Senior Mining Engineer Site Location Sahuarita, Arizona, United States Job Details 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. Requirements 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. Our client 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. Our client 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. Pay Type Salaried