Valdiney Domingos is the CEO and Founder of Siemex, and the Chief Technology Officer (CTO) for Reliance Industries Limited’s Greenfield Silicon project in Jamnagar. He is responsible for overseeing the full life cycle of the 90ktpy project, including conceptual, basic, and detailed engineering, equipment manufacturing, installation, commissioning, and process stabilization. He leads the development of high-performance submerged arc furnaces within an integrated photovoltaics supply chain for polysilicon production, focusing on sustainable design, energy recovery, and circularity initiatives. At Reliance, he supports the construction of the Dhirubhai Ambani Green Energy Giga Complex, a state-of-the-art facility for solar, energy storage, and mobility solutions, while driving technological and strategic decisions to create a fully integrated renewable energy ecosystem.