- Join a global organisation at the forefront of mining innovation
- Excellent work environment where people are valued and respected
- Join an encouraging leadership group, committed to your growth and development
- Permanent role based in Phoenix with periodic international travel
About the role
We are looking for a Principal Mining Engineer – Underground to provide technical expertise to the Rio Tinto Copper assets and studies including the Resolution Project, Kennecott Underground and Oyu Tolgoi Mine. This is a pivotal role in helping Rio Tinto’s realise its vision to become the World’s Best Operator. The role will see you representing the Central Technical function to operational, study and project teams.
We are an open, connected global team that includes some of the industry’s best and brightest minds. We offer competitive, performance-focused remuneration and a wide range of benefits to reward your contribution. With a global reach, the opportunities to develop and grow your career are broad and exciting.
Reporting to the Chief Underground Mining Engineer and working within a dynamic and innovative environment, this role will:
- Provide technical leadership and direction to underground mining studies, ensuring lessons learned and best practices are incorporated appropriate to the individual orebody conditions for optimal business performance.
- Provide technical support to our underground mines, particularly the Resolution project.
- Undertake performance monitoring and evaluation of underground projects and operations, recommend improvement measures and implementation as required.
- Support major hazard management activities associated with studies, projects and operations.
- Develop, document, and continually improve our operations, including lessons learned, best practice standards guidelines, processes and procedures.
- Develop underground mining (stoping and cave mining) expertise and capability across the group, including effective collaboration between assets in maximizing the collective capability in caving and underground mining.
- Improve technical systems and processes within the business, including data quality and utilisation
- Provide strategic advice to senior leaders as well as internal and external stakeholder groups as appropriate.
What you will bring
- A commitment to the safety of yourself and your team
- Recognised bachelors degree in mining engineering
- Extensive underground technical experience in underground mining studies, projects and operations
- Operational experience in cave mining, including mine design, scheduling, draw control and hazard management
- Deswik and PCBC software experience
- Excellent stakeholder engagement capability
- Demonstrated commercial insight, strategic thinking and business acumen.
- Knowledge of risk assessment and management practices
- Sound leadership, coaching and mentoring capability
What we Offer
We are committed to providing our employees with a generous benefits package. Be recognized for your contribution, your thinking, your hard work, and go home knowing you’ve helped the world progress, we provide:
- A safety-focused and inclusive working environment
- Advantageous salary package with annual cash incentive awards (STIP) for eligible employees
- Access to top-tier family-friendly health programs including medical, prescription drug, dental, vision, life insurance coverage, and various voluntary benefits.
- Excellent retirement plan including up to 6% defined company contribution; Generous 401k matching program
- Generous Rio Tinto employee share program, which allows you to purchase Rio Tinto Company shares.
- Comprehensive leave policies which cover all moments that matter in life: PTO (paid time off), paid holidays, and paid bereavement leave.
- A favorable child-caregiver leave program (Up to 100% salary top-up)
- Discount programs for leisure purposes and access to Virgin Pulse with incentives supporting your wellbeing
- Ongoing Employee Assistance Program (EAP) for you and your family; to help in addressing educational opportunities, addiction treatment, depression, stress, domestic issues, financial management, and legal concerns.
- Our team and industry experts are here to support and work with you to explore your learning potential and career goals
Where you will be working
The Rio Tinto Copper group is a global organisation with operations and projects in the U.S. (Kennecott Utah Copper, “RTKC”, and Resolution Copper Project), Mongolia (Oyu Tolgoi), Simandou (Guinea) and Western Australia (Winu Cu-Au project). The portfolio also includes interests in a non-managed joint venture in Chile, in addition to exploration & evaluation interests and other minor investments.
The role is based in Phoenix to primarily support Resolution and our North American assets. We offer a flexible working arrangement with a balance of office-based and work from home. There is an ongoing requirement for additional hours outside the standard working day to support colleagues in alternative time zones. You will be required to travel internationally on a periodic basis (conditions permitting).
About Rio Tinto
Rio Tinto is a leading global mining and materials company. We operate in 35 countries where we produce iron ore, copper, aluminium, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive.
We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs – striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards. But we can’t do it on our own, so we’re focused on creating partnerships to solve problems, create win-win situations and meet opportunities.
Respect and Inclusion
Rio Tinto is committed to equal employment opportunity. All qualified applicants will be considered without regard to race, color, sex, age, religion, national origin, disability, or any other characteristic protected by federal, state, or local law.
We are committed to an inclusive environment where people feel safe, respected and valued. We want our people to feel that all voices are heard and that a variety of perspectives are not only welcome but are essential to our success. We treat all our people fairly and with dignity.
Rio Tinto participates in E- Verify to confirm work authorization. Please visit http://www.ucis.gov/ for more information.
R68019
Rio Tinto is a leading global mining and materials company. We operate in 35 countries where we produce iron ore, copper, aluminum, critical minerals, and other materials needed for the global energy transition and for people, communities, and nations to thrive.
We have been mining for 150 years and operate with knowledge built up across generations and continents. Our purpose is finding better ways to provide the materials the world needs—striving for innovation and continuous improvement to produce materials with low emissions and to the right environmental, social and governance standards. But we can’t do it on our own, so we’re focused on creating partnerships to solve problems, create win-win and meet opportunities.
Rio Tinto is committed to equal employment opportunity. All qualified applicants will be considered without regard to race, color, sex, age, religion, national origin, disability, or any other characteristic protected by federal, state, or local law.
We are committed to an inclusive environment where people feel safe, respected and valued. We want our people to feel that all voices are heard and that a variety of perspectives are not only welcome but are essential to our success. We treat all our people fairly and with dignity.
Rio Tinto participates in E- Verify to confirm work authorization. Please visit http://www.ucis.gov/ for more information.
Start your application
Take your leadership career to the next level.
Where can Rio Tinto take you?
You’re passionate and ambitious with tremendous career aspirations. The breadth and growth of our organisation empowers you to define your ideal career path.
Take a look at Katie’s career journey
Take a look at Katie’s career journey


- 2022 - PresentManager Projects - Energy DevelopmentBrisbane, Queensland, Australia
- 2021Superintendent Operations CentreBrisbane, Queensland, Australia
- 2020Development / Drill and Blast SuperintendentPilbara, Western Australia
- 2019Deputy Quarry ManagerPilbara, Western Australia
- 2018Development SupervisorPilbara, Western Australia
- 2017Senior Engineer of Drill, Blast and SurveyPilbara, Western Australia
- 2016Production EngineerPilbara, Western Australia
- 2015Mine scheduler - 2 week plannerPilbara, Western Australia
- 2014Drill and Blast EngineerPilbara, Western Australia
- 2012Graduate Mining EngineerPilbara, Western Australia
- 2022 – PresentManager Projects – Energy DevelopmentBrisbane, Queensland, Australia
- 2021Superintendent Operations CentreBrisbane, Queensland, Australia
- 2020Development / Drill and Blast SuperintendentPilbara, Western Australia
- 2019Deputy Quarry ManagerPilbara, Western Australia
- 2018Development SupervisorPilbara, Western Australia
- 2017Senior Engineer of Drill, Blast and SurveyPilbara, Western Australia
- 2016Production EngineerPilbara, Western Australia
- 2015Mine scheduler – 2 week plannerPilbara, Western Australia
- 2014Drill and Blast EngineerPilbara, Western Australia
- 2012Graduate Mining EngineerPilbara, Western Australia
Working at Rio Tinto
Help us deliver the materials that make human progress possible.
The plane you’re flying in just landed. You fire up your phone and get your laptop out of the overhead bin. Immediately, you’re in work mode – thousands of miles from your office. Do you ever stop to think about all the materials that make life in the 21st century possible? At Rio Tinto, we discover, develop and deliver the materials that drive human progress. When you work with us, you’ll experience advantages you won’t find anywhere else.
Working in our Operations teams
The most important thing you’ll uncover is your own potential.
Working in Operations at Rio Tinto means you can make a hands-on difference in the discovery and delivery of the materials that make human progress possible. In return, we strive to help you achieve and even exceed your career goals. Join us and experience:
Our application process
01
Apply
The first thing you’ll need to do is apply to the role. You can do this with your LinkedIn profile or you can upload your resume. We’ll also ask you to complete a few questions before you submit your application.
02
Undergo assessments
Our assessments are designed to help us work out whether you are suitable for the role. We will let you know which ones you’ll need to complete.
03
Interview(s)
Our interviews could be in person or online. It’s a great opportunity for us to get to know you a bit better, answer any of your questions and talk about the exciting career opportunity you have applied for.
04
Offers and checks
At this stage, we will let you know if you have been successful. If you have been, we’ll need to conduct a couple of checks, such as a background or security check. You may also need to do a medical assessment depending on the role you have applied for.
05
Join the Rio Tinto team
Once the checks have been completed, we’ll be in touch to talk with you about your start date and answer any questions you may have before you start with us.



















