Technical Executive, Water Treatment, Process Engineering

Purpose-led work. Real impact. Future-ready careers.

At WSP, we’re committed to shaping communities and delivering solutions that genuinely make a difference. If you’re considering your next career move, choose a place where you can belong, grow, and thrive.

Explore what’s ahead for our Water Infrastructure Group and be part of the future we’re building.

Technical Executive, Water Treatment

Big things are happening in water — and we want you to be part of it.

With major treatment projects underway and new opportunities emerging across Australia, we’re looking for a Principal Process Engineer or a Technical Executive ready to make an impact and help write the next chapter of our water story.

You’ll join a high‑performing national team and lead process engineering across Water Treatment Plants (WTPs) and Wastewater Treatment Plants (WWTPs) on some of Australia’s most meaningful and complex infrastructure programs.

What You’ll Do

• Deliver water and wastewater treatment projects as part of a national multidisciplinary team across QLD, NSW, VIC, TAS, WA and SA.
• Lead process engineering design for WTPs and WWTPs, including mass balance, design basis, equipment sizing, PFDs, P&IDs and functional descriptions.
• Provide technical leadership in treatment process engineering, odour treatment, ventilation design, modelling and optimisation.
• Drive high‑quality design, technical review, sign‑off, and risk management across projects of varying scale.
• Apply treatment process modelling (e.g., BioWin) and analytical methods to inform design decisions.
• Collaborate with clients, operators and vendors to develop innovative, future‑ready solutions.
• Prepare and review detailed technical reports, proposals and bid inputs.
• Mentor graduate and developing engineers; contribute to capability uplift across the Water team.
• Support commissioning activities and troubleshoot process performance.
• Stay current with emerging water and wastewater technologies and drive innovation in design.
• Represent WSP through industry bodies, committees, technical papers and events.
• Ensure compliance with relevant state and federal legislation, regulatory requirements and industry standards.

About You

This role is strategically important to our growth and impact. You’re a team player with strong technical depth and a consultative approach — someone who can influence senior stakeholders and lead complex engineering workstreams.

You will bring:

• Bachelor’s Degree in Chemical Engineering (or equivalent); MIEAust/IChemE, CPEng and RPEQ
• Significant experience in the Australian water industry, preferably with utilities or major consulting projects.
• Proven technical capability across water and/or wastewater process engineering.
• Strong experience in WTP/WWTP process design, including treatment trains, process optimisation and modelling.
• Experience with odour treatment systems, ventilation design, or desalination (desirable).
• Ability to break down complex technical problems and articulate clear strategic pathways forward.
• Demonstrated ability to innovate and challenge the status quo.
• Strong understanding of environmental, sustainability and social considerations in treatment design.
• Experience in CHAIR, HAZOP, Safety‑in‑Design.
• Ability to provide technical review, verification and sign‑off for medium to large projects.
• Commissioning experience (advantageous).
• Ability to identify key risks early and guide project teams towards mitigation strategies.

Why Choose WSP?

At WSP, you’ll build a career with purpose, flexibility and opportunity. Enjoy competitive pay, an inclusive culture where your ideas matter, and career pathways shaped around your goals.

You’ll have flexible work options, up to 16 weeks paid parental leave, extra purchased leave, and the chance to work on purpose‑driven projects that strengthen communities.

With global mobility and our Employee Share Purchase Plan, you’ll be part of a company committed to your growth and your future. To find out more about our commitment to the health and wellbeing of our people, and the programs we’ve designed to help you thrive, go to our Employee Benefits page.

Make a real difference—on your terms, with your vision, and alongside a team that shares your ambition.

Because with us, you can. Apply today.

🔎 Questions? Let’s talk.

For a confidential chat about these roles—or other opportunities in our Water Group—reach out to Carmina Navalta from our Talent Acquisition Team.