As a member of the Constellation Nuclear Cyber Security team, the Principal Engineer performs advanced technical problem solving, solution design, and issue resolution while acting as a resource and subject matter expert for plant Operational Technology systems such as the Defensive Architecture to include SIEM, firewalls, data diodes, and other assets that monitor plant process computers, data historians and core monitoring systems in support of nuclear plant operations. Responsible for technical decisions. Possesses superior knowledge in functional discipline and its practical application and has detailed knowledge of applicable industry codes and regulations. Functions with industry-recognized level of expertise in a technical area.