Heryoki Yohanes holds a Master's degree in Systems Engineering from Gadjah Mada University, obtained in 2021. Prior to this, he worked at the Agency for the Assessment and Application of Technology (BPPT) from 2011 to 2021. He currently serves as a Researcher and Engineer at the Research Center for Agroindustry, National Research and Innovation Agency (BRIN), a position he has held since 2021. His research interests focus on sustainable processes for agroindustry applications, fluidized bed coffee roaster design, chemical production optimization including rubber processing aid development, and palm oil derivative process technology for value-added products.