Senior Geotechnical Engineer

Description

Job Summary: Nexa is seeking a Senior Geotechnical Engineer to plan, execute, and validate laboratory tests on tailings, evaluate results, and provide technical support for underground mining operations—ensuring safety and optimization. Key Highlights: 1. Experience in paste fill and underground containment structures. 2. Lead technical discussions and influence data-driven decisions. 3. A leading zinc production company focused on sustainable development. In line with our commitment to diversity and inclusion, we actively encourage applications from **women** for this position. Therefore, we encourage all qualified individuals to apply, regardless of gender, identity, or any other characteristic, and join our team for the **Senior Engineer** role in the **Geotechnical Engineering** area in **Aripuanã\-MT**. We are a company that connects and integrates our business with societal needs. This is how we develop mining—always aligned with change, driven by committed, inspired, and continuously developing people. Join Nexa and be part of a mining company that moves with the world! **Responsibilities and Duties** * Plan, execute, monitor, and validate laboratory tailings tests applied to paste fill; ensure technical quality of tests for: density and specific gravity; particle size distribution and % fines; rheological tests (slump, consistency, flow); mechanical strength tests (UCS); tests at various curing ages; * Evaluate and interpret laboratory test results, ensuring reliability, traceability, and repeatability; * Identify deviations in paste fill behavior and propose technical corrective actions; * Translate test results into operational technical recommendations; * Provide technical support for underground mining planning, considering: stope sequencing; structural function of paste fill; minimum strength requirements; * Participate in defining and reviewing paste fill design criteria; * Develop and maintain technical spreadsheets, databases, and dashboards; * Monitor KPIs for: paste fill strength; result variability; binder consumption; cost per m³ and cost per MPa; planned vs. actual (paste placement), achieved vs. designed strength; * Support technical optimization focused on cost reduction without compromising safety; * Evaluate containment structures (bulkheads and walls), ensuring stability and safety; * Conduct technical inspections and audits to ensure procedural compliance. **Requirements and Qualifications** **Required Qualifications:** * Bachelor’s degree in: Mining Engineering (with emphasis in Geotechnical Engineering); Civil Engineering (with emphasis in Geotechnical Engineering); or Geology (with strong geotechnical focus); * Experience in paste fill and underground containment structures. * Knowledge of soil/tailings mechanics, behavior of cementitious materials, and rheology; * Binder dosage and cost optimization; **Desired Qualifications:** * Postgraduate studies or Master’s degree in: * Geotechnical Engineering * Soil Mechanics * Mine Geomechanics * Tailings Skills and Competencies * Proactive and inquisitive profile * Strong ability to: * Lead technical discussions; * Influence decisions based on data; * Communicate effectively and possess systemic vision * Work comfortably in multidisciplinary environments **Additional Information** ***Nexa believes in fostering a plural environment where everyone feels comfortable and empowered to be themselves.*** We are one of the world’s largest zinc producers! With over 60 years of experience operating and developing mining and metallurgical assets, our purpose is to integrate mining into an ever-changing world—as an opportunity for sustainable development. We operate eight sites across Brazil and Peru—including three refineries and five mines\-, such as Cerro Lindo, Peru’s largest underground zinc mine, and Cajamarquilla, the largest zinc refinery in the Americas. As a result, we account for 4% of global zinc production and are the only producer of primary zinc metal in Latin America, excluding Mexico. We also produce copper, lead, silver, and gold as co-products. Nexa—mining that evolves with the world.