Principal Engineer

Johnson Controls is a building technology company that makes and services heating, ventilation and air conditioning equipment, building automation and controls, fire detection and suppression systems, and security and access control products. It sells under brands such as York, Metasys and Tyco to commercial buildings, hospitals, data centers, schools and government facilities in more than 150 countries, and runs its North American operations from Milwaukee, Wisconsin. The company is headquartered in Cork, Ireland.