Senior Mechanical Engineer - Water and wastewater infrastructure

Location - Brisbane or Perth

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 explicit 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

📌 Senior Mechanical Engineer (Brisbane)
🏢 Binnies
📍 Brisbane