**Laboratory Supervisor** Abastecedora Queretana de Agua y Alcantarillado S.A.P.I. de CV. and Operadora Querétaro Moderno S.A.P.I. de CV. Location: Terra Business Park, La Pradera. Position: Full-time. Responsibilities: * Distribution and chlorination of pumping stations. * Supervision of chlorination logs. * Sampling from supply sources (wells, pumping stations, and residential taps). * Monitoring of drinking water quality. * Verification of field sampling methods for drinking and wastewater. * Assistance in laboratory analysis (sample preparation, label creation, identification, and data entry of results). * Other duties inherent to the area. Requirements * Minimum education: Chemical Technician or higher. * Experience: 1 year (preferred) as a drinking and wastewater sampler. * Knowledge of drinking and wastewater sampling, microbiological and physicochemical analysis, environmental management systems, wastewater and drinking water treatment, regulations on drinking and wastewater quality, good laboratory practices. * **Ability to drive a standard vehicle and possession of a valid driver's license.** * Service-oriented attitude, punctuality, and responsibility. Salary and benefits * Salary: $15,000 net monthly. * Statutory benefits from day one. * Savings fund 6%. * Growth opportunities. Schedules: ° Monday to Friday from 9:00 am to 6:00 pm, occasional weekends. How to apply? Interested candidates should apply through this platform. We will contact you as soon as possible. Notes: Knowledge in chemical analysis of drinking and wastewater is a plus. Type of position: Full-time Salary: $15,000.00 per month Benefits: * Savings box * Option for indefinite contract * Free uniforms Work location: On-site employment