Expressions of Interest

Job ID

931565

Job Type

Permanent Full Time

Location

Australia - Muswellbrook, Australia - Newcastle, Australia - Singleton, NSW

Categories

Trade - Heavy Diesel Fitter

Applications close

26 Sep 2025 AUS Eastern Standard Time

Make Your Mark

Every day, all around the world, Thiess supports and celebrates our people. We recognise talent and reward transparency. We champion diversity and embrace change.

Join us. Hone your skills and develop new ones. take on big challenges and grow, through mentorship, collaboration, and empowerment.

Thiess is the place to make things happen.

About The Role

Thiess invites applicants to apply for the Expressions of interest for Heavy Diesel Fitter positions. We have multiple roles across our NSW Projects located in Singleton and Muswellbrook regions following various rosters. We have Roving field service, Workshop and on-site field service options.

We have several different roster options available to suit your lifestyle.

• 5/4, 5/4, 5/5 Rotating roster
• Mon-Thurs 12 hour Day shift
• 5/2, 4/3 Day shift
• Mon-Fri 10.5 hour Day shift

Various aspects of this role include

Workshop Crew

• Perform the servicing, repair and maintenance of large-scale mobile mining equipment including CAT Trucks, Dozers and Graders, and other ancillary equipment as directed in accordance with Thiess servicing, lubrication, and maintenance systems documentation.

Rebuild Crew

• Work in a brand new rebuild workshop facility with an overhead crane.
• Conducting major rebuilds of the mobile fleet, including; CAT 793 & 789 Trucks, CAT D10 & D11 Dozers, CAT 24M Graders.

Field Crew – Breakdowns

• Perform the servicing, repair and maintenance of large-scale mobile mining equipment including; Liebherr 9800, 9350, 996 Excavators & semi-autonomous CAT Drills.
• As well as Terex Drill, CAT Trucks and Dozers and other ancillary equipment as directed in accordance with Thiess servicing, lubrication, and maintenance systems documentation.

Heavy Crew – Excavator & Drill

• Perform the servicing, repair and maintenance of large-scale mobile mining equipment including Liebherr 9800, 9350, 996 Excavators & CAT 6250, 6310 Autonomous Drills as directed in accordance with Thiess servicing, lubrication, and maintenance systems documentation.
• Completing planned maintenance shutdown work including but not limited to major component change outs, diagnosis and troubleshooting and reliability strategies.

Roving Field Service

• Advanced breakdown and failure diagnostics on equipment

• Machine overhauls and planned component changes

• Mobilisation of fleets into and between our projects

• Routine servicing, repair, and maintenance of mobile mining equipment on multiple Thiess and client sites

About You

This position will suit someone who has experience maintaining the following machinery:

• Caterpillar Haul Trucks

• Caterpillar Loader

• Caterpillar tracked and ancillary equipment.

• Komatsu tracked equipment.

• Experience maintaining Liebherr Excavators (not essential but highly regarded)

Position requirements

• Trade Certificate as a Plant Mechanic or equivalent

• Valid Australian Drivers licence

• Valid Australian Citizenship or visa

• Post-trade experience in maintenance, diagnosis, component changeouts, and servicing of heavy earth moving equipment.

• Self-motivated with a strong work ethic

• Any of the following will be highly regarded:

• Experience maintaining Liebherr Excavators

• Working a heights

• MDG25

• High Risk Work Licence - WP, DG, LF etc

What Thiess Can Do For You

• Permanent full-time positions with various rosters available

• • Overtime available

• Thiess' commitment to training & development.

• Salary sacrifice options – Flights & novated leasing

• Range of corporate discounts including health insurance (Medibank), travel & retail products.

How to Apply

At Thiess, we partner with our clients to deliver excellence in open cut and underground mining in Australia, Asia and the Americas. For more than 85 years, we have operated in diverse commodities, geologies, environments and cultures. Our team uses global insight to optimise solutions and create value for each project, positioning them for optimal efficiency, productivity and cost performance, backed by how we meet our commitments. Thiess is committed to being at the forefront of sustainable mining, leveraging the power of our people and technology to support clients in their journey to more sustainable enterprises.

We recognise the value of an inclusive and diverse workplace through our vision of everyone matters always. We're focused on creating an inclusive environment to allow our people to bring their best self to work because they feel safe, included and empowered.

Visit our website to learn more –