Site Engineer, Commissioning in Wanneroo

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 to our mission to design a better planet.

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.

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 decisions
• 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:

• 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.