Commissioning Engineer – Substations

Company: ACCIONA

Location: Central‑West Orana Transmission Line Project (project office in Sydney CBD, with occasional site visits.)

Job Overview: ACCIONA, in partnership with COBRA and Endeavour Energy, is building a renewable energy transmission network. The Central‑West Orana Renewable Energy Zone (REZ) Transmission Project will establish high‑capacity lines and energy hubs to transport power from solar and wind farms. We’re seeking a dedicated Commissioning Engineer to join our Substations team.

Key Responsibilities

- Conduct thorough testing of electrical equipment such as transformers, circuit breakers, protection relays, and control systems to ensure they meet design specifications and operational standards.
- Prepare, review, and maintain detailed commissioning documents, including test procedures, reports, and equipment inspection checklists, ensuring compliance with project and regulatory requirements.
- Collaborate with project teams, including designers, contractors, and client representatives, to ensure alignment and timely execution of commissioning tasks.
- Identify and resolve issues during the commissioning phase, including troubleshooting equipment malfunctions or system discrepancies.
- Conduct site visits to perform site acceptance tests and commission existing systems to be ready for energisation.
- Implement the communications scheme, including the program router, firewalls, and network switches to connect substations to control rooms.

Criteria For Selection





- 5+ years of experience in electrical commissioning, and/or working on substation projects.
- Strong knowledge of electrical codes, safety regulations, and hands‑on experience with high‑voltage equipment, relay protection systems, and SCADA integration.
- Solid analytical skills and attention to detail are essential for troubleshooting and ensuring compliance with industry standards.
- Hands‑on experience with protection relays, and secondary systems (CTs, VTs, CVTs, PIU); Routers and Switches preferred.
- Experience in performing secondary injection testing, writing test plans (ITPs).
- Experience in IEC61850 substation communication protocols.

Working Arrangement

Commissioning Engineer positions start in our project office in Sydney CBD, with occasional site visits. Once the project is fully operational, it will transition to DIDO: 14 days onsite in camp style accommodation and 7 days offshore, on a roster‑based arrangement out of the Central West Orana Transmission Line Project.

We welcome applicants of all backgrounds, identities, and experiences. If you believe you bring the capabilities to succeed in this role, we'd love to hear from you. We look forward to continuing to build our supportive workplace together.

Employment Details

Seniority level: Mid‑Senior level

Employment type: Full‑time

Industry: Construction

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📌 Commissioning Engineer - Substations (City of Sydney)
🏢 Acciona
📍 City of Sydney