About Us

As an ASX-listed company, MLG Oz is a contractor of choice, employing more than 1,400 people across over 30 operational sites. We deliver a comprehensive range of services, including:

- Aggregate and sand supply

- Bulk haulage and integrated site services

- Crushing and screening

- Export logistics

MLG Oz is guided by strong core values and is committed to fostering a diverse and inclusive workplace. We recognise that inclusion drives engagement, builds trust, encourages fresh perspectives, and supports innovation, ultimately enhancing our overall performance. Our people are our greatest asset, and through their collective efforts and contributions, we are able to achieve our objectives while maintaining an uncompromising commitment to the health and safety of our workforce, the environment, and the communities in which we operate.

Due to continued growth, we are seeking an experienced CAT Maintenance Specialist to provide leadership, guidance and mentoring across multiple sites in WA & NT. This is your chance to make a real impact in a supportive, inclusive team culture. With your extensive CAT maintenance experience, you will travel to various sites to provide guidance and mentorship to our site based maintenance teams across WA & NT via presentations and hands on demonstrations on CAT Mobile Plant Equipment - loaders, dozers, graders, dump trucks and more.

To be successful in this role, you will guide and mentor our team while undertaking the following:

- Conduct fault-finding and repairs on mechanical, electrical, and hydraulic systems




- Carry out scheduled servicing and inspections to proactively detect and address wear or faults
- Strip down and rebuild major components of heavy equipment as required
- Diagnose and repair diesel engines, drivetrains, and hydraulic assemblies
- Operate diagnostic software and tools to efficiently identify and resolve issues
- Record all service, repair, and maintenance activities with accuracy and attention to detail
- Adhere to all workplace health and safety standards during daily operations
- Work closely with other technicians to complete complex tasks and major overhauls

About You:

- Australian recognised trade certificate with a minimum 5 years post-trade experience
- 10+ years industry experience
- Certificate III in heavy-duty diesel equipment (or equivalent)
- Robust track record maintaining CAT heavy earthmoving equipment – excavators, trucks, dozers, loaders, graders
- Excellent diagnostic and fault-finding skills
- Ability to communicate effectively and present information clearly
- High level of computer literacy (highly regarded)
- Ability to pass pre-employment medical, drug & alcohol screening
- Ability to meet security requirements (National Police Clearance)

What We Offer:

- Competitive Salary Package
- Nib Health Insurance discount (12%)
- Employee referral program – Earn $6,000+ per successful candidate (conditions apply)
- Salary sacrifice & novated leases
- Approachable management & inclusive team culture
- Recognition & rewards program with cost-of-living discounts
- Professional development and mentoring opportunities

📌 CAT Maintenance Specialist (Kalgoorlie - Boulder)
🏢 MLG Oz
📍 Kalgoorlie - Boulder