Site Engineer, Commissioning

Acciona; Wanneroo; On-site; AUD 110,000 - 150,000; Full time

Job summary

ACCIONA is seeking a Commissioning Site Engineer (Process) to join the commissioning team for the Alkimos Seawater Desalination Plant in Perth. You will support commissioning, start-up, testing and handover of desalination systems, working with multi-disciplinary teams to meet design, safety and performance requirements.

The role offers on‑site, long‑term engagement on a landmark WA water infrastructure project with potential for career growth as works progress toward 2028 commissioning and

Qualifications

• Bachelor’s degree in Engineering in relevant field is required.
• Experience commissioning or operating water treatment or desalination plants.
• Ability to read PFDs, P&IDs and control philosophies; familiarity with SCADA/DCS.

Responsibilities

• Develop working knowledge of assigned process systems and control logic.
• Support safe execution of commissioning activities to specification and procedure.
• Collaborate with operators and M/E&I teams to ensure readiness.
• Conduct system walkdowns, punch listings and completion verification.
• Assist with loop checks and cause‑and‑effect testing.
• Contribute to handover of systems to operations.
• Apply HSSE standards including PTW and risk assessments.

Skills

Commissioning experience

PFDs & P&IDs reading

SCADA/DCS knowledge

Site-based

Safety-first attitude

Team collaboration

Education

Bachelor’s degree in Engineering (Chemical, Process, or Instrumentation & Control)

Tools

SCADA

Job description

ACCIONA is a global company, leading in the development of regenerative infrastructure that creates a positive impact on society. Our workforce consists of more than 65,000 professionals, present in more than 40 countries across the five continents, all contributing in our mission to design a better planet. Are you a passionate individual who wants to make a difference, promote sustainable development, and find solutions to the biggest global challenges including climate change, overpopulation, and water scarcity? Come and join us in building the infrastructure our planet needs to achieve a sustainable future.

Job Description

ACCIONA is a global company, leading in the development of regenerative infrastructure that creates a positive impact on society. Our workforce consists of more than 65,000 professionals, present in more than 40 countries across the five continents, all contributing in our mission to design a better planet. Are you a passionate individual who wants to make a difference, promote sustainable development, and find solutions to the biggest global challenges including climate change, overpopulation, and water scarcity? Come and join us in building the infrastructure our planet needs to achieve a sustainable future.

Job Description

Join ACCIONA on a flagship WA infrastructure project, with first production set for 2028. Long term work, strong job security and real career runway as more works get awarded.

The Project

ACCIONA is leading the Alkimos Seawater Desalination Plant in Perth, a $2.8 billion project delivered in alliance with Water Corporation and Jacobs. Stage 1 will produce 150 million litres of drinking water a day for Western Australians. The plant integrates seawater desalination with on-site groundwater treatment, a first for a plant of this scale in WA. Construction is underway, with commissioning targeted for 2028.

The Role

We’re looking for a Commissioning Site Engineer (Process) to join the commissioning team, reporting to the Manager, Commissioning. You’ll support the commissioning, start-up, performance testing and initial operation of the plant’s desalination process systems, making sure equipment and plant operations meet design, safety and performance requirements. The role spans control room monitoring and field-based troubleshooting, working with mechanical, electrical, instrumentation and operations teams to support a safe, efficient start-up and the successful handover of systems to operations.

It suits an engineer looking to build technical, operational and leadership capability on a large-scale water infrastructure project, with exposure to commissioning at a scale few projects in Australia can offer.

Key Responsibilities

• Develop working knowledge of assigned process systems and control logic
• Support safe execution of commissioning activities to specification and procedure
• Collaborate with operators and the mechanical, electrical and instrumentation teams
• Conduct system walkdowns, punch listing and completion verification
• Support loop checks, sequence testing and cause-and-effect matrix testing
• Assist with system testing, troubleshooting, performance validation and operational readiness activities
• Review and analyse process trends and data to inform commissioning decisionsli>
• Apply HSSE systems including PTW, LOTO and risk assessments
• Support compliance with safety, environmental and quality standards
• Contribute to the handover of systems to operations

Required Skills and Competencies

Required Skills and Competencies

• Bachelor’s degree in Engineering (Chemical, Process, or Instrumentation & Control)
• Experience commissioning or operating water treatment or desalination plants
• Ability to read and interpret PFDs, P&IDs and control philosophies
• Working knowledge of SCADA or DCS control systems
• A genuine safety-first attitude
• Willingness to be fully site-based for the commissioning phase

What We Offer

At ACCIONA, we offer a dynamic and challenging work environment where our employees can grow and develop their careers. We provide opportunities for professional development, and our team members are encouraged to bring new ideas and approaches to their work. Our company is dedicated to fostering a culture of inclusiveness and respect where every employee feels valued and supported.

ACCIONA has been given the Top Employer 2022, 2023, 2024 & 2025 certification in Australia, which certifies the company’s commitment to excellence in human resources management and those who focus on putting their people first through their exceptional HR policies. Since establishing a presence in Australia in 2002, ACCIONA has made significant investments in local opportunities and project development. ACCIONA employs more than 3,000 people in its renewable energy, infrastructure and water projects across Australia & New Zealand.

We are an Equal Opportunity Employer and promote equality and diversity. Indigenous Australians and candidates from minority groups are encouraged to apply.

ACCIONA has been given the Top Employer 2022, 2023, 2024 & 2025 certification in Australia, which certifies the company’s commitment to excellence in human resources management and those who focus on putting their people first through their exceptional HR policies. Since establishing a presence in Australia in 2002, ACCIONA has made significant investments in local opportunities and project development. ACCIONA employs more than 3,000 people in its renewable energy, infrastructure and water projects across Australia & New Zealand.

We are an Equal Opportunity Employer and promote equality and diversity. Indigenous Australians and candidates from minority groups are encouraged to apply.