Principal Physicist

Job Title: Principal Physicist
Location: Seascale, Cumbria + Hybrid Working Arrangement
Compensation: £57, - £75, + Benefits
Role Type: Full time / Permanent 
Role ID: SF

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 a Principal Physicist at the Sellafield Site in Cumbria.

The role
As a Principal Physicist, you’ll have a role that’s out of the ordinary. You will join a team that has unrivalled expertise in Radiometric Characterisation and Nuclear Material Assay that is focussed on providing innovative solutions for our customers across the full nuclear lifecycle. You will provide key technical leadership to solve problems that will help to progress the UK’s decommissioning programme safely and effectively, transforming some of the biggest technical challenges into some of the best solutions. 

Day to day, you’ll provide specialist characterisation advice and consultancy services during the design, operation and decommissioning of nuclear facilities, through the application of a wide range of radiometric techniques such as Gamma Imaging, Gamma Spectrometry and Neutron Counting.

Direct, lead and supervise the work of technical specialists to develop and deliver characterisation strategies to time, quality and budget. Develop and maintain excellent working relations with customers, regulators and internal stakeholders across Cavendish Nuclear. Maintain and promote knowledge of Industry best practice. Ensure the application of the highest standards for health, safety and environment, ethics and behaviours.

This role is full time, 37 hours per week and provides hybrid working arrangements with 2 days in the office/onsite and 3 days working from home.

Essential experience of the Principal Physicist:

Experience in the application of Radiometric techniques. Technical based leadership experience. Experience in mentoring & training. Nuclear experience.

Qualifications for the Principal Physicist:

Science degree (or equivalent qualification) with significant demonstrable experience

Security Clearance
The successful candidate must be able to achieve and maintain Security Clearance (SC) security clearance for this role. Further details are available at

What we offer 

Generous holiday allowance  Matched contribution pension scheme, with life assurance 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 the majority of employees to buy additional leave or to sell up to one working week of annual leave from their annual entitlement ‘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 Opportunity to work on some of the most exciting engineering projects this country has to offer. Opportunities to develop your career

Cavendish Nuclear
As a leader within the UK nuclear industry, Cavendish Nuclear, part of

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