G. Pleše je započeo svoju karijeru u INA Grupi 2005. godine. Radio je na raznim pozicijama unutar Kontrolinga INA-e, a u međuvremenu je obnašao i pozicije glavnog financijskog direktora te direktora Korporativnih poslova Crosca i STSI-ja. U listopadu 2018. imenovan je članom Uprave Petrokemije, zatim u siječnju 2020. nastavlja svoju karijeru na poziciji direktora Kontrolinga INA Grupe. Prije nego što je stupio na poziciju operativnog direktora Rafinerija i marketinga obnašao je funkciju direktora usluga kupcima i projektnog financiranja na razini MOL Grupe.

Magistrirao je ekonomiju te završio postdiplomski studij Ekonomskog fakulteta u Zagrebu.

Mr Pleše started his career at INA Group in 2005. He had various roles within INA’s Controlling, and in the meantime he also held the positions of Chief Financial Officer and Director of Corporate Affairs of Crosco and STSI. In October 2018 he was appointed as Member of the Management Board of Petrokemija, and afterwards he continued his career as Director of Controlling in INA Group. Before he was appointed as Operating Director of Refining and Marketing he was Head of Group Consumer Services and Ventures Finance.

He has a MSC degree in economics and completed postgraduate studies at the Faculty of Economics in Zagreb.