Primary Design Engineer

Primary Design Engineer – Zone Substations 

Who We Are 

Zinfra is a leading partner in the design, build, operation and maintenance of Australia’s energy and utilities infrastructure. Delivering a $1B portfolio annually, the work we do is essential to bringing energy to our communities safely and reliably, while powering the nation’s energy transition. With a diverse workforce of more than 2,300, we expertly deliver our services across Australia.  

At Zinfra, we design, build and maintain the energy networks that keep communities connected. We know great engineering doesn’t happen in isolation — it happens when diverse perspectives, strong collaboration and thoughtful leadership come together. 

We’re looking for an experienced Primary Design Engineer to join our Design Team, working on Zone Substation projects across sub-transmission and distribution networks. This role is ideal for someone who enjoys technical depth and mentoring others, takes pride in quality, and wants their work to have real, visible impact.

If you value supportive teams, clear standards, and being trusted to do your best work — we’d love to hear from you.

You’ll play a key role in delivering safe, high-quality Zone Substation designs while supporting others to succeed.

Your work will include:

• Designing and delivering Zone Substation primary designs, including earthing and cable rating studies
• Producing and maintaining your own AutoCAD drafting for new and upgrade works
• Preparing design documentation that meets Jemena Standards, Australian Standards and regulatory requirements
• Reviewing external DSP designs and providing constructive, solutions-focused feedback
• Partnering closely with Asset Managers, Project Managers, Construction Managers and DSPs to enable smooth project delivery
• Providing engineering design and commissioning support to internal teams and subcontractors
• Auditing, approving and signing off designs with confidence and care
• Investigating and proposing practical solutions to sub-transmission and distribution challenges within Zone Substations
• Managing, revising and updating Zone Substation drawings and documentation based on field feedback
• Coordinating external drafting resources when required to support delivery timelines
• Supporting estimates, scopes, specifications and early design development
• Mentoring and developing team members, contributing to a positive, capable and connected team culture 

We’re looking for someone who combines technical expertise with a collaborative mindset.

Your experience & qualifications

• Engineering qualifications eligible for graduate membership of Engineers Australia (or equivalent)
• Solid experience in Primary design for Zone Substations
• Strong knowledge of primary plant and equipment up to 66kV
• Experience producing clear, logical drawings that communicate design intent
• Familiarity with primary design tools such as AutoCAD, CYMCAP, CDEGS, drawBRIDGE (or similar)
• Understanding of sub-transmission and distribution systems and zone substation operations

Why Join Us?

This is more than just a technical role—this is an opportunity to grow your impact in a supportive, values-led environment. You’ll be joining a team that values trust, clarity, care, and collaboration—where diverse perspectives are welcomed, and every voice matters.

We champion and value diversity in life and work experiences, as we know everyone benefits from broader diversity of thoughts in our problem solving, decision making and ability to innovate. We encourage applications from everyone, including First Nations people, veterans, people living with disability, and members of the LGBTIQA+ community. 

We believe Zinfra is a great place to belong—but don’t just take our word for it; hear our team members share what working at Zinfra means to them.