**Description** Work in the laboratory to efficiently ensure the maintenance of Natural Gas and Petroleum cylinders. Base – Imboassica – Macaé – RJ 08 hours daily, Monday to Friday\-feira **Responsibilities and duties** Monitor and provide support in cleaning and maintenance of natural gas sampling cylinders; Assess the integrity of pressurized cylinders and issue technical reports when requested; Support the disposal of non-functional cylinders by preparing technical reports; Perform operational checklists after maintenance; Conduct critical analysis of hydrostatic test certificates; Provide support in areas handling pressurized natural gas and petroleum cylinders; Evaluate and perform maintenance on cylinder valves. **Requirements and qualifications** Technical degree in **Mechanical**, recognized by MEC; **Experience** in similar activities; Laboratory Safety Course; Industrial environment experience in large-scale operations is desirable. **Chemical Laboratory Assistant** course – with a workload of 214 hours