Senior Mineral Process Engineer

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Senior Mineral Process Engineer

Date: Oct 23, 2026

Location: Tucson, AZ, US

Company: Hatch

Requisition ID: 95521

Job Category: Metals

Location: Tucson,AZ,United States

Join a company that is passionately committed to the pursuit of a better world through positive change. With more than 65 years of business and technical expertise in mining , energy , and infrastructure ,our 10,000 colleagues in 150 countries tirelessly work toward bettering the industries in which we operate. With practical solutions that are safe, innovative and sustainable, we think globally while acting locally.Are you looking for an opportunity to join a diverse group of professionals who are committed to remaining exceptional? We look forward to hearing from you.

If it isn't grown, it's mined. Our mining and metals teams help our clients to safely and sustainably mine the minerals and metals used in our everyday lives. Want to play a part of innovating and optimizing the mining life cycle on greenfield and brownfield facilities?

The Senior Process Engineer will be part of an engineering team providing engineering services and/or field support. Client liaison and maintaining the focus of the project on achieving unprecedented and sustained business results for the client is a large part of the work.

The role will require the engineer to retain a high-level understanding of the project with respect to the environmental, community, business and financial aspects to guide the client and Project Manager’s decisions related to achieving the process objectives of the project.

The role will require the engineer to oversee, guide and develop solutions in all areas of the process plant across various systems, unit operations and process equipment. Specific tasks may include the development of process engineering deliverables; solutions to infield problems; and involvement in the execution and commissioning of these solutions.

The Senior Process Engineer may be required to act as Lead Process Engineer, on specific assignments, responsible for coordinating the process engineering team, oversee and guide the development of process engineering deliverables ensuring they meet the project’s scope, are delivered on schedule and budget, and meet Hatch’s quality standards. Experience in Concentrator design for various commodities is preferable, such as Gold, Lithium, Nickel, Copper, PGM’s, Copper, Lead, Zinc, Mineral Sands amongst others.

Key Responsibilities Include:

• Perform process engineering tasks on Minerals Processing projects, in a variety of commodities
• When requested, act as Lead Process Engineer on projects or studies
• Operate with full competence and independence in the execution of all design calculations, design criteria, in the compilation and execution of equipment lists and calculations.
• Develop new criteria/calculations where required, maintaining high levels of accuracy. Provide frequent training, guidance and supervision to junior colleagues
• Actively engage with clients to understand project requirements
• Process scope definition and technology selection
• Define the process design criteria
• Define the process block flow diagram and unit operations
• Compilation of Process Flow Diagrams, along with associated mass and energy balance calculations
• Undertake trade off studies to resolve options
• Identify, scope and manage process test work (on site or laboratory based)
• Conduct capacity analysis for existing plants
• Select the equipment for projects
• Carry out engineering design calculations and equipment sizing calculations
• Prepare specifications of process attributes for equipment, through compilation of process datasheets (or process input to general datasheets).
• Compilation of Process Description
• Design of the process control logic adhering to appropriate safety standards, and documentation into Functional Descriptions
• Display full competence and independence in the compilation of P&IDs and all levels of control philosophies.
• Ensure process specifications portray the appropriate information and design intent and review of equipment bids
• Liaising with other discipline engineers to ensure designs conform to process requirements
• Contribute to hazard studies
• Compile operating cost estimates including estimation of consumables, labor, maintenance materials and power
• Provide input to capital cost estimates
• Prepare well written project reports
• Play a lead role in site commissioning of new equipment and process systems
• Participate in the preparation of proposals and other business development initiatives.

Qualifications and Experience:

• Chemical Engineering, Metallurgical Engineering or Mineral Processing degree.
• Minimum of 8 years’ experience
• Extensive design, commissioning and/or operational experience of minerals processing equipment (comminution, flotation, DMS, gravity separation, screening, thickening and filtration)
• Experience in scoping and management of metallurgical test work programs (bench scale, pilot scale, on-site testing)
• Experience in modelling of minerals processing equipment and systems
• Strong client focus.
• Ability to lead engineering tasks on a project, within the allocated budget and schedule, including mentoring and guidance of junior colleagues and professional interaction with other project disciplines
• Ability to manage individuals to attain quality, cost and schedule objectives
• Collaborate on exciting projects to develop innovative solutions

Don't meet every single requirement? You don't need to. At Hatch, we are building a diverse, inclusive workplace that fosters innovation.

We're committed to fostering a workforce that reflects the diversity of the communities in which we operate and serve. Hatch is an Equal Opportunity Employer that considers applicants without regard to age, race, color, national origin, citizenship, religion, creed, gender, sexual orientation, marital status, disability, veteran, or any other protected status. If you have any accommodation requirements, please let us know. We'll do our best to meet your needs in accordance with applicable local legislation.