Principal HV Cable System Design Engineer

London
Energy At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

Jacobs is playing a leading role in the global energy transition. As our UK and Continental Europe team continues to expand, we are seeking a Principal Cable System Engineer to support a range of high-profile projects across our Power & Energy portfolio. This includes high voltage AIS and GIS Substations, transmission system assets, HVDC interconnectors, and energy storage systems.

You will lead the design delivery for Cable System Projects up to 400kV, from the tendering stage through to project handover. Responsibilities include but are not limited to:

  • Developing HV/EHV cabling systems specifications, concept/detailed design and design review, estimation, site supervision and support as required.
  • Provide technical support to the team on all aspects of HV cable system engineering and design
  • Prepare plant and equipment technical specification, power cable route specifications, tender specifications, technical and progress reports
  • Ensuring correct and accurate interface with other engineering functions involved in the projects, attend, and conduct internal and external meetings with colleagues, clients, and subcontractors.
  • Perform technical calculations including cable size, rating calculations, TMF and EMF calculations, Sheath induced voltage calculations and other.
  • Perform design reviews, verification of design
  • Ensuring all project designs are compliant with CDM regulations, relevant legislation and company procedures
  • Assist with temporary works design schemes.
  • Maintain good working relations with client / designer / Team, together with our supply chain.
  • Ensure that the drawings and specification documents contain sufficient, accurate information for construction of the works. Formally request any missing information in sufficient time to allow the programme to proceed without delay.
  • Ensure that inspection and test plans are completed as required by the PMP / Specification, including a check of dimension accuracy and quality

Here's what you'll need

  • Degree (or equivalent) in Electrical Power Engineering.
  • Previous experience with consultancy, contractor or utility in the energy sector.
  • Extensive experience in a cable related role supporting FEED design and/or detailed design.
  • Able to manage and lead HV/EHV cable designs at all projects stages. 
  • Experienced user of CYMCAP to support cable system design 
  • Experience of working at EHV transmission voltages 
  • Experience in the design of HV and EHV cable systems, for both HVAC and HVDC systems.

Why Jacobs?
People are Jacobs’ greatest asset, and we offer a competitive package to retain and attract the best talent.

In addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.

Work-life balance and flexibility is a key focus area for Jacobs. We’re happy to discuss flexible working hours, patterns and locations to suit you and our business.

#energypowerjobs #ourjacobs #career #opportunity #london #exeter #leeds #manchester #birmingham #glasgow #bristol #belfast #designengineer #HVcable #energyeurope #energytransition #LI-JF1

Joining Jacobs not only connects you locally but globally. Our values stand on a foundation of safety, integrity, inclusion and belonging. We put people at the heart of our business, and we truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees.

With safety and flexibility always top of mind, we’ve gone beyond traditional ways of working so you have the support, means and space to maximize your potential. You’ll uncover flexible working arrangements, benefits, and opportunities, from well-being benefits to our global giving and volunteering program, to exploring new and inventive ways to help our clients make the world a better place. No matter what drives you, you’ll discover how you can cultivate, nurture, and achieve your goals – all at a single global company. Find out more about life at Jacobs .

We aim to embed inclusion and belonging in everything we do. We know that if we are inclusive, we’re more connected and creative. We accept people for who they are, and we champion the richness of different perspectives, lived experiences and backgrounds in the workplace, as a source of learning and innovation. We are committed to building vibrant communities within Jacobs, including through our Jacobs Employee Networks, Communities of Practice and our Find Your Community initiatives, allowing every employee to find connection, purpose, and belonging. Find out more about our  Jacobs Employee Networks here .

Jacobs partners with VERCIDA to help us attract and retain talent from a wide range of backgrounds. For greater online accessibility please visit to view and access our roles.

As a disability confident employer, we will interview disabled candidates who best meet the criteria. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support .

Locations

City State Country
Exeter Devon United Kingdom
Leeds West Yorkshire United Kingdom
Wokingham Berkshire United Kingdom
Manchester Greater Manchester United Kingdom
Bristol Bristol City United Kingdom
Newcastle upon Tyne Tyne and Wear United Kingdom
Birmingham West Midlands United Kingdom
Belfast Antrim United Kingdom
Glasgow Lanarkshire United Kingdom
London Greater London United Kingdom
Posted 2026-04-21

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