Poly Welders & Trade Assistants
Fourtrex Engineering
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Consistent Pipeline of Regional WA Projects
Supportive Team & Hands-On Leadership
Career Growth & Training Opportunities
Consistent Pipeline of Regional WA Projects
Supportive Team & Hands-On Leadership
Career Growth & Training Opportunities
Join a Growing WA-Based Engineering Company
Fourtrex Engineering is a dynamic piping and civil engineering company delivering customised solutions across Australia. We specialise in turnkey packages that help clients manage costs, minimise downtime, and maximise project value.
With proven capabilities across mining and civil projects — from mine water management to complex pipeline installations — we’re expanding rapidly and looking for skilled team members to join us.
We currently have multiple positions available for:
Poly Welders (HDPE)
Plumbers with poly experience
Trade Assistants to support welding operations
Key Responsibilities
Welding HDPE using McElroy and Dixon welders
Connecting new pipelines to existing water infrastructure
Hydrostatic testing and commissioning
Assisting ground crews, including loading pipe and site prep
Required Skills & Tickets
Experience operating Excavators, IT Loaders, and Skid Steers
Ability to read and interpret civil and HDPE pipeline drawings.
Experience in mining or remote site work (FIFO/DIDO) is highly regarded.
Proficiency with McElroy & Dixon welders
Valid Poly Welding Certificate (Butt Weld & Electrofusion or Extrusion) from an accredited institution within the last 2 years
Chainsaw Certification
HR Driver’s Licence (desirable)
High Risk Work Licences – Dogging (DG), Forklift (LF), and Crane (CN)
White Card
Working at Heights ticket
Experience with bores and pumps (desirable)
Familiarity with QA/QC procedures for welds
Basic mechanical aptitude for pump and valve installations.
Why Join Fourtrex?
High-growth company with consistent project pipeline
Regional WA focus with strong industry reputation
Supportive team culture and hands-on leadership
Opportunities for career development and training
Other Considerations
Ability to pass pre-employment medical and drug/alcohol screening
Full working rights in Australia
Willingness to travel or work on FIFO/DIDO rosters — even if your projects are regional, this helps set expectations
National Police Clearance (within 12 months)