The Senior Mining Engineer is responsible for developing and managing short-, mid-, and long-range mine plans at an open-pit copper operation processing approximately 60,000 tons per day (tpd) of leach material. This role ensures optimized mining sequences, haulage, and leach cycle placements, cost-effective operations, safe working conditions, and efficient leach pad utilization, while mentoring junior staff and coordinating with operational and technical teams.

Key Responsibilities:

• Develop and manage daily and weekly mine plans for material extraction, including designing, drill & blast sequence, haulage, and leach pad placements.
• Monitor and reconcile operational performance against short-range plans; implement corrective actions as needed.
• Coordinate closely with operational teams (mining, drilling/blasting, pad stacking, metallurgy) to ensure smooth execution of daily plans.
• Prepare rolling monthly and quarterly forecasts, and annual mining budgets (tonnage, grade, stripping ratios, equipment utilization, and reagent usage).
• Optimize pit sequencing, leach pad lift designs, haulage routes, and waste management strategies.
• Identify and recommend operational improvements to increase productivity and cost efficiency.
• Collaborate with Geotechnical Engineering on slope and dump stability
• Model and steward site water/acid inventories and solution-management infrastructure
• Generate and regularly update life-of-mine plans based on evolving pit designs, geologic models, and economic parameters.
• Conduct pit optimization studies using industry-standard software.
• Provide technical analysis for strategic projects, expansions, and regulatory filings
• Initiate Kaizen/LEAN projects that deliver quantified $/t mined savings
• Mentor and support junior mine planning engineers, facilitating their professional growth.
• Interface effectively with cross-functional teams, including geology, metallurgy, Mine Operations, environmental, and safety.
• Promote and enforce high standards of safety and environmental responsibility across mine planning activities.

Job Requirements:

• Education & Certification: Bachelor's degree in Mining Engineering
• Minimum 5 years' experience in open-pit mining engineering with direct experience or responsibility for short-, mid-, and long-range mine planning.
• Specific experience in large-scale copper operations utilizing heap or dump leach processes is highly desirable.
• Proficiency in mine planning software: MineSight/Hexagon, including Planner, MPSO and pit optimization tools.
• Proficiency with fleet-management/dispatch systems and data analytics tools (SQL, Python, Power BI)
• Strong knowledge of haulage modeling software
• Excellent analytical and problem-solving abilities with expertise in mine scheduling and cost optimization.
• Strong interpersonal, leadership, and communication skills; capable of clearly presenting technical data to various stakeholders.
• Comprehensive understanding of regulatory compliance
• Commitment to a strong safety culture and responsible environmental management practices.

*All employees are subject to annual physical examinations as a condition of employment.

A core value of ASARCO LLC is "Safety First." The Company is committed to help employees continuously improve their efforts to work in the most safe, inclusive, socially and environmentally responsible manner practicable. Employee safety and health, both on and off the job, are critically important to the Company. Therefore, ASARCO LLC requires employees to have and effectively demonstrate good working knowledge of modern safety systems. Each employee will take prime responsibility for ensuring that s/he works within all required safety procedures and processes.

ASARCO LLC is an equal opportunity employer. Candidates must possess a current and valid driver's license. Offers of employment are contingent upon a successful criminal background check and pre-employment physical including a drug screen.

ASARCO LLC offers an excellent low-cost benefits package for medical/prescription/ dental/vision, disability coverage, life insurance and other optional coverage and 401(k) plan with company match.