About Us
WA Limestone is a leading, privately owned quarrying and contracting company in Western Australia, with over 50 years of successful operation.
As one of Perth's top suppliers of raw construction materials, we have established ourselves as an industry leader in supplying of limestone products, as well as in quarrying, mining, marine construction, and the manufacturing and delivery of premix concrete.
Our team of over 350 dedicated employees and contractors works across metro Perth and regional WA to deliver high-quality solutions to the construction, mining, and civil sectors.
The WA Limestone Group comprises WA Limestone, WA Bluemetal, WA Premix, and the Limestone Building Block Company.
We pride ourselves on safety, sustainability, and maintaining strong client relationships.
With a family-oriented approach, an approachable management team, a agile workforce, and a strong company culture, we offer the job security of a large company while ensuring every employee feels valued.
The Opportunity
Looking for a secure, long-term workshop role where your skills are genuinely valued?
If you're an experienced Heavy Diesel Mechanic or Components Fitter who takes pride in precision rebuilds and enjoys working on CAT machinery, this is a role where you can build a long-term future.
About the role
Based in our well-equipped Perth metro workshop, this position focuses on the overhaul, rebuild, inspection, and testing of heavy diesel components across our large mobile plant fleet.
You'll work on a variety of major components including:
CAT engines
Transmissions
Torque converters
Differentials & final drives
Hydraulic systems and components




This is a hands-on role suited to someone who enjoys technical workshop work, fault finding, and delivering high-quality rebuilds to OEM standards.
Key Responsibilities and Duties, including but not limited to the following:
Strip, inspect, assess, and rebuild heavy diesel components
Diagnose faults, wear patterns, and component failures
Perform precision rebuilds to OEM specifications
Interpret technical manuals, schematics, and parts documentation
Complete testing and quality checks on rebuilt components
Maintain accurate service records and job documentation
Contribute to a safe, clean, and productive workshop environment
Work alongside a skilled and supportive maintenance team
To be successful in this role, you will have:
Trade qualification as a Heavy Diesel Mechanic (Australian recognised) —Essential
Current valid WA manual driver's licence —Essential
Strong CAT component rebuild experience —Essential
Workshop-based experience with heavy mobile plant components
Experience with Komatsu equipment will also be highly regarded.
Excellent mechanical knowledge and diagnostic ability
High attention to detail and pride in workmanship
Strong commitment to safety and teamwork
Ready for Your Next Opportunity?
If you're a skilled Heavy Diesel Mechanic or Components Fitter looking for a secure Perth-based role with a reputable WA company, we'd love to hear from you.
Apply via Seek using the "Quick Apply" button or email your resume to: employment@ walimestone.com
Successful applicants will be required to complete a pre-employment medical and Drug & Alcohol screening prior to commencement.
No recruitment agencies please.

📌 Heavy Diesel Mechanic / Components Fitter (Western Australia)
🏢 WA Limestone
📍 Western Australia