For 70 years in the market, **CJ Bio**, a company specialized in amino acid manufacturing, is widely recognized for employing sustainable technologies in its production, with a mission to create a better and more sustainable world through its biotechnologies. It holds the largest global market share in lysine, operating 11 plants across 6 countries and maintaining a sales network in 37 countries. CJ Bio is the only company offering the full range of L-amino acids in its portfolio. In 2023, CJ expanded its facility in Brazil—the only plant in Latin America producing lysine, threonine, and tryptophan—making the country self-sufficient in the production of these key ingredients. **Responsibilities and Duties** Responsibilities and Duties: Operate machinery and equipment—both manually and automatically—ensuring their maintenance and cleanliness, while monitoring materials and components. Open and close valves via control supervision systems, adhering to parameters defined in procedures. Inspect equipment conditions using both control supervision systems and on-site inspections, verifying parameter compliance, leaks, cleanliness, functionality, or any other conditions that may affect the process. Collect and analyze process samples. Complete process-related records with accurate operational information. **Requirements and Qualifications** Completed high school education. A technical background in Chemistry, or a degree in Biofuels or Food Technology will be considered an advantage. Prior production experience—preferably in food, fermentation plants, or refineries. Availability to work rotating shifts (6 days on / 2 days off). **Additional Benefits** Medical assistance; Dental assistance; Life insurance; Meal voucher; On-site cafeteria; Shuttle service; On-site parking; Pharmacy benefits; Gympass; Profit-sharing program (PPR); Birthday bonus. CJ Brazil belongs to the CJ Group, which is structured into four distinct business sectors. We hold the largest global market share in lysine, tryptophan, nucleic acid, and valine, with 11 manufacturing plants across 6 countries and sales networks spanning 37 countries. In 2015, we became the world’s first company to develop fermentation-based L-methionine, and our technology has since gained widespread recognition. Certified by the United Nations (UN) as the first Model of Cooperation for Development and as a global partner for sustainable development, CJ believes corporate success is directly linked to the well-being of all its employees and society at large.