Mavrotas is now following an academic career, as an associate professor in the School of Chemical Engineering at the National Technical University of Athens with expertise in Operational Research.

In addition to his athletic career, in 1990 he completed his studies at the National Technical University of Athens (NTUA) at the School of Chemical Engineering.

In December 2003 he began his academic career at the Laboratory of Industrial & Energy Economics at the School of Chemical Engineering of the NTUA, and today he is associate professor.

In 2010 he wrote the novel "Theorem of Seven" containing a number of autobiographical details and focuses on the importance of friendship, collective effort, victory and defeat.

In June 2021 he was elected chairman of the Follow-Up Committee of the Macolin Convention against the manipulation of sport competitions of the Council of Europe and he was re-elected in the same position for a second term in May 2023.