Senior Project Engineer, Mechanical

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.

• Personalised career progression plans to help you achieve your goals
• Join a business with an excellent safety record and robust systems and processes
• Competitive salary in line with experience + Acciona Bonus Incentive Scheme

The Senior Project Engineer – Mechanical & Piping will play a key role in coordinating and delivering mechanical and piping works across the Alkimos Seawater Alliance project. This position is responsible for ensuring engineering, procurement, construction, and quality activities are executed safely, efficiently, and in line with project objectives, supporting successful delivery on time and within budget.

The Project

The project includes the design, construction, operation and maintenance of a major desalination plant, with first production targeted for 2028. Works include marine works and tunnels, a seawater intake system, a reverse osmosis desalination plant, groundwater systems, drinking water storage and pumping infrastructure, supported by civil, electrical and bulk earthworks.

Key Accountabilities

• Coordinate and manage mechanical and piping engineering works, ensuring alignment with project scope, schedule, and quality requirements
• Support safe delivery by driving safety initiatives, conducting inspections, reviewing SWMS, and managing subcontractor safety performance
• Lead procurement processes including RFQs, evaluation of suppliers, and development of delivery strategies
• Develop and review construction methodologies, workpacks, and temporary works to ensure effective and compliant execution
• Manage project schedules, monitor critical path activities, and work with planning teams to mitigate risks and maintain milestones
• Oversee construction engineering activities, ensuring method statements, QA processes, and technical requirements are met
• Maintain cost control and forecasting, including budget tracking, reporting, and identifying risks and opportunities
• Utilise digital engineering tools to support planning, design coordination, and site execution
• Build and lead engineering teams, driving performance, accountability, and continuous improvement
• Ensure compliance with quality systems, including ITPs, NCR management, and documentation control

• Demonstrated experience in a Senior Project Engineer role within major infrastructure or construction projects (mechanical/piping preferred)
• Strong knowledge of project delivery including engineering coordination, procurement, construction, and commissioning
• Proven ability to manage schedules, critical path activities, and multi-disciplinary interfaces
• Experience with subcontractor management, contract administration, and commercial awareness
• Strong capability in cost control, forecasting, and financial reporting
• Solid understanding of safety, environmental, and quality management systems
• Experience using digital engineering tools and project systems (e.g. planning software, BIM or similar)
• Excellent leadership, communication, and stakeholder management skills

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.