Graduated with a degree in  Marine Science from Jenderal Soedirman University in Purwokerto, Dennis has great interest in marine conservation field. He started his career as a temporary staff member at World Wildlife Fund in Komodo National Park.

Now working as Marine Biologist at Anambas Foundation, his responsibilities are to design, execute, and monitor marine conservation programmes, such as coral reef conservation and restoration, sea turtle conservation, improve the integrated environmental management, and solid waste management in Bawah Island.