Themis was born and raised in Athens. He holds a diploma in Advertising and an MBA in Business Management. He is also a certified Adult Trainer and Career Advisor with studies in Digital Marketing, Neurolinguistic Programming and Negotiation.

Themis started his professional career in 2000 in commercial departments of multinational companies and in 2006 he moved to PAPASTRATOS where he gradually took over positions of responsibility in Sales, Marketing and Commercial Strategy. He continued in the Research & Development Department of the company, in Lausanne, Switzerland, as EU Commercialization Manager for New Generation Products and since 2018 he holds the position of National Sales Manager for the Greek market.

With over twenty years of corporate experience in the market, on April 2020, he founded Mentwr.gr to support business professionals to learn, grow and succeed. When not speaking or training, Themis participates in various voluntary initiatives in cooperation with educational institutions helping people maximize their potential and take their careers - and themselves - to unprecedented levels.