Senior Diesel Fitter - NT Based

The Company

Black Cat Civil is a fast-growing, Australian Indigenous-owned civil contractor specialising in the delivery of remote and regional infrastructure projects throughout Queensland and the Northern Territory.

Celebrating 20 years of excellence, Black Cat Civil has evolved into one of Australia’s leading civil construction partners — now home to over 250 skilled employees, a fleet of more than 700 pieces of plant and equipment, and a proud record of delivering 1,800+ projects across Queensland, the Northern Territory, and beyond. Our growth reflects our commitment to quality, reliability, and getting the job done right every time.

About the Role

Black Cat Civil is currently seeking experienced a Senior Diesel Fitter to join the Darwin team. This role will support existing workshop-based staff, with opportunities to future develop your leadership skills with the support of our Workshop Supervisor.

Similar Trades may include, but are not limited to:

- Heavy Diesel Mechanics

- Heavy Commercial Trucks

Successful candidates will be responsible for servicing, maintenance, and repairs of various Caterpillar (CAT) branded mobile plant and heavy equipment, these projects are working across remote regions of the territory, so previous remote work is highly regarded.

Key Responsibilities:

- Perform on-site servicing, preventative maintenance, diagnostics, and repairs on mobile plant and heavy machinery.

- Maintain and repair Caterpillar (CAT) heavy earthmoving equipment, including excavators, loaders, graders, dozers, rollers, trucks, generators, and light vehicles.

- Conduct fault finding and diagnostic troubleshooting using OEM systems and tools.

- Attend breakdowns and provide field service support.

- Complete major engine, transmission, and component rebuilds.

- Prepare and commission new machines to site specifications.

- Complete service documentation, job cards, and maintenance records.

- Liaise with the Fleet Manager and/or Workshop Supervisor to coordinate parts and repairs.

- Ensure compliance with WHS, safety, and quality standards.

Candidate Skills & Experience:

- Trade qualification in Diesel Fitting / Heavy Vehicle Mechanic / Mobile Plant Technology (Cert III or equivalent).

- Minimum 2+ years’ post-trade experience.

- Experience working on heavy earthmoving equipment and civil construction machinery.

- Strong hydraulic and diesel engine experience.

- Proven experience in fault finding, diagnostics, and breakdown response.

- Experience with Caterpillar equipment highly regarded.

- Field service experience highly regarded.

- Air-conditioning (ARC) ticket desirable.

- HR or HC driver’s licence highly regarded.

- Ability to work independently and within a team.

- Strong safety mindset and commitment to quality workmanship.

- Willingness to work locally and travel when required.

What we can offer:

- Permanent full-time employment.

- Competitive hourly rate.

- Weekly pay.

- Long-term career progression opportunities.

- Ongoing training and development.

- Supportive and performance-driven team culture.

Black Cat Civil is a tight‑knit team led by owners Jai and Brendan, where loyalty and performance are genuinely rewarded. In 2025, 65% of our people advanced their skills through internal training and upskilling programs reinforcing our commitment to growing our team from within.

How to Apply

If this opportunity sounds like something you would like to be a part of, send your CV and cover letter to *******@blackcatcivil.com.au or click apply.