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Title:  Chief Hydrogeologist

Requisition ID:  26183

Phoenix, AZ, US, 85004-2121

Category:  Scientific Services

Freeport-McMoRan is a leading international mining company with headquarters in Phoenix, Arizona. We operate large, long-lived, geographically diverse assets with significant proven and probable reserves of copper, gold, and molybdenum. The company has a dynamic portfolio of operating, expansion and growth projects in the copper industry. Freeport-McMoRan is one of the world’s largest publicly traded copper producers, the world’s largest producer of molybdenum and a significant gold producer. We have a long and successful history of conducting our business in a safe, highly efficient and socially-responsible manner.


We have the assets, the talent, the drive and the financial strength to provide attractive and rewarding careers of our employees. We encourage you to take the time to explore the opportunity to advance your career at Freeport-McMoRan.


Lead Company’s modeling team and develop and utilize numerical and analytic models to simulate groundwater flow and transport under steady-state and transient conditions. Modeling applications may include: Site and Basin-Scale Industrial Remediation; Groundwater Recharge, Storage, and Recovery; Source Water and Aquifer Hydrologic Characterization; Integration of Groundwater and Surface Water models; and providing technical support to the water resources team reporting to the Director of Water Resources in the Land and Water Division.

  • Construct and apply numerical models to simulate groundwater flow, groundwater/surface water interactions and transport under steady-state and transient conditions, including inverse modeling methods.
  • Apply knowledge of numerical methods, flow and transport modeling codes, and analysis of spatial data to independently develop tools that inform on-site and regional water resources evaluations.
  • Evaluate and calibrate groundwater model performance to assist in dewatering design and planning.
  • Conceptualize and plan all aspects of potential projects; prepare scopes of work and Requests for Proposal; evaluate consultant submittals and recommend consultant selection; oversee consultant's project work; edit work products; and manage project budgets and perform other project management duties.
  • Perform hydrogeologic assessments and oversee groundwater and surface water investigations for operations. Work involves research, compilation, and interpretation of sometimes complex hydrogeologic data.
  • Maintain and prepare records and reports and present technical evaluations and plans.
  • Work independently and with multi-disciplined teams to meet project objectives.
  • Perform other duties as requested.



  • Bachelor’s degree in Geology, Geological Engineering, Hydrology, or related discipline and seven (7) years of related experience OR
  • Master’s degree in Geology, Geological Engineering, Hydrology, or related discipline and seven (5) years of related experience
  • Knowledge of the principles and methods used in complex hydrogeological analyses, including groundwater modeling; production well siting, design, installation, and testing; and appropriateness of different drilling methods and geophysical techniques.
  • Proficiency in working with groundwater and surface water flow modeling, and aquifer testing.
  • Experience using GIS software, including creating and maintaining maps and geodatabases.
  • Proficiency in working with physical laws that govern the flow of water in saturated and unsaturated porous media and fracture dominated systems.
  • Experience developing hydrologic and hydro-geologic analyses using USGS groundwater/surface water flow models, particularly MODFLOW.
  • Experience conducting hydrologic field investigations and preparing technical reports.
  • Experience interpreting geophysical logs to identify lithology, permeability conduits, and the presence or absence of water.
  • Capable of communicating effectively, both orally and in writing.
  • Skilled in managing hydrogeological projects and budgets.
  • Ability to research and analyze information of considerable difficulty with attention to detail and draw valid conclusions.
  • Capable of organizing and managing multiple complex projects concurrently and work under pressure with frequent priority changes.
  • Ability to work with minimal supervision and take initiative.
  • Proficiency in Microsoft Office Word, Excel, PowerPoint, and Outlook.
  • Ability to work with general office equipment such as a personal computer and keyboard, facsimile machines and photocopier.
  • Ability to develop and maintain awareness of occupational hazards and safety precautions. Skilled in following safety practices and recognizing hazards.
  • Must possess or be able to obtain a valid Mine Safety and Health Administration (MSHA) Certification.


  • Eight (8) to ten (10) years of practical experience in the field of hydrogeology.
  • Analytical and numerical groundwater modeling experience. Comfortable familiarity with MODFLOW/MT3D, newer versions of MODFLOW such as USG or MODFLOW6; FEFLOW; and other codes.
  • Proficient in speaking and writing in Spanish.
  • Experience using programs – FEFLOW, MIKE Mine, GoldSim, Power BI, HEC-RAS and/or HEC-HMS.


  • Position is in busy, non-smoking office located in Phoenix, AZ.
  • Location requires mobility in an office environment; each floor is accessible by elevator.
  • Availability to travel domestically and internationally (+/- 20%). Position requires travel to field locations by automobile and air travel.
  • Some work is in a mine or manufacturing plant setting, which may include exposure to extremes in temperature and humidity, moving mechanical parts, risk of electrical shock, toxic chemicals, explosives, fumes, or airborne particles.
  • While performing the duties of this job, the employee is regularly required to stand, sit, demonstrate manual dexterity, climb stairs and ladders, work on elevated platforms, talk, hear and see.
  • Occasionally may be required to lift moderately heavy objects (up to 30 pounds) during the course of the workday.
  • Personal protective equipment is required when performing work in a mine, outdoor, manufacturing or plant environment, including hard hat, hearing protection, safety glasses, safety footwear, and as needed, respirator, rubber steel-toe boots, protective clothing, gloves and any other protective equipment as required.
  • Freeport-McMoRan promotes a drug/alcohol free work environment through the use of mandatory pre-employment drug testing and on-going random drug testing.

Freeport-McMoRan has reviewed the jobs at its various office and operating sites and determined that many of these jobs require employees to perform essential job functions that pose a direct threat to the safety or health of the employees performing these tasks or others.  Accordingly, the Company has designated the following positions as safety-sensitive:

  • Site-based positions, or positions which require unescorted access to site-based operational areas, which are held by employees who are required to receive MSHA, OSHA, DOT, HAZWOPER and/or Hazard Recognition Training; or 
  • Positions which are held by employees who operate equipment, machinery or motor vehicles in furtherance of performing the essential functions of their job duties, including operating motor vehicles while on Company business or travel (for this purpose “motor vehicles” includes Company owned or leased motor vehicles and personal motor vehicles used by employees in furtherance of Company business or while on Company travel); or
  • Positions which Freeport-McMoRan has designated as safety sensitive positions in the applicable job or position description and which upon further review continue to be designated as safety-sensitive based on an individualized assessment of the actual duties performed by a specifically identified employee.

Equal Opportunity Employer/Protected Veteran/Disability

Job Segment: Geology, Hydro, Hydrogeology, Hydrology, Engineer, Engineering, Science

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