The Vacancy

Senior Mechanical Engineer - Water and wastewater infrastructure

Location - Perth or Brisbane

Lead mechanical engineering packages for water and wastewater treatment plants, pump stations and associated infrastructure. Combine hands-on design with technical leadership, client engagement and commercial control to deliver coordinated designs that can be constructed, operated and maintained safely.

Working with Binnies Australia

We deliver water engineering consultancy for utilities, government and industrial clients, including treatment upgrades, conveyance and mine water projects. You will work with multidisciplinary teams and draw on Binnies and RSK specialists, including colleagues in other offices, to support studies, design and construction delivery.

The role supports direct client commissions and contractor-led design and construct projects. Work includes coordination with suppliers, operators and delivery partners, with site visits and travel as required by the assignment.

Role Responsibilities -

- Define the mechanical scope, design basis, deliverables, interfaces, resources and budget for assigned packages. Plan reviews and manage delivery against programme and fee.
- Lead equipment selection and mechanical design for pumping, treatment, chemical dosing, aeration, sludge handling and pipework systems within your area of competence.
- Prepare and review pump duty and system calculations, equipment specifications, valve schedules, layouts and pipework designs; coordinate surge, stress or other specialist analyses where required.
- Direct designers and engineers, allocate work to suit competence, check technical outputs and resolve interfaces with process, civil, structural, electrical and automation teams.
- Plan brownfield tie-ins and staged upgrades with operators and contractors, addressing isolation, maintainability, lifting, equipment removal and continuity of service.
- Lead mechanical input to safety in design, constructability and operability reviews; contribute to HAZOP and ensure assigned risks and actions are resolved or clearly handed over.
- Manage technical interfaces with suppliers and contractors, evaluate bids and vendor submissions, and resolve construction queries within the agreed scope and authority.
- Support factory and site testing, installation inspections, commissioning and defect resolution. Maintain traceable decisions and clear acceptance recommendations.




- Prepare proposal scopes and fee estimates, build client relationships, report forecasts and changes early, and mentor engineers through constructive review and practical guidance.

Essential Qualifications And Experience -

- Degree in Mechanical Engineering or an equivalent relevant engineering qualification.
- Substantial water or wastewater mechanical design experience is mandatory. Typically eight or more years of relevant engineering experience, with demonstrated leadership of design packages.
- Proven delivery of treatment plant or pump station designs, including equipment selection, pipework, vendor interfaces and multidisciplinary coordination.
- Ability to undertake and critically review engineering calculations and documentation, manage technical risk and recognise when specialist input is required.
- Experience managing package scope, budgets, programme and technical reviews; ability to communicate decisions clearly to clients, operators and contractors.
- Working knowledge of relevant Australian standards and water authority requirements, together with practical construction, operation and maintenance considerations.

Desirable Experience -

- CPEng and RPEQ, or eligibility with a transparent pathway to registration; experience supervising and developing junior engineers.

- Queensland or WA water utility delivery, including applicable Water Corporation or Queensland asset-owner standards and assurance processes.
- Design and construct projects, brownfield staging, factory or site acceptance testing, commissioning, or specialist treatment equipment and associated mechanical systems.

We Offer Excellent Benefits Including -

- Competitive salary
- Attractive parental leave policy
- Employee Assistance Program, including for your family
- Diverse working environment
- Wide network of resources through sister companies worldwide as part of RSK Group

To express your interest in joining a growing and exciting business in the Australian water industry, please apply now!





#Engineering #Water

About Us

We develop intelligent solutions using our award-winning integrated planning and design approach to deliver functional infrastructure and lasting environmental and social legacies. This is backed by a culture that has stayed true since our foundation over 100 years ago. We create new possibilities for humanity through our innovative approach to delivery.

Together with our clients, we are always striving to find a smarter way to deliver projects. From providing low carbon, sustainable and resilient water solutions, flood alleviation and environment services, to connecting people with insights and data. Our business exists to improve the quality of life for our local communities today and for generations to come.

Binnies is part of the RSK Group, a leading integrated environmental, engineering, and technical services business providing dynamic, multidisciplinary services to a wide range of sectors. RSK was founded in 1989 and has grown considerably since then.

At RSK, we operate as a group of businesses that work together seamlessly, aiming for growth through diversification. Our strategy helps us build a strong and resilient business, capable of weathering external challenges, while also providing greater value to our clients and more opportunities for our employees.

Since the beginning, our philosophy has remained the same: employ, develop and reward talented individuals. People are crucial to our company, and we recognise that our success hinges on our colleagues' growth. We're committed to preserving RSK's people-first culture, promoting innovation, and fostering a supportive and caring environment for collaboration.

At RSK, we want you to be part of our successes and help you reach your career aspirations. We take pride in offering employees fulfilling and challenging careers by promoting ongoing growth and empowering individuals to excel.

We are committed to fostering an inclusive workplace that welcomes individuals from all backgrounds, experiences, and perspectives. We firmly believe that embracing and celebrating the diversity in our workforce makes us a stronger and more innovative company.

If you're passionate about making a difference, join us as we work together to build a brighter, more equitable, and sustainable future for all. Do you have what it takes?

📌 Senior Mechanical Engineer (Perth)
🏢 Binnies Australia
📍 Perth