- Perform water and wastewater treatment in compliance with legally and contractually established standards, following manuals, operational procedures, and applicable quality, health, and safety regulations, while ensuring cost and resource consumption control; - Receive deliveries of raw materials (chemical products), ensuring proper storage and quality, and forwarding received documentation to the appropriate department; - Monitor and control all stages of the water and wastewater treatment process by conducting physical-chemical laboratory sampling, recording observations, and tracking and logging water level and flow measurements in operational control and monitoring spreadsheets and the Operations Shift Logbook; - Administer chemical dosing at various treatment stages according to instructions from the responsible technician, avoiding waste and optimizing input consumption. **Education:** Completed Technical Education in Chemistry, Chemical Processes, Sanitation, Environmental Science, or related fields qualifying for registration with the Regional Council of Chemistry (CRQ). **We Offer:** Market-competitive salary; Flexible benefits (Meal/Voucher Allowance); Transportation Allowance; Medical Insurance; Dental Insurance; Gympass; Life Insurance; Profit-Sharing Plan (PLR). **Desirable:** Experience as a Water/Wastewater Treatment Plant Operator. **Shift Schedule:** 12x36 (7:00 PM – 7:00 AM) **Location:** Manaus / Amazonas State Employment Type: Full-time, Direct Hire (CLT) Compensation: BRL 1,800.00 – BRL 2,000.00 per month Benefits: * Medical insurance * Dental insurance * Profit sharing * Life insurance * Meal allowance * Food allowance * Transportation allowance Selection Questions: * What is your expected salary? * Do you hold a technical qualification in Chemistry, Environmental Science, or related fields? If yes, please specify. * Do you have experience operating water/wastewater treatment plants (WTP/WWTP)? If yes, please elaborate. * Do you have easy access to Manaus/AM? * Are you available to work the 12x36 night shift (7:00 PM – 7:00 AM)?