High Voltage Lead Engineer at NEXTDC

As a High Voltage Lead Engineer, you will provide technical leadership and operational oversight of all High Voltage (HV) electrical infrastructure across our data centre campus. You will ensure the safe, reliable, and compliant operation of mission-critical power systems that underpin hyperscale digital infrastructure. This is a hands-on technical leadership role where safety, precision, and uptime are paramount. What you’ll do • Take technical ownership of all HV electrical infrastructure, including switchgear, transformers, protection systems, and distribution networks • Plan, coordinate, and execute high voltage switching operations in accordance with approved procedures and safety standards • Issue and manage HV permits and access authorities, ensuring strict compliance with electrical safety requirements • Maintain and enforce HV operational procedures, including switching, isolation, emergency response, and safety protocols • Coordinate planned outages and isolations for maintenance, upgrades, and fault resolution • Act as the key interface with electricity utility providers for supply, outages, and infrastructure coordination • Oversee preventative and corrective maintenance programs for HV systems • Lead fault investigations, root cause analysis, and development of corrective and preventive actions • Review and approve Method of Procedure (MOP), Emergency Operating Procedures (EOP), and Safe Work Instructions (SWI) • Maintain accurate operational records including switching logs, outage documentation, and compliance records • Support commissioning and energisation of new HV infrastructure and expansion projects • Provide escalation support and after-hours technical response for HV incidents • Mentor and provide technical guidance to engineers and technicians working around HV systems • Ensure full compliance with electrical safety regulations, industry standards, and internal frameworks • Contribute to continuous improvement of reliability, safety, and operational performanceWhat you’ll bring • Strong expertise in high voltage electrical systems in mission-critical environments • Proven experience performing HV switching operations and managing electrical isolations • Deep knowledge of HV switchgear, transformers, protection systems, and power distribution networks • Strong understanding of electrical safety regulations, permit systems, and safe work practices • Ability to interpret electrical schematics, single line diagrams, and protection studies • Strong analytical skills with the ability to diagnose complex electrical faults • Excellent communication skills with the ability to explain technical concepts clearly • Strong organisational skills and attention to detail in documentation and procedures • Ability to operate effectively in a high-availability, safety-critical environment • Experience with BMS, SCADA, and power monitoring systems • Strong stakeholder management across internal teams, contractors, and utilities