His practice combines gestural abstraction with symbolic and linguistic structures, inspired by mythology, numerology, and architectural archetypes.

Recurring motifs, including labyrinthine and palindromic sequences, operate as devices through which meaning is constructed.

Through controlled mark-making and stratifified surfaces, his work considers communication as both a generative mechanism and a site of obstruction.

Issachar has presented solo exhibitions in São Paulo, London, Geneva, and Gstaad, and has participated in group exhibitions in Brazil and across Europe.

He lives and works between Greece and the United States.