A unique place to grow your career

At Sellafield Ltd, we are harnessing our expertise; bringing together world-class skills and innovative technology to solve complex nuclear, infrastructure, and engineering challenges. By joining Sellafield Ltd, you join an amazing team of people, from all walks of life, where you can thrive in a connected, considerate culture of innovation, collaboration, and community; and play a significant part in the UK’s sustainable nuclear future.

About the role

CE&l Lead Design Engineer is responsible for leading a team of Internal and External Engineers and Designers to produce design deliverables from all stages of the SL gated Process from Studies (scoping for asset care) through to Detailed Design and support to Manufacture, Installation and Commissioning.

The vacancies are for power systems design engineers working within the Sellafield ESI specialist CE&I design team. The work will be linked to Project Delivery and provision of the subject matter expertise into the wider design community.

The successful candidate will be responsible for creating and updating the projects working ETAP model, production of fault calculations, protection reports and arc flash risk assessments. The candidate will provide power and protection specialism support to the wider design team. The candidate will contribute to the updating of Sellafield’s engineering standards and best practice.

Key responsibilities

• Develop engineering schemes to support the selection of the viable option during studies
• Define, implement and deliver engineering design work packages that are safe, legally compliant, fit for purpose and meet functional and business requirements to contribute to the successful completion of Engineering Design projects.
• Assist the discharging of Intelligent Customer duties to support the production of design deliverables by the supply chain (as appropriate to the delivery mechanism).
• Provide engineering design support to the System Engineering community (or other relevant disciplines / areas) to address emergent issues and provide design solutions to support existing assets.
• Pragmatically complies with all legislative, regulatory and company policy standards and procedures e.g. safety, quality, risk, security etc. applicable to the role.
• Specialist area support to Projects
• Competent to manage a team of engineers providing specialist technical and investigation expertise in support of projects.
• Promote best practice and the sharing of LFE.

Your Skills and Qualifications

Essential Skills

Technical experience / knowledge of:
• Working knowledge of BS EN 60909 Fault Calculations
• Working knowledge of ETAP modelling software
• Experience with Protection and control systems (11kV & 400V)
• Experience of 11kV & 400V substation design
• Experience of unit protection calculations (differential & high-impedance schemes)
• Relevant design experience relating to Electrical infrastructure upgrades and working with aging assets.
• Experience conducting Arc Flash Risk assessments in accordance with IEEE 1584
• Demonstrable track record of delivery.
• Demonstrable excellent verbal and written communication skills.
• Demonstrable evidence of strong leadership and organisation skills.
• Pragmatic approach to problem solving and ability to apply engineering judgement.
• Incorporated / Chartered Engineer Status from a relevant professional institution. (applicants who are imminently in the process of applying or waiting to hear the outcome from the IET will be considered)

Desirable Skills

Technical experience / knowledge of:
• Experience of Sellafield Design Processes
• Experience with other CAD tools namely Trimble, ERACs and Digsilent
• Experience with IEC61850 and power system SCADAs
• Experience of working in a multi-discipline environment.
• Project experience and understanding how engineering solutions fit into the wider project value stream.
• Experience in contributing to/developing programmes and estimates to support project/task planning.
• Familiarity with the Sellafield site and the interconnectivity between plants.

Why us?

At Sellafield Ltd, we are committed to supporting our employees in fulfilling their potential. With having 100 years of work in front of us, we offer comprehensive training and development opportunities, enabling you to feel inspired in your role. Whatever area you join us in, you’ll find a genuinely exciting and rewarding career.

Making sure our employees feel supported is important to us. Therefore, to help you get the most out of life in and outside of work, we also offer a range of employee benefits:
• You will benefit from an annual bonus of up to 15%, made up of company and personal performance
• An attractive defined contribution pension scheme – the company will match up to 13.5% for a 7% employee contribution!
• 30 days annual leave + bank holidays. Plus, the ability to purchase an extra 2.5 days per year.
• The ability to carry over 10 days annual leave each financial year
• Paid Sick Leave
• Family Friendly Policies – Visit our Rewards & Benefits page to read more
• Cycle to Work Scheme
• Lifestyle Benefits sasra.co.uk
• Learning & Development Opportunities https://careers.sellafieldsite.co.uk/work-with-us/learning-and-development/
• Reward & Recognition Policies
• Welfare & Employee Assistance Programme
• Free Aviva Health App & Annual Health Check
• MyDiscounts – Employee Savings & Discounts
• MyBenefits – A Charity Giving Scheme
• Many, many more! Click this link to visit our Rewards & Benefits page: https://careers.sellafieldsite.co.uk/work-with-us/rewards-and-benefits/

Sellafield Ltd is a unique place to grow your career, offering a remarkable blend of role variety, job security, personal growth, professional development, and truly significant work. This is your opportunity to tackle some of the biggest challenges in the nuclear, infrastructural and engineering worlds and create a clean and safe environment for generations to come. Explore Sellafield Ltd today.

Additional Information

• The closing date for this vacancy is Monday 16th November 2026

• In the event of a high number of responses to any advert, Sellafield Ltd reserves the right to close the advert early. Once closed, the advert will be removed from our website. We encourage you to submit your application as soon as possible to avoid disappointment.

• Please regularly check your Spam/Junk folders for news about this vacancy, correspondence could contain invitations to interview and other important updates.

• Qualifications
As part of the application process, you will be asked to provide evidence of your qualifications at the application stage which will ensure a smooth process and prevent delays.

• Interviews are expected to take place w/c Monday 30th November 2026.

• Right to Work in the UK
As part of our screening process, all candidates must demonstrate their right to work in the UK.
If you are not a UK national, you will be required to provide evidence of your immigration status. This is generated through the UK Government online service via the GOV.UK services below:
- A valid eVisa (digital immigration status) share code
https://www.gov.uk/evisa/view-evisa-get-share-code-prove-immigration-status
- A Right to Work share code
https://www.gov.uk/prove-right-to-work

Applicants who are not UK nationals must provide a valid Right to Work share code and evidence of their eVisa status at the point of application. Applications submitted without this information are not able to be progressed.

• Please be aware that this role is subject to achieving security clearance. This role requires higher level of National Security Vetting where applicants must typically have 5 or 10 years of continuous residency in the UK. Factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the level of clearance you’re able to achieve.

• Sellafield Ltd are recognised as a Disability Confident Employer (Level 3). Disability Confident employers offer an interview to disabled applicants that meet the minimum criteria for a vacancy. Sellafield Ltd define the minimum criteria as the ‘essential skills’ which are listed on the vacancy notice. Whilst completing your application form, you will be able to indicate if you wish to be considered under the disability confident scheme. If you would prefer to discuss this directly with us, please contact the GBS Recruitment team on recruitment@sellafieldcloud.co.uk