Company Description Global Testing Services (GTS), established in 2001, delivers specialist high-voltage maintenance, construction, and commissioning services to Australia’s resources, renewables, and utilities industries. As a majority Indigenous-owned business recognised by Supply Nation, GTS supports critical operations in mining, oil and gas, power, and infrastructure sectors. The company is known for precision, safety, and efficiency, providing end-to-end solutions from system design through to long-term maintenance.

GTS has a strong track record of completing projects on time and within budget, combining advanced technology with deep technical expertise. With longstanding partnerships with leading clients such as BHP, Rio Tinto, Western Power, and many others, GTS is recognised as a trusted partner for high-voltage systems and equipment.

Role Description The Transformer Tap Changer Specialist is a full-time, on-site role based in Perth, WA. The specialist will perform inspection, testing, diagnostics, and maintenance of on-load and off-load transformer tap changers, ensuring protected and reliable operation in high-voltage environments. Day-to-day tasks include conducting condition assessments, performing repairs and component replacements, executing commissioning and routine servicing, and documenting all work in accordance with company procedures and industry standards.

The role involves interpreting technical drawings and manufacturer specifications, identifying defects and root causes of failures,



and recommending corrective actions to optimise asset performance. The specialist will collaborate with project engineers, field technicians, and client representatives to plan work, support shutdowns and outages, and maintain a robust focus on safety and quality.

Qualifications

- Strong technical knowledge of power transformers, on-load and off-load tap changers, and high-voltage equipment, including inspection, testing, and fault diagnostics.
- Practical experience in mechanical and electrical maintenance, including disassembly, component replacement, recalibration, and recommissioning of transformer tap changers.
- Ability to interpret electrical schematics, mechanical drawings, manufacturer manuals, and technical standards relevant to transformer and tap changer equipment.
- Demonstrated commitment to safety, including familiarity with high-voltage safety procedures, lock-out/tag-out practices, and relevant Australian standards.
- Solid documentation and reporting skills, with the ability to prepare service reports, test records, and maintenance logs with accuracy and clarity.
- Relevant trade qualification or technical certification (e.g., Electrical Fitter/Mechanic, High-Voltage Technician) and experience in utility, mining, or industrial power systems.
- Strong problem-solving skills, attention to detail, and the ability to work both independently and as part of a multidisciplinary team on client sites.
- Willingness to travel to project locations as required, and to work in field conditions

📌 Transformer tap changer specialist (Perth)
🏢 Global Testing Services
📍 Perth