Due to strategic growth and a strong project pipeline, we are looking for a Principal level Primary Systems Engineer to join our Energy Team, in Sydney. As a Principal Engineer you will lead the design and delivery of substation design, drive technical excellence across multi-disciplinary teams and contribute to some of the largest projects / programs of work across Australia's high-voltage energy network. How you’ll make a difference:Provide technical leadership across HV/EHV substation design, including layouts, equipment ratings, earthing, insulation coordination, HV cables, and conduit designs, ensuring compliance with Australian Standards and client requirements.Work collaboratively across the Transmission & Distribution team, providing technical support and guidance to ensure quality project outcomes are delivered on time and on budget.Lead project delivery from concept through detailed design, including specifications, calculations, fault level analysis, short circuit forces, and interfacing with other disciplines to resolve design issues.Engage with key clients, contributing to one of the most ambitious transmission programs in decades, providing expert technical input and ensuring exceptional project delivery.Drive innovation and knowledge sharing, applying advanced engineering software and techniques, mentoring team members, and promoting best-practice design standards.