Oyu Tolgoi’s workforce today is more than 97 per cent Mongolian, and a major strategic focus for the company is to develop a skilled workforce that is continuously learning. We aim to attract the best talent, so that we can together deliver a safe and globally competitive copper business that contributes to the prosperity of Mongolia.
Oyu Tolgoi LLC is operating a copper-gold mine in southern territory of Mongolia. The company aspires a vision ‘Natural wealth to enduring value, knowledge, and skill’, and pursues a mission, 'Together deliver a safe and globally competitive copper business that contributes to the prosperity of Mongolia' to build one of the largest copper-gold mines worldwide.
Engineering Specialist Mine Infrastructure – Infrastructure Maintenance
About your role
We are seeking a Engineering Specialist Mine Infrastructure to join our Underground Maintenance Team, supporting the delivery and ongoing performance of a world‑class underground mine in Mongolia. This is a key role within the owner’s team, responsible for supporting the maintenance, reliability, and upgrades of underground production infrastructure.
The scope of this role includes all aspects of underground infrastructure, notably:
The role will assist in the coordination of the scope development, project schedule, engineering design, tender packages and evaluation, component procurement, contractor management for the infrastructure Improvements and maintenance for the underground Fixed Plant Department.
The role shall ensure that the designs and fabrication are compliant with the Oyu Tolgoi health and safety systems and procedures, ensuring designs and fabricated components are completed to the required standard, quality and international best practices.
Working within the Infrastructure team (Maintenance and Engineering team) and reporting to the Manager Infrastructure Maintenance you will assist and lead the following;
About you
To be successfully considered for this role, you will have the following:
A desire to pass on your wealth of industry experience and knowledge in order to accelerate development of capability and knowledge amongst the company and contractor national workforce.
It will also be beneficial if you have:
About us
Joining the Rio Tinto Oyu Tolgoi Underground Project team is a great opportunity to be part of one of the most exciting developments in copper and gold mining for several decades. The mine contains reserves and resources that make it one of the world’s largest copper-gold deposits.
This mega project is expected to be a major contributor to Mongolia’s development. As part of the Rio Tinto Oyu Tolgoi Underground Project team, you have the ability to contribute to something significant and learn and develop both personally and professionally. We offer a collaborative, high performing environment where success is achieved by working together.
Discover more about Mongolia and Oyu Tolgoi
Mongolia is increasingly becoming a destination for tourism and expatriate residents. As a rapidly developing city, Mongolia's capital Ulaanbaatar is seen as a comfortable, yet exciting place to live. With an array of cultural and social activities available and a growing network of international schools, housing options, and leisure facilities, its home to a growing community of international expatriates.
Located in the South Gobi Desert, just 80 kilometres from the Chinese border, the Oyu Tolgoi open pit mine and camp is a large, well-run and comfortable site with multiple amenities including recreational and sports facilities, a cinema, shops, restaurants and bars catered to a growing community. For more information about OT site, please check out this video.
Where you’ll be working
Oyu Tolgoi is an operating Copper / Gold open pit mine with a brownfields underground mining project. The site is located in the Gobi Desert region of Mongolia. The reserves case for the underground project is in the order of 0.5 billion tonnes of ore to be mined from the 95,000 tonnes per day Hugo North Lift 1 (HNL1) panel cave mine with a 20-year operations life. There is also the potential for 3 further block cave districts to increase mine life beyond 100 years.
Every Voice Matters
At Rio Tinto, we particularly welcome and encourage applications from Indigenous Peoples, women, the LGBTQIA+ community, mature workers, people with disabilities and people from different cultural backgrounds.We are committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success. We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.
Job application closes on September 1st , 2026
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Respect and Inclusion
At Rio Tinto, we particularly welcome and encourage applications from Indigenous Peoples, women, the LGBTQIA+ community, mature workers, people with disabilities and people from different cultural backgrounds.
We are committed to an inclusive environment where people feel comfortable to be themselves. We want our people to feel that all voices are heard, all cultures respected and that a variety of perspectives are not only welcome – they are essential to our success. We treat each other fairly and with dignity regardless of race, gender, nationality, ethnic origin, religion, age, sexual orientation or anything else that makes us different.
We're finding better ways to provide the materials the world needs. Iron ore for steel. Low carbon aluminium for electric cars and smartphones. Copper for wind turbines, electric cars and the pipes that bring water to our home. Borates that help crops grow and titanium for paint.
