Calixto Calderón possesses extensive experience in information technology and systems management, currently serving as Deputy Head of Sector at the Council of the European Union since February 2014, overseeing an IT Operations Centre and coordinating a six-person team focused on network security systems. Previous roles include IT & Systems Manager at Hidtma Ecomar, SL, where responsibilities encompassed managing IT systems and communications, and IT Secure Data Communication Engineer at the European Commission's Joint Research Centre, specializing in VPN interoperability. Earlier positions include Systems Administrator at Tracoinsa System, S.A., and Systems Manager at Seguridad de la Ribera SL, both emphasizing system and network management. Educational qualifications include an Executive Master of IT Management from Instituto de Directivos de Empresa and a Licenciado en Informática from Universitat Politècnica de València.