Key selling points

- Draft real treatment plants, from P&ID; through fabrication and site

- Work alongside experienced design, process and electrical engineers

- Equal share of company profits for every permanent employee

Short description

Drafting role with an Adelaide specialist in the design, construction and operation of water and wastewater treatment infrastructure.

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Drawings that get built, commissioned and operated by the same team. Flow designs, builds and operates water and wastewater treatment plants, so your drawings go straight to fabrication and site, and you see them through to long term operation. We are a small, senior team and we value proven experience over formal qualifications.

About Flow

Flow Infrastructure is a specialist design and construct firm delivering water and wastewater treatment infrastructure, including water and sewage treatment plants, pump stations, recycled water schemes and industrial wastewater systems. Our sister company, Flow Utilities, operates and maintains the assets we deliver. Our clients include developers, councils, government and industry across South Australia and interstate.

Flow was established in 2026 by a team that has worked together for more than 20 years. Collectively we bring more than 80 years of experience and, in previous roles, our team delivered 37 sewage treatment plants, with project experience across Australia and New Zealand. Flow is certified to ISO 9001 and ISO 45001 and holds a building work contractors licence specific to sewer and water infrastructure installation.

Current projects include industrial and winery wastewater treatment, private water and sewerage schemes for greenfield communities, and municipal treatment plant upgrades, delivered for developers, industry, councils and government.

The role

You will prepare design and construction documentation across our water and wastewater projects, working jointly with our Design Lead on mechanical, piping and plant layout drafting and with our Electrical and Automation Lead on electrical and control documentation.

You will be involved from tender through detailed design, construction and as constructed records,



working closely with our process and design engineers so that every drawing set is accurate, coordinated and buildable. You will:

- Prepare 2D drawings and 3D models for sewage and water treatment plants, pump stations, recycled water schemes and industrial wastewater systems.

- Produce general arrangements, plant layouts, piping arrangements and isometrics using AutoCAD and Plant 3D.

- Prepare tank, skid and fabrication drawings, along with valve, pump and instrument schedules.

- Prepare site layouts, pipeline and rising main alignments, long sections and services coordination drawings using Civil 3D.

- Draft P&IDs; and process flow diagrams with our process engineers.

- Prepare electrical and control documentation, including single line diagrams, schematics, switchboard layouts and cable routes, under the direction of the Electrical and Automation Lead.

- Coordinate drawing inputs from suppliers, subcontractors and our civil and structural design partner.

- Prepare drawing sets for tenders, regulatory submissions, construction and as constructed records.

- Manage drawing registers and revision control, and help develop the CAD templates, blocks and standards for the business.

- Attend site during construction and commissioning as required, including measurement and as constructed checks.

About you

- Proven experience as a mechanical or process plant drafter. A Diploma or Advanced Diploma of Engineering (Drafting) is valued, but your portfolio matters more than your qualifications.

- At least 5 years of drafting experience in the water sector or comparable process plant work, ideally on water and wastewater treatment plants, pump stations or pipeline infrastructure. Applicants whose background is in residential,



commercial building or architectural drafting are not suited to this position and will not be considered.

- Proficiency in AutoCAD, Civil 3D and Plant 3D is essential. Experience in Inventor or SolidWorks is an advantage.

- Construction experience is beneficial but not essential. It helps to understand how drawings turn into steel, pipe and concrete.

- Experience preparing P&IDs;, piping arrangements and plant layouts, with a working knowledge of valves, pumps, pipework, instruments, tanks and dosing systems. Electrical and control drafting experience is highly regarded.

- Careful and organised, with good drawing control habits and a sound understanding of drafting standards.

- The ability to manage several projects at once.

- Clear communication skills, with the confidence to work with engineers, suppliers and site teams.

- Willing to undertake site visits within South Australia and occasional interstate travel as required.

What we offer

- A salary of $100k to $125k plus super, depending on experience.

- An equal share of company profits alongside every other permanent employee.

- Broad exposure across municipal and industrial water and wastewater projects, from design through construction and operation, with process, mechanical, electrical and automation design all delivered in house.

- Varied, hands on project work, and the opportunity to shape the drafting standards and templates of a growing business.

- A collaborative, experienced team where you work closely with the business owners and have a direct say in decisions.

- A up-to-date office on Grote Street in the Adelaide CBD.

How to apply

Please include your CV, a cover letter and a selection of sample drawings or models with your application, with any confidential client information removed. Make sure your application accurately reflects your own experience and qualifications. Shortlisted candidates will be asked to talk through their work at interview and may be asked to complete a short practical drafting exercise. Applications that are clearly AI generated or overstate experience will not be progressed.

You must have current Australian working rights.

📌 Drafter, Water & Wastewater Infrastructure (Adelaide)
🏢 Flow Infrastructure
📍 Adelaide