Mechanical Supervisor

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
The Project
ACCIONA has been selected to deliver Western Harbour Tunnel – Stage 2, Sydney’s third harbour crossing. The new Western Harbour Tunnel (WHT) will connect to WestConnex at the Rozelle Interchange, cross underneath Sydney Harbour between Birchgrove and Waverton, and connect with the Warringah Freeway near North Sydney.
Project scope includes:
Construction of approximately 4.8 kilometres of mainline tunnels with three lanes in each direction
Civil, Mechanical and Electrical fitout of Stage 1 and Stage 2 tunnels
Surface level work, including on and off ramps and tie-in work to the Warringah Freeway

As the Mechanical Supervisor, you will lead all TBM mechanical activities across assembly, commissioning, operations, maintenance and disassembly. The role coordinates TBM mechanics and maintenance crews, sets work priorities and ensures compliance with OEM and project requirements. You will support continuous tunnelling operations by managing faults, driving safe work practices and maintaining strong communication across rotating rosters.

Specific Tasks Include
Supervise TBM mechanical work across all phases
Lead and mentor mechanics and maintenance crews
Diagnose and resolve mechanical and hydraulic faults across all TBM systems (e.g. cutterhead, slurry circuit, thrust, cooling, pumps and auxiliary plant)
Plan and prioritise maintenance and repair actions
Apply and enforce safety, quality and environmental processes
Complete inspections, reports and audit documentation
Maintain consistent handovers across rotating rosters
Required Skills and Competencies
Qualifications and Experience
Trade qualification in mechanical field
Prior experience working on major infrastructure projects
Strong TBM (ideally Slurry shield) or heavy plant maintenance experience
Proven team leadership on rotating rosters
Clear commitment to safety and quality
Willingness to work effectively on rotating rosters (including nights, weekends and 7/3-7/4)
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.