Field Service Plant Mechanic

Posted Date: 18 Dec 2025

Location:Sydney, NSW, AU

At WesTrac, we're made for more of what matters most. More family time, with paid parental leave, flexible working arrangements and purchased leave programs to give you the work life balance you've always wanted. More development opportunities, with WesTrac's own in house RTO , access to your own guided learning platform and a range of pathways to help you steer your career in the direction of your dreams. More diversity, with over 4,000 team members with a tonne of differences, united by our passion for building a better tomorrow. As an industry leader and employer of choice, we're Made for More.

Join WesTrac as a Field Service Plant Mechanic – Marine & Industrial Specialist

Are you passionate about CAT machinery and looking to take your career into a more specialised and high‑impact field? WesTrac is seeking an experienced Field Service Plant Mechanic to join our Casula team, focusing on marine and industrial power systems.

In this unique role, you'll work on a diverse range of equipment - from marine engines powering commercial vessels to critical generators supporting hospitals, data centres, and major retail operations. Your expertise will help keep essential services running and ensure our customers have reliable power when they need it most.

Reporting to the Field Service Supervisor, you will take ownership of onsite repairs, diagnostics and maintenance across a broad customer base, delivering high‑quality service with the autonomy and technical challenge field service offers.

Roster Options

• Day shift only – Monday to Friday, 10.5 hour days.
• Phone, laptop and tool of trade vehicle supplied

• Annual earnings $135,000 to $170,000*

• Above rates are a guide; each candidate will be assessed on skill and experience

Skills & Experience

• Strong technical and diagnostic skills with an Australian Recognised Mechanical Trade (Heavy Diesel or Mobile Plant)
• A genuine passion for CAT equipment and delivering high-quality service.
• Ability to work independently in the field while maintaining safety and compliance.
• Excellent attitude to your work, and dedication to safe work practices
• Ability to work autonomously in the field and in a team
• Current Drivers Licence
• Applicants with site bans are ineligible for Field Service Positions

Why WesTrac?

• Job security and serious potential for career advancement
• Competitive remuneration
• Fitness Passport for the whole family
• Discounted CAT Hand Tools
• Generous relocation assistance for eligible candidates
• Income protection with 24/7 coverage
• 12 weeks paid parental leave (primary carer)
• Access to free Caterpillar online machine specific training
• Access to hands‑on technical training through the WesTrac Institute (RTO 50737)
• program – work alongside your mates and receive up to $3000
• Novated leasing options
• Uniforms and PPE provided + laundered on site
• Employee Wellness Program & discounted private health insurance
• Start your career right with us- site specific training provided at our state-of-the-art WesTrac Institute

If you believe you have the skills and experience to succeed in this role, please submit your cover letter and resume for consideration via the link. For further information regarding this role, please contact our Recruitment Team on and quote job number # 5063.

Successful applicants will be required to complete a satisfactory National Criminal History Check as part of the recruitment process.

Please note: The Talent Acquisition Team will be on annual leave from Friday 19th December 2025, returning Monday 12th January 2026. During this time, recruitment activities will be paused, and applications will not be reviewed. Any applications submitted during this period will be assessed once the team returns in January.