Date: August 12, 2025

Company: Copper World, Inc.

Role Title: Sr. Short Term Planning Engineer Reports to: Miner Planning Superintendent Direct Reports: Yes Job Type: Full-time, Regular Location: Helvetia, AZ

About Hudbay: Hudbay (TSX, NYSE: HBM) is a copper-focused mining company with three long-life operations and a world-class pipeline of copper growth projects in tier-one mining-friendly jurisdictions of Canada, Peru and the United States.

Hudbay’s operating portfolio includes the Constancia mine in Cusco (Peru), the Snow Lake operations in Manitoba (Canada) and the Copper Mountain mine in British Columbia (Canada). Copper is the primary metal produced by the company, which is complemented by meaningful gold production. Hudbay’s growth pipeline includes the Copper World project in Arizona, the Mason project in Nevada (United States), the Llaguen project in La Libertad (Peru) and several expansion and exploration opportunities near its existing operations.

The value Hudbay creates and the impact it has is embodied in its purpose statement: “We care about our people, our communities and our planet. Hudbay provides the metals the world needs. We work sustainably, transform lives and create better futures for communities.” Hudbay’s mission is to create sustainable value and strong returns by leveraging its core strengths in community relations, focused exploration, mine development and efficient operations.

Mission: To create sustainable value and strong returns by leveraging our core strengths in community relations, focused exploration, mine development and efficient operations.

Purpose of Role: The Senior STP Engineer is responsible for developing, optimizing, and implementing daily, weekly, and monthly mine plans that ensure a safe, efficient, and cost-effective extraction of ore and waste in Hudbay Copper World open-pit mining operation. This role focuses on translating long-term strategic goals into actionable operational plans, managing geological and geotechnical constraints, and collaborating closely with mine operations, processing, geology, and other technical teams to maximize production and achieve key performance indicators. Role Accountabilities: Mine Plan Development & Optimization: Develop detailed daily, weekly, and monthly production schedules (dig plans, drill and blast plans, haulage plans) that align with the overall mine strategy and budget. Optimize short-term plans to maximize ore recovery, minimize dilution, optimize haulage routes, and ensure efficient equipment utilization (trucks, excavators/shovels, drills). Incorporate geological models, geotechnical parameters, metallurgical recoveries, processing constraints, operating cost and survey data into short-term plans. Generate practical, safe and achievable plans considering operational constraints, equipment availability, as well as Social, Environmental and Permitting regulations.

Ore Control – Ore/Waste Delineation: Interpret geological and assay data (blast hole assays, chip samples, trench samples) to create daily/weekly ore polygons and dig block boundaries. Develop and update ore control (stp) models and block models based on incoming data. Define precise ore and waste outlines (polygons) for excavation, ensuring accurate classification of material. Minimize ore dilution and maximize ore recovery through effective boundary management. Implement and manage ore control procedures, including sampling protocols, data management, material routing (Mill Feed / Stockpile /Construction/ Waste), and QA/QC processes for blast holes and other grade control samples. Monitor and reconcile production including Mill feed grades against planned grades and geological models. Management of Stockpiling. Identify discrepancies in grade data, ensuring data integrity. Communicate ore-related risks and opportunities to Geology, Operations and technical teams.

Performance Monitoring & Reporting: Monitor actual production performance against planned targets on a daily and weekly basis. Identify variances, analyze root causes, and propose corrective actions to maintain plan compliance. Prepare and present regular performance reports to management, highlighting achievements, challenges, and recommendations. Update and maintain relevant mine planning databases and systems.

Collaboration & Communication: Work closely with Operations, Geology, Survey, Geotechnical, and Processing departments to ensure seamless execution of plans and resolve operational issues. This interaction will require continuing field visits and inspections. Communicate short-term plans clearly and effectively to frontline supervisors and operators. Participate in daily/weekly production meetings, providing technical input and support. Foster a collaborative environment focused on safety, efficiency, and continuous improvement

Technical Analysis & Problem Solving: Conduct detailed analysis of operational data to identify opportunities for improvement in productivity, cost, and safety. Utilize mine planning software (e.g. MineSight, Deswik) to develop, evaluate, and optimize plans. Develop and implement solutions to address operational challenges, geological complexities, and unforeseen site conditions. Conduct scenario analysis to evaluate different planning options and their potential impact.

Safety & Compliance: Ensure all planning activities adhere to company safety policies, environmental regulations, and relevant mining legislation. Incorporate safety considerations into all mine designs and operational plans. Actively promotes a strong safety culture within the team and across the operation.

Mentorship & Development: Mentor and guide junior mine planning engineers, sharing knowledge and best practices. Contribute to the development of standardized procedures and workflows within the mine planning team. Stay abreast of industry best practices and technological advancements in mine planning.

Minimum Qualifications and Education: Bachelor’s degree in mining engineering or a related field (e.g., Geological Engineering). Minimum of 5-8 years of experience in mine planning for open-pit operations, with a strong focus on short-term planning and ore control. Proficiency in using mine planning software packages (Minesight, Deswik, or similar). Strong understanding of open-pit mining methods, equipment capabilities, and operational processes. Solid understanding of geological principles, geotechnical considerations, and their impact on mine planning. Demonstrated ability to develop practical, safe, and cost-effective mine plans. Excellent analytical, problem-solving, and decision-making skills. Strong communication (verbal and written), interpersonal, and presentation skills. Ability to work effectively in a team-oriented environment and manage multiple priorities. Proficiency in Microsoft Office Suite (Excel, Word, PowerPoint). Valid driver's license.

Preferred Qualifications: Postgraduate qualification in Mining Engineering or a related field. Experience with advanced optimization techniques in mine planning. Familiarity with geological modeling software. Experience in a similar commodity (e.g., gold, copper, iron ore).

NOTE: This job description is not intended to be all-inclusive. Employees may perform other related duties as needed to meet the ongoing needs of the organization. Other Requirements: Physical – The physical demands described here are representative of those that must be met by an employee to perform the essential functions of this job successfully. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; sit; use hands to finger, handle or feel; and reach with hands and arms. The employee is occasionally required to climb or balance; stoop, kneel, crouch, or crawl; and taste or smell. The employee must regularly lift and/or move up to 10 pounds, frequently lift and/or move up to 25 pounds, and occasionally lift and/or move up to 50 pounds. Specific vision abilities may be required for this position. Work Environment – The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. The work environment will necessitate work near moving mechanical parts and outside weather conditions such as hot and/or dry conditions. Work will be conducted in locations where noise, fumes, dust, toxic or caustic chemicals, and vibration may exist. Employee will be expected to drive a company vehicle, rental vehicle and/or his/her own vehicle in the course of performing the job, Employee must be able to perform the physical functions of operating a motor vehicle, including use of eyes, ears, arms, hands, legs, and feet. Employee must be able to prove that he/she has a current and valid driver's license.

Why Hudbay? At Hudbay, our values of Dignity & Respect, Caring, Openness, and Trustworthiness are embedded into our culture by the way we work and how we interact with one another. We pride ourselves in providing our employees with competitive total rewards that include: Annual performance bonuses Affordable medical, dental and vision benefits for you and your family. Company paid Life insurance, AD&D, Short- & Long-term Disability. 401(k) plan with employer contribution/match An Employee Share Purchase Plan with contribution matching Employee Assistance Program Paid time off, paid sick time and holiday pay.

Regular performance appraisals to acknowledge our employees for their contributions, strengths and work well done. Hudbay is an Equal Opportunity Employer. Candidates may be required to undergo educational and criminal background checks. Chosen candidates will be required to successfully pass a physical and drug screening.