Sean Kelly is the Chief Financial Officer and is a seasoned business leader with more than 15 years of experience in construction and business management. He began his career as a US Navy Nuclear Propulsion Engineer. His passion for entrepreneurship and engineering has created a pedigree of project management and business building excellence. Sean is a natural leader with a strong focus on collaboration and teamwork. He has a keen sense for identifying and nurturing talent, and an ability to bring out the best in his team members. With a deep understanding of financial and business management, Sean is committed to driving growth and maximizing value for Columbia Engineering Group and its stakeholders.

Sean has a long history of commercial and residential construction, including extensive envelope improvements to aged commercial buildings including roof, windows, doors, siding, and full interior renovations. Sean has been involved in re-roofing and replacement of roof assembly systems on commercial buildings including TPO and PVC membranes with insulation, cover board, parapet cap, curbs and flashing around mechanical equipment, and structural repairs. He has also specialized in the replacement of siding and windows on wood framed and masonry commercial and multifamily buildings, including removal and installation of metal panel systems, and windows with full frame replacements and retrofit replacements. In the last 10 years Sean has managed more than 1500 projects involving aged building renovations and is an expert in this field.