Job Summary: As a Senior Mechanical Engineer, you will be responsible for mechanical engineering studies, technical support, and problem resolution to maximize production and maintain technical integrity. Key Highlights: 1. Maximize production and maintain technical integrity 2. Support the implementation of Reliability Excellence principles 3. Optimize equipment availability and maintenance costs Shape Your World At Alcoa, you will become an essential part of our purpose: to turn raw potential into real progress. The way we see it, every Alcoan is a work-shaper, team-shaper, idea-shaper & world-shaper. This is your opportunity to help shape the future of sustainability with world-changing innovations and low-carbon technologies. Become a valued member of the team transforming the aluminum industry and revolutionizing how the world lives, builds, moves, and connects. Join us and shape your world. About the Role: As a Senior Mechanical Engineer at the Alumar Port in São Luís, Maranhão, you will conduct mechanical engineering studies, provide technical support for operations and maintenance, analyze and resolve issues to maximize production while maintaining technical integrity and contributing to achievement of company goals. You will supervise engineering projects to achieve necessary improvements in the production process within quality, safety, and environmental standards. You will be responsible for ensuring continuous equipment performance, including rapid resolution of process equipment unavailability and identification of issues requiring further evaluation and support from reliability engineering resources. Other key responsibilities include: * Provide necessary engineering support to implement Reliability Excellence principles to optimize operational reliability of process equipment in designated areas through systematic identification and investigation of recurring and/or costly process equipment failures; * Support reliability engineers in developing equipment maintenance strategies and ensure implementation of specified strategies; * Conduct root cause analysis, failure mode and effects analysis (FMEA) for recurring failures; * Support/participate in implementing planned maintenance to optimize equipment availability while seeking optimization of maintenance costs; * Support implementation of key Alcoa Business System (ABS) principles using Autonomous Maintenance (AM) tools to optimize overall labor productivity; * Participate in capital project reviews, ensuring compliance with technical standards (Alcoa and ABNT) and occupational health and safety regulations; * Analyze current equipment performance data for the area, identify occurrences of recurring and/or costly failures, and provide recommendations to optimize sectoral/facility performance. What You Can Bring to This Role: * Education: Mechanical Engineering degree with active CREA registration. * Preferred: Advanced English proficiency (written, reading, and spoken); * Experience in Mechanical Maintenance within large-scale industrial settings (refineries, steel mills, and/or mining); * Preferred experience in maintenance of mineral transportation equipment (conveyor belts and stackers) and knowledge of port equipment; * Willingness to reside in São Luís, Maranhão (onsite work arrangement). What We Offer: * Competitive compensation and benefits packages; * Alcoa Academy with robust development programs; * Telemedicine and tele-nutrition services; * Recognized as one of the best companies to work for by the Great Place to Work program; * Recognized by the Exame Diversity Guide as one of the companies with best practices related to inclusion, equity, gender, ethnicity, race, persons with disabilities (PCDs), and LGBTQIA+ individuals. Additional Information: * When applying, please remember to attach your resume. * You will only be contacted if selected for an interview; this process may take up to four weeks from the job posting closing date. Application Deadline: 02/23/2026 #LI-KS1 About the Location The Alumar Consortium, managed by Alcoa, is located 25 kilometers from the center of São Luís - MA and began operations in 1984. It comprises companies with a tradition in alumina and aluminum production, holding varying stakes in the two facilities that constitute the Complex. At Alcoa, we are committed to generating value in our relationships with all stakeholders in our business, communities, and environment. We build inclusive and secure environments so that our people can live and express themselves as they please. With the aim of attracting and retaining diverse talent, the company maintains inclusion groups that promote internal and external activities to value human diversity and plurality as a way of enriching one's own values. We are values led, vision driven and united by our purpose of transforming raw potential into real progress. Our commitments to Inclusion, Diversity & Equity include providing trusting workplaces that are safe, respectful and inclusive of all individuals, free from discrimination, bullying and harassment and that our workplaces reflect the diversity of the communities in which we operate. This is a place where you are empowered to do your best work, be your authentic self, and feel a true sense of belonging. Come join us and shape your career! Your work. Your world. Shape them for the better.