We are a global company, a leader in developing regenerative infrastructure that generates a positive impact on society. Our workforce—comprising over 65,000 professionals across more than 40 countries on all five continents—supports our mission to design a better planet. We seek individuals who want to make a difference, promote sustainable development, and deliver solutions to the world’s greatest challenges, including climate change, overpopulation, and water scarcity. Join us in pursuing solutions for a sustainable future. ACCIONA, within its WATER business line and specifically its Commissioning Department, requires an Assembly Supervisor to support projects in Australia and the Americas. Job Description You will be responsible for coordinating, controlling, and executing all activities related to mechanical, electromechanical, and piping installation in water treatment plant projects, including desalination, wastewater treatment, and potable water production facilities. You will ensure all work complies with engineering specifications, applicable regulations, and quality, safety, and environmental standards. Key responsibilities include: * Planning and coordination of works. * Supervision of mechanical and equipment installation. * Quality control, safety and environmental management. * Coordination with engineering and site management. * Document management, testing, commissioning, technical support, and subcontractor supervision. Candidate Requirements Academic Qualifications: * Industrial Engineer * Technical Industrial Engineer * Vocational Training (FP) in Mechanical, Electrical, or Instrumentation & Control (I&C) Required Experience: * 10 years’ experience, of which at least 5 years must be in water treatment plants, in engineering, commissioning, operations, or maintenance. Desalination and reverse osmosis experience is required. Languages: * English: C1 level * French is desirable Other Requirements: * Valid driver’s license (Class B1) * Advanced computer skills * Full willingness to travel internationally Additional Competencies: * We seek a candidate with leadership, communication, and management skills, as well as the ability to work effectively within large, multidisciplinary, and multicultural teams. *We are a company that values diversity as a source of talent and therefore actively foster an inclusive environment promoting respect, belonging, and commitment so that everyone can participate on equal terms. We welcome applications from all individuals regardless of origin, circumstances, background, or personal condition. ACCIONA has been certified as a Top Employer in 2021, 2022, 2023, 2024, and 2025—the recognition awarded to one of Spain’s best companies to work for.*