Job Description
T-Rex Manufacturing is a well-established and growing business that designs and manufactures fluid handling and dust suppression equipment (water cannons, pumps, hose reels, spray systems and associated control hardware) for mining, construction and agriculture.
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Product Development Engineer (Mechanical)
n T-Rex Manufacturing | Sunshine West, VIC | Full time, permanent
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Do you want to see your designs go from a SolidWorks model to a prototype, through testing and onto the factory floor, and own every step along the way?
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T-Rex Manufacturing is looking for an experienced Product Development Engineer to lead the development of our new products and look after our existing range. It's a hands-on, on-site role at our Sunshine West factory.
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About the role
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You'll report to the General Manager and work across the whole product lifecycle:
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Run several product projects at once, from market research, benchmarking and feasibility through to release
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Help the Managing Director set and maintain the product development roadmap
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Design new products and variants in SolidWorks using sound DFMA practice for CNC machining, fabrication, welding and casting
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Build and iterate prototypes using in-house 3D printing and contractor-made parts
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Write test plans, then run flow, pressure, durability and field trials
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Produce complete AS **** manufacturing drawings with correct tolerancing and GD&T;
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Source and select suppliers for new components: issue RFQs, assess capability and inspect samples
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Product lifecycle and quality
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Develop inspection and QC procedures, and resolve non-conforming parts with suppliers
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Make sure products meet the relevant Australian and international standards
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Create customer technical material: datasheets, GA drawings, exploded views,



performance data and manuals
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Investigate field failures and warranty claims
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Solve production and supplier issues
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Improve assembly methods, jigs and fixtures, and drive continuous improvement
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Train production staff on products, drawings and assembly procedures
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About you
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Bachelor's degree in Mechanical, Mechatronics or Manufacturing Engineering (or equivalent)
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5+ years in mechanical product development, ideally with fluid handling, industrial or mobile equipment
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A proven record of taking products from concept through to production
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Advanced SolidWorks skills (parts, assemblies, configurations and drawings)
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Strong 2D drafting and GD&T; that external machinists and fabricators can build from
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Working knowledge of CNC machining (lathe, 3-axis and 5-axis), fabrication, welding and casting
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Explicit technical writing for instructions, test reports and customer documents
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Comfortable using AI tools in your engineering workflow
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Happy to get hands-on with prototyping, testing and working alongside assemblers
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Hydraulic and pneumatic systems
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DC circuits and embedded systems
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ERP systems (BOMs, routings, engineering change)
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3D printing and rapid prototyping
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CSWP certification or higher
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Lean manufacturing, continuous improvement and DFMA
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You'll be innovative and commercially minded, with a sharp eye for detail. You communicate easily with people on the factory floor and in the boardroom alike, and you take ownership of projects through to completion.
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Real ownership: your designs go into production and you see them through
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A broad role covering design, prototyping, testing, quality and production
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Direct input into the product roadmap
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Applicants must have full working rights in Australia.
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📌 Product Development Engineer (Mechanical) (Melbourne)
🏢 T-Rex Water Trucks
📍 Melbourne