Senior Mechanical Engineer – RPEQ | Contract / Part-Time
Approx. 2 Days per Week + Project-Based Support | Hemmant, Brisbane
Are you an experienced
RPEQ Mechanical Engineer
looking for a flexible role where your technical expertise and leadership can make a genuine impact?
Industrial Plastics is seeking a highly experienced
Senior Mechanical Engineer with current RPEQ registration
to join our team on a versatile contract basis.
This is an opportunity for an accomplished engineer to take a senior technical and mentoring role across complex industrial projects – providing engineering oversight, guiding a growing team of junior engineers, and helping deliver practical engineered solutions for clients across
water and wastewater treatment, chemical processing, mining and heavy industry
.
The role is expected to be approximately
two days per week
, with flexibility for additional involvement on major or specialist projects as required.
The Role
You'll act as a senior technical authority within our engineering team, combining
hands‐on mechanical engineering expertise, project oversight and people leadership
.
You'll be responsible for:
Providing senior mechanical engineering oversight and technical direction across projects
Reviewing engineering designs, calculations, drawings, specifications and technical documentation
Providing
RPEQ review, verification and sign-off
where required and within your area of competency
Leading technical and design reviews for complex industrial projects
Mentoring, guiding and developing our junior engineers
Helping coordinate engineering priorities and providing clear technical direction across multiple projects
Supporting engineers through complex design challenges and helping strengthen their technical judgment




Working closely with production and fabrication teams to ensure designs are practical, manufacturable and fit for purpose
Providing technical input throughout the project lifecycle, from concept and design through to manufacture, installation and delivery
Engaging confidently with customers, consultants, contractors and other project stakeholders
Helping strengthen engineering standards, documentation, systems and processes across the business
About You
Current RPEQ registration in Mechanical Engineering is mandatory for this position.
We're looking for someone who brings both
technical depth and strong leadership capability
.
Ideally, you will have:
Current RPEQ registration – Mechanical Engineering – essential
Significant professional mechanical engineering experience
Strong experience in
water or wastewater treatment, chemical processing, mining, process plant, industrial infrastructure or similar heavy industry environments
Experience with mechanical equipment, tanks, piping, process systems, fabricated structures or related industrial projects
Strong engineering design, analysis, review and problem-solving capabilities
Demonstrated experience leading, mentoring or supervising engineers
The ability to confidently review the work of junior engineers and provide constructive technical direction
Strong project and stakeholder management skills
Excellent communication and interpersonal skills




The ability to communicate effectively across all levels – from junior engineers and workshop teams to customers, consultants and senior management
A practical, commercially aware engineering mindset
Experience with
thermoplastics, HDPE, PP, PVC, engineered tanks, piping or fabricated process equipment
would be highly regarded but is not essential.
Above all, we're looking for someone who can bring
experience, sound engineering judgement and leadership
to the team.
Why Industrial Plastics?
Industrial Plastics is a Brisbane‐based engineering and manufacturing business delivering custom‐engineered thermoplastic solutions for demanding industrial applications.
Our work spans
mining, water and wastewater treatment, chemical processing, infrastructure and heavy industry
, with projects ranging from engineered tanks and process equipment to complex custom‐fabricated systems.
Unlike a traditional consultancy environment, our engineering and manufacturing teams work side‐by‐side. You'll have the opportunity to see projects move from concept and design through to fabrication on our workshop floor and final delivery.
This role offers:
Flexible contract arrangement – approximately 2 days per week
Additional project‐based involvement when required
Challenging and technically varied industrial projects
The opportunity to act as a senior technical authority within a growing engineering team
A meaningful role mentoring and developing junior engineers
Direct involvement in engineering decisions and project outcomes
Close collaboration with manufacturing, project and leadership teams
The opportunity to shape and strengthen our engineering capability as the business grows
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📌 Senior Mechanical Engineer – Rpeq | Contract / Part-Time (Queensland)
🏢 Industrial Plastics
📍 Queensland