He has worked for more than 20 years as a translator and technical reviewer in different areas. With more than 10 translated books published, besides being the author of four dictionaries, Prof. Sergio is a member of the organizing committee of Simpósio Profissão Tradutor (PROFT – Profession Translator Symposium, in English). With Spanish, English and Portuguese as his working languages, he has worked on reviewing audiodescription scripts, as well as translating articles, news, scripts, and screenplays.