Maintenance Manager
Castlereagh Coal is an Australian family owned and operated resources company. We run open cut coal mines at Invincible Colliery and Cullen Valley, near the township of Cullen Bullen, approximately 20kms north of Lithgow. The mines operate a range of Caterpillar and Hitachi equipment including excavators, bulldozers, front end loaders, and rigid / articulated dump trucks.
A brief description of our operation.
A small and dynamic excavator/truck mining operation, mining over underground workings.
Approximately 25 mobile plant units.
Progressively rehabilitating old workings.
Dayshift only operations.
Operating an equal opportunity workplace.
Roles and Responsibilities
Lead day-to-day maintenance operations, ensuring reliability, safety, and quality.
Manage budgets, schedules, resources, and KPIs.
Provide strong leadership to crews and peers.
Liaise with other departments to maximise equipment availability.
Maintain client relationships and manage contractors.
Drive continuous improvement and ensure compliance with site requirements
Implement and improve preventative maintenance strategies to avoid foreseeable breakdowns
Ensure introduced equipment is fit for use
Manage Long / Short term planning / Preventative maintenance
Implementation of asset health and continuous improvement initiatives
Forecast maintenance budgets
Ability to use MEX, set up and maintain ongoing site maintenance records
Build relationships with offsite vendors – Priority service / discount rates
The position will be to support a 7 day-dayshift operation, typically a Monday to Friday roster, reporting to the General Manager.
Qualifications and skills:
Plant mechanic trade or similar, maintenance experience and Asset management
Proven leadership in maintenance in mining or industrial setting
Contractor management experience
Health and Safety knowledge
Certificate of Competence for NSW Mechanical Engineer (highly desirable)
Degree in Mechanical or Engineering (desirable)
Cert IV – Frontline management (desirable)
All enquiries and resumes, please email
Applications close, 23rd February 2026.