The Opportunity

MacKellar is seeking an experienced Maintenance Supervisor to lead our maintenance team at Middlemount Mine. This is a hands-on leadership role overseeing the day-to-day maintenance and repair activities across our fleet of 400–600 tonne Liebherr excavators. Working an 8/6 day shift only roster, you'll play a key role in driving safe, reliable and cost-effective maintenance outcomes while leading and developing a skilled team of tradespeople.

You'll be responsible for providing visible leadership across the workshop, setting clear expectations around safety, performance and accountability, and ensuring maintenance activities are completed efficiently and to a high standard.

Why Join MacKellar?

- 8/6 Day Shift Only roster
- Company vehicle supplied
- Competitive remuneration
- Long-term contract with an established on-site workshop
- Opportunity to lead an experienced maintenance team
- Camp accommodation conveniently located just 10 minutes from site

Key Responsibilities

- Lead and coordinate daily maintenance and repair activities across the Liebherr excavator fleet
- Oversee maintenance schedules, ensuring work is completed safely, efficiently and within budget
- Provide hands-on, visible leadership, setting transparent expectations around safety and work standards
- Monitor team performance, productivity and maintenance costs to achieve operational targets
- Ensure maintenance activities, reporting and documentation are completed accurately and consistently
- Develop a positive,



accountable team culture built around communication, teamwork and continuous improvement
- Identify opportunities to improve maintenance processes, equipment reliability and overall workshop performance
- Promote and maintain a strong safety culture, ensuring compliance with site requirements and procedures

About You

To be successful in this role, you will bring:

- Extensive experience supervising maintenance teams, ideally with a background in large-scale excavator maintenance
- Strong exposure to Liebherr excavators will be highly regarded
- A recognised mechanical trade qualification
- Demonstrated leadership capability with a strong focus on safety, team performance and accountability
- Current Mining Supervisor competencies (G1, G8, G9) – formerly S1, S2, S3
- Current G2 – Carry out the Risk Management Process (RIIRIS402D)
- Current Standard 11 and a valid Driver's Licence

About MacKellar

With over 60 years of experience in mining and civil earthmoving, MacKellar is a trusted name in the resources sector. We pride ourselves on delivering quality equipment and maintenance solutions while building strong, long-term partnerships with our clients. When you join MacKellar, you become part of a business that genuinely values its people, prioritises safety and respects the communities in which we operate.

We welcome diverse perspectives, skills and experiences and believe they make us stronger as a team.

Only applicants who meet the required experience and qualifications will be contacted.

📌 Maintenance Supervisor (Excavators) (Mackay)
🏢 MacKellar Group
📍 Mackay