Big Timber, MT 59011 • (39.8 miles) • Full Time • $81,000 to $101,000 / yr • 10/22/2026

Engineer 1, 2, or 3 - Ventilation Location: East Boulder Mine - McLeod, MT Schedule: 5x2, 4x3 - 9-hour days Job Responsibilities and Duties: Maintain and manage the Ventilation system at the Stillwater Mine - primary and secondary. Ensure adherence to standards, policies, procedures and to mine legislation in regard to contaminants and mine gases. Ensure ventilation surveys including air quality, volumes and pressure occur, data compiled and presented to workforce and management every quarter. Participate in emergency responses in the event of a mine fire. Perform ventilation simulations and optimize the mines ventilation system including leakage mitigation, infrastructure improvement, etc. Perform ventilation simulations and complete a write up for designed development and production work

Columbus, MT 59019 • (18 miles) • Full Time • $80,400 / yr • 10/24/2026

Process Control Engineer Location: Columbus, MT Site - Stillwater Mine & East Boulder Mine Schedule: 5x2, 4x3 9hr Shifts Job Responsibilities and Duties: At Sibanye-Stillwater, the Process Control Engineer is responsible for the programming and system maintenance of PLC's and HMI's. This includes the ability to read, create, and understand P&ID's, loops, electrical diagrams, and schematics. The Process Control Engineer will work closely with maintenance personnel for new installation and maintenance of process instrumentation and the electrical distribution system. Promote and maintain a safe work environment, safe work practices, and a strong safety culture. Monitor, program and maintain plant PLC/SCADA control systems, consisting of multiple processors, and remote I/O racks. Interface wi

Columbus, MT 59019 • (18 miles) • Full Time • $129,000 / yr • 10/22/2026

Supervisor - Sr. Engineer Location: Columbus, MT Schedule: 5x2, 4x3 9hr Shifts Job Responsibilities and Duties: At Sibanye-Stillwater, the Supervisor - Sr. Engineer is responsible for owning the fundamental engineering aspects of strategic mine planning and mineral reserves. This role works with the mine sites but is primarily focused on strategic planning and designing of the Life of Mine Plan. Also included in the scope of this role is the creation of annual Mineral Reserves, mining optionality analysis, and the implementation of business improvement efforts at the Montana operations. The Supervisor - Sr. Engineer's primary duties are: Operational Leadership: Foster an inclusive environment that promotes teamwork and innovation, and actively seek feedback from the workforce for continuou

Nye, MT 59061 • (18.2 miles) • Full Time • $81,000 / yr • 10/5/2026

Engineer 1-4 - Rock Mechanics Location: Stillwater Mine - Nye, MT Schedule: 5x4, 4x5 - 11.5-hour days Job Responsibilities and Duties: At Sibanye-Stillwater, the Rock Mechanic Engineer is responsible for carrying out ground control assessments and providing ground control and ground quality recommendations for existing and future mine designs. The Rock Mechanic Engineer will provide input to weekly and monthly planning processes as well as regularly perform underground audits of ground quality and installed ground support for adherence to Company ground control standards. Other responsibilities and duties may include: Promote and maintain a safe work environment, safe work practices, and a strong safety culture. Ensure that Environmental Excellence is practiced with in area of responsibili

Nye, MT 59061 • (18.2 miles) • Full Time • $81,000 to $101,000 / yr • 10/1/2026

Mine Engineer 1-3 Location: Stillwater Mine - Nye, MT Schedule: 5x2, 4x3 - 9-hour days Job Responsibilities and Duties: Provide engineering support for production stope designs and short-range planning. Mine planning includes stope and access design, along with stope infrastructure requirements. Infrastructure encompasses but is not limited to ventilation boreholes, muck passes, mine drainage, and electrical installations. Mining methods include ramp and fill, cut and fill (both mechanized and slusher supported), uphole longhole stopes, and underhand mining with paste backfill. Mine planning includes assessment of ground control needs (in conjunction with rock mechanics engineers), ventilation assessments (in conjunction with ventilation engineer), geological constraints or opportunities (