The purpose of the Field Service Technician Level III role is to perform advanced start-up, commissioning, installation, testing, troubleshooting, service, and repair of IEM equipment. This position is responsible for resolving complex technical issues, supporting critical customer engagements, and serving as a senior technical resource for Field Service teams. The Field Service Technician Level III works independently with limited supervision, exercises sound judgment in high-priority field situations, partners with internal teams to drive issue resolution, and assists with mentoring and developing Level I and Level II technicians.