Operational Technology Integration Engineer

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. 

We are seeking a highly skilled and experienced Operational Technology Integration Engineer. The ideal candidate will possess an understanding of energy storage technologies, combined with expertise in software engineering, automation, and control systems to innovate and improve our solutions.

If you are looking to join a team responsible for award-winning, internationally recognised projects in Energy Storage to drive the next generation of decentralised controls systems you need to talk with us!

We are looking for operational reasons to place this role in the UK or Finland only.

Key Responsibilities:

• As part of the Operational Technology team, you will develop, configure and deploy software & control technologies on our GEMS SW platform according to our solution standards and project requirements that solves electrical power and energy problems. You will often need to innovate to meet new challenges.
• When it comes to coding, you will most often code in Java but will also involve JavaScript and Python languages from time to time.#
• You will need to read decent amount of electrical engineering documents to understand the design and will develop technical documents of your own according to our standards.
• You will work closely with other electrical, mechanical and software engineers when delivering solutions to projects.
• You may need to travel to the site to help commissioning your work at large solar, wind, energy storage or hybrid power plants. Our realistic expectations are for approximately up to 20% travel.

What will I need to be successful:

• Experience or knowledge of SCADA standards and products
• Basic knowledge of programming – Java, JavaScript, python.
• Knowledge of Networking – VLAN, NAT, and basic principle of switches and routers configuration.
• Knowledge of industrial communication protocol (Modbus, OPC DA/OPC UA).
• Be passionate about renewable energy, we are a global business and flexibility at times is required.
• Knowledge on Grid Code Compliance (IEEE 1547) related testing.
• Attention to details and good time management skill.
• Ability to multi-task and engage multiple projects simultaneously

Education:

• Degree in Electrical Engineering with experience in substations, power plants and power transmission systems.

Optional and preferred (we can teach you if you are a fast learner):

• Knowledge of TCP/IP network communication devices and protocols
• Java experience#
• Experience with industry protocols such as DNP3, IEC-61850, IEC-61870-104-5
• Grasp of cybersecurity principles and practices in software products
• Familiar with Linux OS
• Working experience with Modern software development management tools including JIRA, GIT and Confluence.#
• Familiar with remote accesses, SSH and tunnelling.

Contact & next steps:  

Please submit your application before the deadline through our Careers portal. Applications submitted via email will not be considered. After submitting your application, you will receive a confirmation email.

In case you have any questions, please don't hesitate to contact: Jason Crouch, Talent Partner, Global Talent Segment jason.crouch@wartsila.com 

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.

Last application date: 07/06/2026 

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. 

#WärtsiläEnergyStorage