spanish telecommunications company. As result of his work as a pentester, he implemented Bluebox-ng, a free tool to audit this kind of environment. Moreover, he had collaborations as a visiting professor at the college where he studied and the Spanish InfoSec blog, Security by Default.