Onorius joined Cosentini Information Technologies in 1997 and became its director in 2006. His career began with designing telecommunications cabling infrastructure for corporate offices and headquarters, mission-critical facilities, hotels, convention centers, high-rise residential buildings, government facilities, and cultural centers. Since then, Onorius has designed security and audiovisual systems, LAN/WAN and voice networks, provided Distributed Antennae System (DAS) performance specifications and wireless infrastructure system design. His expertise is in the convergence of technology with building systems, including but not limited to information technologies, audiovisual, security, MEP, fire protection, lighting, BMS, and building automation.