Apple is seeking a Semiconductor Facilities Engineer for their on-site lab facilities engineering position. This role involves supporting the facility operations for a variety of process tools in a semiconductor wafer research facility. Responsibilities include maintaining systems for equipment operations, training, safety, and performing maintenance and repairs on support equipment. The engineer will interact with internal teams, external partners, government agencies, sub-contractors, and suppliers. They will also participate in on-call duties, responding to critical facility alarms, and work on weekends and holidays to coordinate major equipment repairs, maintenance, modifications, and installations.