Ruihao is a licensed California Professional Engineer (PE #C97771) on the structural engineering team at Spacial Services, where he delivers stamped, code-compliant structural engineering for residential projects. He spent four years as a Project Engineer at Salas O’Brien, a national firm, working across multiple states and code jurisdictions. His projects include 150-plus-unit multifamily communities, seismic retrofits of wood-frame buildings, and a 60,000-square-foot emergency operations center engineered to stay operational through a major earthquake. Ruihao holds an MS in Structural Engineering from UC Berkeley. He started on the construction side, catching conflicts between structural, mechanical, and electrical systems before they reached the field.