Operate air conditioning systems by activating motors, fans, chillers for liquid cooling, fan coil units for environmental climate control, pneumatic and electroelectronic control devices, and air conditioners. Operate conventional refrigeration systems and ammonia-based refrigeration systems. Monitor the operation of refrigeration and air conditioning systems and perform basic preventive maintenance on these systems. Use communication equipment, record operational incidents, and complete routine reports. Work in compliance with technical and quality standards and procedures, as well as those related to safety, hygiene, health, and environmental protection. Carry out routines as directed by Supervisors and Coordinators. Employment type: Permanent CLT contract Salary: R$1,880.48 per month Benefits: * Life insurance * Meal allowance * Transportation allowance Selection question(s): * Are you available to work day shifts (07:00–19:00)? Education: * Completed elementary education (Mandatory)