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.

Are you passionate about ensuring new facilities, equipment, and systems are safe, practical, and ready for real-world operation?

We’re looking for a Commissioning Operability Team Member to play a key role in bridging the gap between project delivery and operational excellence. You’ll work closely with project teams, engineers, operators, and maintenance personnel to ensure new assets are designed, commissioned, and handed over with the end user firmly in mind.

This is an exciting opportunity to influence projects from development through to operational readiness, ensuring that people, processes, training, and documentation are in place to support safe and efficient operations from day one.

What You’ll Do

As a Commissioning Operability Team Member, you will:
Support Operational Readiness
• Represent operations and maintenance throughout the project lifecycle.
• Support the transition of facilities and systems from project delivery into routine operations.

Develop Procedures and Documentation
• Produce clear and effective operating and maintenance instructions.
• Review and validate procedures to ensure they are practical, accurate, and user-friendly.
• Develop guidance covering routine operations, alarms, maintenance activities, and emergency response.
Support Training and Knowledge Transfer
• Contribute to the development and delivery of training materials and programmes.
• Share technical expertise and operational best practice across project and operational teams.
• Provide specialist advice and support as a subject matter expert where required.

Champion Safety and Performance
• Promote a positive and balanced safety culture.
• Support assessments that consider the interaction between people, equipment, and processes.
• Identify opportunities to improve safety, reliability, maintainability, and operational efficiency.

Collaborate Across Teams
• Work closely with engineers, project teams, operators, contractors, and other stakeholders.
• Deliver operational readiness activities across a diverse portfolio of projects.
• Complete assigned work packages safely, efficiently, and to the required quality standards.

Who We’re Looking For

You’ll be someone who can look beyond the design stage and understand how systems and facilities will function in the real world.
You’ll bring:
• A strong understanding of operational and maintenance requirements.
• Excellent communication and stakeholder engagement skills.
• The ability to build effective working relationships across multidisciplinary teams.
• A proactive and organised approach to delivering high-quality outcomes.
• Strong technical writing and documentation skills.
• A practical mindset with the ability to balance safety, operational needs, and efficiency.

Essential Qualifications and Experience

You should hold:
• A Level 3 qualification supported by significant relevant experience; or
• Incorporated Engineer (IEng) status; or
• An HND or equivalent Level 5 qualification in a relevant technical discipline.

You will also have:
• Experience working in an operational, engineering, technical, or maintenance environment.
• Experience producing, reviewing, or using technical procedures and documentation.
• Strong problem-solving and communication skills.
• The ability to work effectively as part of a team.

Desirable Experience
• Operational readiness, commissioning, or facility start-up experience.
• Knowledge of human factors, training programmes, operations, or maintenance planning.
• Experience supporting the handover of facilities or systems into operational use.

Please attach evidence of your qualifications when submitting your application for this role.

Please note: As a minimum, SC security clearance is required for these roles with the possibility of DV clearance being required in some areas. The roles are full-time, part-time working is not available.

Why join us?

The success of any new facility depends on more than great engineering. It requires equipment, processes, and people to be fully prepared for safe and effective operation. In this role, you’ll have a direct impact on how new facilities are delivered and operated, helping create safer workplaces, smoother transitions into operation, and long-term improvements in performance. Your work will influence projects that deliver lasting value and ensure operational teams are equipped for success from day one.

If you’re passionate about operational excellence, safety, and making a real difference to how facilities perform, we’d love to hear from you.

At Sellafield Ltd, we are committed to supporting our employees in fulfilling their potential. With 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 10%, 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-anddevelopment/
• 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/

Additional Information

• The closing date for this vacancy is 9th 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. Attaching them at application stage will ensure a smooth process and prevent delays.

• 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