Dharsono Hartono works as a CEO of PT Rimba Makmur Utama, an Indonesian based company managing The Katingan Mentaya Project, a 200,000+ hectare peatland forest REDD+ project in Central Kalimantan, Indonesia. The Katingan Mentaya Project is living proof that carbon finance can combat climate change. The largest program of its kind, it generates an average 7.5 million triple gold certified carbon credits annually; equivalent to taking 2,000,000 cars off the road each year. In partnership with local communities, the company utilises carbon revenues to ensure natural forest restoration and protection, through activities aligned to the UN Sustainable Development Goals. The project protects vital peatland habitats for five Critically Endangered, eight Endangered and 31 Vulnerable species. The protected area is home to between 5 and 10% of the global populations of the Bornean Orangutan, Proboscis Monkey and Southern Bornean Gibbon.

Dharsono also has experience in financial consulting and international banking. Since 1998, he has worked for multinational companies such as PricewaterhouseCoopers and JP Morgan in New York handling merger acquisition, debt management and financing and capital raising. Dharsono received his Master of Engineering degree from Cornell University majoring in Financial Engineering.