Joshua is an instructor at Pro et Contra. As Team Captain of Indonesia’s World Schools Debating Championship team in 2019 and 2020, he was awarded the Top 12 ESL speakers. Since then, he has achieved outstanding awards in both the high school and college scene.

Recently, he was the 7th best speaker at Nanyang Technological University’s debating competition and 6th best speaker at the Asian World Schools Debating Championship.

He was the head delegate of the University of Indonesia’s delegation to Harvard World MUN, eventually becoming their coach. He has also directed numerous MUN conferences, becoming the assistant director at Harvard World MUN, Asia Pacific MUN. Other than MUN, Antoni has worked with UNHCR, the UN refugee agency, and in the corporate world as well, providing him with a plethora of experience and knowledge.