SSEN Transmission
Principal Engineer Building Services - Mechanical

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Base Location: Flexible UK
We're proud to offer a Flexible First approach to work, and this role is no exception. We will, however, need your base office location to be one of our SSEN offices or depots around Scotland.
Office Locations: Aberdeen, Inverness, Perth.
Salary: £59,800 to £89,800 + performance-related bonus + car/car allowance + a range of other benefits to support your family, finances and wellbeing.
Working Pattern: Permanent | Full Time | Flexible First options available
The role
At SSEN Transmission, we're building a smarter, more flexible network for net zero, delivering clean, secure and affordable electricity for generations to come. We're looking for a Principal Engineer - Building Services to help define technical policy, influence industry standards and support the delivery of innovative, future-ready projects across our transmission network.
You will
- Write, maintain and own technical specifications required for substation mechanical services and their interfaces with plant and equipment used on the transmission network, including battery systems, fire protection, ventilation, water supplies, air conditioning and innovative new technologies.
- Review existing specifications and update them based on lessons learned from projects, emerging technology and changes in relevant standards.
- As part of the Technical Authority review process, approve apparatus, equipment, inspection test plans and inspection test records, witness tests and produce Technical Authority reports to ensure selected technology is adequately tested, proven and validated.
- Provide subject matter expert input to design reviews carried out by the Design Authority, offering specialist input where required and verifying that project proposals are fit for purpose.
- Provide technical consultancy across SSEN Transmission, share specialist knowledge, support staff development and represent SSEN Transmission at industry events and working groups such as ENA, IEC or CIGRE.
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You have
- A degree in Mechanical Engineering or another relevant engineering discipline, with Chartered Engineer status through a relevant institution or a commitment to working towards chartered status.
- Expert-level experience in the design, specification, construction, operation and maintenance of mechanical services within a data centre, substation or industrial environment.
- The ability to technically assess issues, critically review a range of solutions and apply detailed knowledge of relevant national and international standards, including National Grid, Energy Networks Association, British and European specifications and standards.
- Experience managing a range of stakeholders, including engineering, asset management, contractors and other technical partners.
- A data-led approach to design validation and specification compliance for transmission substation building requirements, with experience in manufacturing, testing or commissioning of transmission voltage substation electrical services and auxiliary systems considered advantageous.
About SSE
SSE’s purpose is to provide energy needed today while building a better world of energy for tomorrow. We do this by developing, building, operating and investing in electricity infrastructure and businesses needed in the energy transition. Our Transforming for Growth investment plan sees us investing £33bn in critical electricity infrastructure across the five years to 2030.


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SSEN Transmission own and operate the electricity transmission network across the north of Scotland. We transport energy from where it is generated to where it is needed, ensuring a safe and reliable electricity supply for the communities we serve. But that's not all – we're upgrading the grid to deliver cleaner, homegrown energy for the future and building a network for net zero to create secure power for generations to come.
Flexible Benefits To Fit Your Life
Enjoy discounts on private healthcare and gym memberships. Wellbeing benefits like a free online GP and 24/7 counselling service. Interest-free loans on tech and transport season tickets, or a new bike with our Cycle to Work scheme. As well as generous family entitlements such as maternity and adoption pay, and paternity leave.
Work with an equal opportunity employer
SSE will make any reasonable adjustments you need to ensure that your application and experience with us is positive. Please contact Andy on andrew.torrance@sse.com / 01738 275370 to discuss how we can support you.
We're dedicated to fostering an open and inclusive workplace where people from all backgrounds can thrive. We create equal opportunities for everyone to succeed and especially welcome applications from those who may not be well represented in our workforce or industry.
Ready to apply?
Start your online application using the Apply Now box on this page. We only accept applications made online. We'll be in touch after the closing date to let you know if we'll be taking your application further. If you're offered a role with SSE, you'll need to complete a criminality check and a credit check before you start work.
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