John Tirrell

John Tirrell is a Principal Engineer at CHI Engineering Services, Inc., where a career spanning over 27 years includes managing and contributing to various complex projects, such as the design and construction management of gate stations for multiple gas companies and oversight of transmission relocations. Prior to this role, John served as the Director of System Design at National Grid, focusing on network analysis and distribution system design. Earlier in the career, John worked as an engineer at Stone & Webster, participating in the hot functional startup at Shippingport Nuclear Power Plant. John holds a Bachelor of Science in Mechanical Engineering from Worcester Polytechnic Institute, earned in 1982.