Job Description

Wärtsilä Energy Storage is powering the shift to a cleaner, more resilient grid.

We work at the front lines of the energy transition, helping partners around the world maximize the value of renewables through grid-scale battery systems, advanced software, and expert services. Our portfolio includes the industry-leading GEMS Digital Energy Platform, utility-scale battery solutions, and lifecycle services that keep storage assets optimized and ready when it matters most.

With over 17 GWh of storage deployed or under contract across 130+ projects globally, we’re shaping how the grid of the future works.

In a world of rising complexity and accelerating change, we’re looking for future-focused talent to help us design, deliver, and support the energy systems of tomorrow.

Sound like your kind of challenge? Let’s build it together.

As Field Service Engineer – (Battery Energy Storage Systems)

We are seeking dedicated and highly skilled Field Service Technician or Field Service Engineer in Battery Energy Storage systems. The preferred location for this position is Port Pirie in South Australia

The ideal candidate has a degree in Electrical Engineering or Electrical Trade, and 2+ years of experience with energy storage systems and/or renewable energy, power systems design and communication networks.

Your role and responsibilities

As Field Service Engineer in Battery Energy Storage Systems, you will be involved in a dynamic mix of technical and customer-focused tasks. You will perform field service activities, ensuring our battery energy storage systems operate seamlessly. This includes supporting project teams during commissioning, addressing technical issues promptly and proposing improvements to enhance product quality and reduce costs.

Your role will also involve maintaining strong relationships with customers through effective communication and service, preparing detailed analytical reports and acting as a technical advisor during customer meetings. You will spend at least 50% of your time on-site, directly engaging with customers and resolving issues hands-on.

What you will do:

• You perform field service activities as per long-term service agreements.
• You conduct BESS planned and unplanned maintenance.
• You support project teams during commissioning of battery energy storage systems.
• You address and report warranty and technical issues and propose product improvements.
• You maintain customer relationships through effective communication.
• You prepare and present service reports with recommendations.
• You act as a technical advisor to customer meetings.
• You write service work reports and maintain documentation.

Requirements for the position:

• Bachelor's Degree in Electrical Engineering or equivalent Electrical Trade.
• Valid A Grade South Australia, Electrical license.
• Preferably 2 to 4 years’ experience in battery energy storage systems, renewable energy, power systems design and communication networks.
• You have knowledge of LV and MV systems, EMS, battery modules, inverter technology, online platform communication systems, industrial networks and protocols, PLC and control systems, PV systems, protection relays, variable frequency drives, HVAC, fire alarm and suppression systems, advanced firewall and router programming, AS/NZS 3000:2018 electrical installations.
• You have experience in HV Switching Operations.
• You have experience in BESS or Renewable Energy installation, maintenance, troubleshooting and commissioning.
• You are detail-oriented, have a project management mindset, good collaboration skills, proficient in MS Office, excellent report writing and communication skills.

• A valid driver's license.
• Willingness to travel at least 70% of the time.
• Must be authorized to work in Australia without sponsorship.
• Relocation not applicable for internal employees.

Why you and us

You are valuated – as your true self. At Wärtsilä we value diversity and are committed in supporting inclusive work community.

Your growth is supported. We believe in continuous learning & teamwork. Wärtsilian community has your back when it comes to development opportunities – so you can develop beyond your potential.

You get to make a difference. Innovation and sustainability are important for us. Every day, we put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality.

Contact & next steps

Submit your application before the deadline through our Careers portal. Applications through email will not be considered. After submitting your application you’ll receive a confirmation email. We try our best to get back to everyone within 2-3 weeks after application deadline.

Please apply by 19/05/2026  Australian Standard Time. Our recruiting tool recognizes the time zone where the job ad has been published and closes the application period according to same time zone.

Last application date: 19/05/2026 

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities. 

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country.

This is Wärtsilä 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com 

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