Instrument Assistant

Job Title: Instrument Assistant

Location: Sellafield, Cumbria

Compensation: Attractive Salary + Benefits

Role Type: Full time / Permanent

Role ID: SF66444

At Cavendish Nuclear we’re working to create a safe and secure world, together, and if you join us, you can play your part as an Instrument Assistant, at our Sellafield, Cumbria site.

The role

As an Instrument Assistant, you’ll have a role that’s out of the ordinary. You will play a hands-on role in supporting the repair, maintenance, and calibration of radiation protection instruments—helping to ensure safety and precision in critical environments.

Day-to-day, you’ll

• Ensure safe working practices in line with safety, quality, environmental, and site requirements.
• Carry out practical tasks including Positron Emission Tomography (PET) lead manufacture/repair, detector screening, pressure system maintenance, and workshop housekeeping.
• Support operations and maintenance activities across workshops and radiological controlled areas, including safe handling of radioactive sources.
• Work independently and proactively within provided instructions to complete tasks efficiently.
• Identify and implement service improvements, and confidently use basic hand tools.

This role is full time, 37 hours per week, and is based on site at Sellafield, Cumbria.

Essential experience of the Instrument Assistant:

• Demonstrated experience working within structured industrial health and safety management systems, ensuring compliance with established protocols and promoting a safe working environment.

Qualifications for the Instrument Assistant:

• Minimum of GCSE-level education (or equivalent), demonstrating strong foundational skills in English, mathematics, and science.
• Full, valid United Kingdom driving licence required for travel between sites and operational locations.

Security Clearance

The successful candidate must be able to achieve and maintain Standard (BPSS) security clearance for this role. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk)

What we offer

• Generous holiday allowance
• Matched contribution pension scheme, with life assurance
• Access to a Digital GP, annual health check, and nutritional consultations through Aviva DigiCare+
• Employee share scheme
• Employee shopping savings portal
• Payment of Professional Fees
• Reservists in the armed forces receive 10-days special paid leave
• Holiday Trading is a benefit that allows UK Cavendish employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement. This Window opens February through to March annually.
• ‘Be Kind Day’ enables employees to take one working day's paid leave a year (or equivalent hours) to undertake volunteering work with their chosen organisation or registered charity
• Excellent development opportunities and benefits package including an employee assistance programme supporting physical, mental and financial wellbeing.

Cavendish Nuclear

As a leader within the UK nuclear industry, Cavendish Nuclear, part of Babcock International Group, provides a comprehensive range of critical nuclear solutions in clean energy, defence and civil new build and decommissioning projects. Together, we’re innovating to make nuclear safer, faster and cost-effective across the nuclear energy life cycle. Your career with us could take you anywhere within Babcock International Group – from Canada, the USA to Japan. Work with us to create a safe and secure world, together.

We are a disability confident committed employer. If you have a disability or need any reasonable adjustments during the application and selection stages, please email careers@babcockinternational.com with the subject header ‘Reasonable adjustments requirement’. We’re committed to building an inclusive culture where everyone’s free to thrive. We are happy to talk about flexible working – please ask about alternative patterns of work at interview.

Closing date: 19/08/2025

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