About Us:

We’re a Northern Territory family owned and operated business, with local knowledge, local employees and thorough experience working in the Northern Territory climate. We maintain a large, modern fleet of heavy earthmoving equipment, and we’re looking for a reliable 3rd or 4th Year Heavy Diesel & Field Service Mechanicto join our growing team.

The Role:

Our Apprentice Heavy Diesel Mechanic will undertake a structured apprenticeship while gaining practical, hands-on experience in the servicing, maintenance, diagnosis and repair of heavy diesel machinery, earthmoving equipment and associated mechanical systems. Working under the supervision of qualified Heavy Diesel Mechanics, the apprentice will develop the technical knowledge, practical skills and safety awareness required to become a competent and qualified tradesperson.

The position involves working in both workshop and field environments, supporting the maintenance and reliability of the company's fleet of heavy earthmoving equipment, trucks and ancillary machinery. This role suits someone who thrives in a hands-on environment, has good communication skills and the drive to succeed.

This position is not available as FIFO.

Applicants must reside in the Northern Territory.

No relocation assistance is available.

Key Responsibilities :

Mechanical Maintenance and Repairs

· Assist qualified mechanics with scheduled servicing, preventative maintenance and repairs of heavy diesel equipment.

· Assist with diagnosing mechanical, hydraulic, electrical and engine-related faults.

· Undertake basic mechanical repairs and component replacements under supervision.

· Assist with the removal, inspection, repair and installation of mechanical components.

· Learn to inspect, maintain and repair diesel engines, transmissions, braking systems, steering systems and hydraulic components.

· Assist with servicing excavators, graders, loaders, rollers, water trucks, prime movers and other heavy equipment.





· Develop skills in using diagnostic equipment, workshop tools and machinery.

· Assist with breakdown repairs in the workshop and on project sites.

· Maintain accurate service records, maintenance reports and job cards.

Apprenticeship and Training

Mechanical Maintenance and Repairs

- Assist qualified mechanics with scheduled servicing, preventative maintenance and repairs of heavy diesel equipment.
- Assist with diagnosing mechanical, hydraulic, electrical and engine-related faults.
- Undertake basic mechanical repairs and component replacements under supervision.
- Assist with the removal, inspection, repair and installation of mechanical components.
- Learn to inspect, maintain and repair diesel engines, transmissions, braking systems, steering systems and hydraulic components.
- Assist with servicing excavators, graders, loaders, rollers, water trucks, prime movers and other heavy equipment.
- Develop skills in using diagnostic equipment, workshop tools and machinery.
- Assist with breakdown repairs in the workshop and on project sites.
- Maintain accurate service records, maintenance reports and job cards.

Apprenticeship and Training

- Attend and actively participate in all required Registered Training Organisation (RTO) training and assessments.
- Complete practical and theoretical apprenticeship requirements within the prescribed timeframes.
- Maintain an accurate and up-to-date training record or competency logbook.
- Follow instructions and guidance provided by qualified tradespeople and supervisors.




- Demonstrate a willingness to learn new mechanical skills, techniques and procedures.
- Apply knowledge gained through formal training to practical workplace activities.
- Work towards achieving the required competencies for the relevant trade qualification.

Workplace Health and Safety

- Comply with all company Work Health and Safety (WHS) policies, procedures and safe work practices.
- Participate in daily pre-start meetings, toolbox talks and safety training.
- Correctly wear and maintain required personal protective equipment (PPE).
- Identify and report hazards, incidents, near misses and unsafe working conditions.
- Follow safe operating procedures when using hand tools, power tools, lifting equipment and workshop machinery.
- Comply with isolation and lockout/tagout procedures when working on plant and equipment.
- Only undertake work within demonstrated competency and under the level of supervision required.
- Follow safe manual handling practices and use appropriate lifting equipment.
- Maintain a safe, clean and organised work environment.
- Comply with all site-specific safety requirements when working on civil construction projects.

Requirements: All candidates will be required to pass a pre-employment medical, and a drug and alcohol screen.

- Currently completing year 3 or 4 of your trade qualification as a Heavy Diesel Mechanic
- Proven experience working on heavy vehicles and earthmoving plant and equipment
- Experience with CAT, Komatsu, Volvo, or Cummins equipment
- Ability to use diagnostic software and electronic service tools
- Solid knowledge of diesel engines, hydraulics, and electrical systems
- Strong diagnostic, troubleshooting skills and attention to detail
- Current driver’s license (HR preferred but not essential)
- Forklift Licence preferred
- Work in workshop and outdoor environments
- Remote and regional travel will be required
- DIDO Rosters will be required

📌 Heavy Diesel & Field Service Mechanic (3rd or 4th Year Apprentice) (Humpty Doo)
🏢 Arnhem Earthmoving u0026 Mechanical
📍 Humpty Doo