Johanes Soritua Silaen is a Service Engineer at Sysmex Asia Pacific since November 2022, with prior experience as an Electrical Engineer at PT. Syntek Otomasi Indonesia, where project management on a 16-hectare land acquisition project in North Maluku was emphasized. Johanes also contributed to energy auditing projects at Diponegoro University, optimizing lighting across multiple faculties, and was involved in solar power plant modeling initiatives to promote green city initiatives. Experience includes a role as a Laboratory Assistant at BPPTL, assisting in electrical physics education, and interning at PT.PLN (Persero), focusing on power grid analysis and maintenance. Johanes holds a Bachelor's degree in Electrical and Electronics Engineering from Diponegoro University, where four international research papers have been published.