Job Description
Process Design Engineer (Water & Wastewater)
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Innova Water Pty Ltd – Ascot, Brisbane QLD
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$115,000 – $140,000 + Super
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About the Role
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Innova Water is seeking a mid-level Process Design Engineer to join our Brisbane team.
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This role is ideal for an engineer with 4–6 years' experience who can take ownership of design packages, work directly with clients, and contribute across design, construction and commissioning.
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You will:
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Work independently on smaller projects
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Support a Senior Engineer on larger, complex designs
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Take ownership of technical design, coordination and client interaction
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This role is suited to a practical engineer who enjoys seeing designs built and commissioned — not just developed on paper.
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This is not a purely desktop design role — you will be involved in site work, commissioning and real-world project delivery.
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Key Responsibilities
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Process Design
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Develop and review:n
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Process Flow Diagrams (PFDs)
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Piping & Instrumentation Diagrams (P&IDs;)
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Mass balances
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Complete process design calculations across water and wastewater treatment units
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Perform:n
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Equipment sizing and selection (pumps, blowers, valves and process equipment)
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Hydraulic assessments and system design
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Prepare and review:n
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Basis of Design reports
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Detailed design reports
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Develop:n
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Functional descriptions
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Process control philosophies
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Design Coordination & Project Delivery
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Coordinate with civil, structural, mechanical, electrical and controls disciplines
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Review drawings, specifications and design deliverables
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Manage RFIs, technical queries and design actions
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Prepare:n
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Technical specifications
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Scopes of work
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Review:n
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Vendor submissions and equipment selections
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Participate in client meetings and design reviews
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Provide guidance to junior
engineers/designers
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Risk & Technical Reviews
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Participate in structured risk processes including:n
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HAZOP
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CHAIR workshops (1/2/3)
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CHAZOP
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Construction, Commissioning & Handover
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Prepare:n
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Commissioning Plans
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Proof of Performance (PoP) plans
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Provide in office commissioning support, testing and fault finding
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Conduct site inspections and support construction activities
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Prepare:n
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O&M; manuals
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SOPs
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Operator training materials
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Support contractors and clients through construction and startup
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About You
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Australian Permanent Residency or Citizenship is required for this position.
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Essential
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Degree in Chemical Engineering (Civil or Environmental considered with strong process focus)
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4–6 years' experience in water, wastewater or a closely related process industry (minimum 3 years required)
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Demonstrated ability to:n
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Develop PFDs, P&IDs; and process calculations independently
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Contribute to and review technical design documentation
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Experience writing:n
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Functional descriptions and/or control philosophies
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Strong communication skills and ability to be client-facing
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Willingness to be involved in site work, commissioning and construction support
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Demonstrated interest in building a career in water and wastewater infrastructure
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Highly Regarded
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Experience with:n
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Treatment plants, pump stations, pipelines or recycled water systems
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Exposure to:n
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Design coordination across disciplines
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Managing junior
engineers/designers
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Experience from:n
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Engineering consultancies or
construction/project
delivery roles
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Experience with:n
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AutoCAD (essential)




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Basic AutoCAD drafting proficiency is required for this role.
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Other process modelling or design software
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Not a Perfect Fit? Still Apply
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We recognise strong engineers don't always come from identical backgrounds.
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We will consider:
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Engineers from construction or contractor environments with strong delivery and client-facing experience
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Candidates with minor gaps in specific design areas who demonstrate high capability, ownership and practical project experience
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About Innova Water
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Innova Water is a specialist process and hydraulic design consultancy focused exclusively on water and wastewater infrastructure.
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Based in Brisbane (Ascot), delivering projects across Australia's east coast
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Working on treatment plants, pump stations, pipelines and recycled water infrastructure
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A young, high-performance consultancy (small team, high accountability)
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Focused on delivering practical, construction-ready designs and supporting projects through commissioning and handover
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Why Join Innova Water?
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Direct mentoring from an industry-leading process engineer
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Accelerated technical development compared with large consultancies
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Early exposure to:n
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Client interaction
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Real design decisions
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Site and commissioning work
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Small, high-trust team where your contribution matters
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Opportunity to grow with the business
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You will see your designs through to construction, commissioning and operation — and be directly involved when things don't work as expected.
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Working arrangements
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Based in Ascot (Brisbane inner north)
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Predominantly office-based
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Up to 1 day per week work-from-home
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Short periods of site work throughout the year
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Salary & Incentives
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$115,000 – $140,000 + super (depending on experience and capability)
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Additional incentives or bonus structures may be considered for the right candidate
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📌 Process Design Engineer (Water & Wastewater) (Queensland)
🏢 Innova Water
📍 Queensland