Senior Process Engineer (Resource Recovery)

Company

W3 Associates are partnering with a specialist environmental and resource recovery business delivering advanced solutions across soil remediation, materials recycling, and water treatment.

The business operates at the forefront of the circular economy, transforming construction and contaminated waste streams into high-value reusable materials including recycled sand, aggregates, and engineered soils.

Through large-scale soil washing and integrated water treatment systems, they are challenging traditional landfill-driven approaches and creating sustainable alternatives for the infrastructure and construction sectors.


Position

An opportunity exists for a Senior Process & Commissioning Engineer to join a growing team in Sydney.

This is a senior, hands-on role focused on the design, optimisation, and commissioning of soil washing, recycling, and water treatment plants.

You will be involved across the full project lifecycle—from process design through to on-site commissioning—supporting the delivery of high-performance systems that convert contaminated materials into reusable products.

The role is Sydney-based, offering a flexible working model (typically 3 days in the office), with travel required to project sites as needed.


Key Responsibilities

• Lead process design across soil washing plants, recycling systems, and water treatment facilities
• Design and optimise separation processes including hydrocyclones, screening, classification, and materials handling systems
• Develop and refine water treatment processes including settlement, thickening, pH adjustment, and water reuse within wash plants
• Drive water quality improvements to enhance recovery rates and increase value of recycled sand and aggregates
• Support treatment strategies for complex contaminants including hydrocarbons, heavy metals, and PFAS
• Lead and support on-site commissioning activities, ensuring plant performance aligns with design intent
• Work closely with Process Engineers to define dosing strategies and optimise system performance

About You

• Proven experience in process design within water, wastewater, or materials processing environments
• Strong commissioning experience across industrial plants (e.g. wash plants, WTP/WWTP, mining or recycling facilities)
• Experience with separation technologies such as hydrocyclones, screening, and dewatering systems
• Solid understanding of water treatment processes including clarification, thickening, and chemical dosing
• Exposure to contaminated water or soil treatment (e.g. hydrocarbons, metals, PFAS) advantageous
• Strong communication skills and ability to work across multidisciplinary teams

Benefits

• Flexible working (typically 3 days office-based)
• Opportunity to work on innovative, sustainability-driven projects
• Exposure across both design and commissioning phases
• Strong project pipeline within a growing and evolving sector

How to Apply

To apply, please follow the link below or contact Chris Hinton or Bradley Hardy for a confidential discussion.

W3 Associates is a specialist recruitment firm focused on the Australian water sector. We partner with water technology companies, engineering consultants, civil contractors, and utilities to connect high-quality professionals with career opportunities across the industry.