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Leonardo Maccari Rufino has worked as a Software Developer at Dejero since November 2018. Prior to that, they worked at KHOMP as a Software Developer from October 2007 to October 2018. Leonardo also worked as a Researcher (M.Sc. Student) at the Software/Hardware Integration Lab from January 2010 to March 2012.

Leonardo Maccari Rufino's education history is as follows:

From 2010 to 2012, they attended the Universidade Federal de Santa Catarina, where they obtained a Master of Science (M.Sc.) degree in Computer Science.

Prior to their master's degree, from 2006 to 2009, Leonardo also studied at the Universidade Federal de Santa Catarina and earned a Bachelor of Science (B.Sc.) degree in Computer Science.

Before starting their bachelor's degree, Leonardo attended the Escola Técnica de Santa Catarina (ETESC) from 2002 to 2003. Here, they completed a program in Software Engineering and received a degree as a Software Engineering Technician.

Based on the provided information, Leonardo's education primarily focuses on Computer Science.