Senior Engineer - Radiation Physics

Senior Engineer - Radiation Physics page is loaded Senior Engineer - Radiation Physicslocations: Derby, UK: Manchester, UK: Warrington, UKtime type: Full timeposted on: Posted Todaytime left to apply: End Date: April 6, 2026 (16 days left to apply)job requisition id: JR100957 Role Title: Senior Engineer - Radiation PhysicsWe are Rolls-Royce SMR and we're doing something that's never been done before. We're revolutionising an industry. That's a once in a career opportunity for those excited by such a challenge. This is more than just a job; this is a legacy.The Performance & Analysis team is the centre of excellence within Rolls Royce SMR for the engineering analysis used to substantiate the performance and safety of the power station. Radiation Physics and Shielding (RP&S) analysis is a core discipline within this team, ensuring that the design meets dose protection, shielding and ALARP requirements for workers, the public and the environment. About the Role: As a Senior Engineer - Radiation Physics, you will lead the delivery of radiation physics and shielding analysis packages for the Rolls Royce SMR power station. You will act as both a technical author and reviewer, ensuring analyses are robust, traceable and of the highest quality. Your work will support design development, radiological zoning, safety justification and ALARP demonstrations across the plant.You will work closely with design, layout and E3S teams to define analysis requirements and scope, ensuring radiation physics inputs support the progressive design and ultimately verify the performance, safety and radiological compliance of the final SMR design. You may supervise small teams or junior engineers, including oversight of supply chain delivered analysis packages.The work is highly varied and includes key areas such as shielding and dose assessments, neutron and gamma transport, flux and fluence generation, DPA assessments, heating calculations, activation studies, radioactive source term generation, decay heat and depletion calculations, support to consequence assessments and equipment qualification.Due to the safety critical nature of the modelling, excellent quality management processes, automation and code verification/validation are essential. You will help develop robust and repeatable analysis workflows using Python and high performance computing resources.This role requires effective collaboration and communication with teams across engineering and non engineering disciplines, supporting an evolving design programme and helping define analysis requirements and communicate results clearly. We'll Need You To: Lead radiation physics and shielding analysis work packages for the RR SMR plant Produce and review complex RP&S analyses to a high technical and quality standard Define and scope analysis requirements that support design development and safety case needs Perform shielding and dose rate assessments, flux/fluence calculations, neutron activation, decay heat and depletion modelling Support source term generation, manipulation and decay chain modelling Develop automated and robust analysis workflows, including Python based scripts and HPC utilisation Support verification, validation and uncertainty quantification of analysis codes and methods Collaborate with design, layout, E3S and safety teams to integrate radiation physics requirements into plant design Contribute to radiological consequence assessments, ALARP studies and equipment qualification activities Provide technical leadership, mentoring and supervision to junior colleagues Support interactions with supply chain partners delivering RP&S analysis Communicate analysis results clearly and effectively, both verbally and through technical reports Key Skills Required: We know there's no such thing as the 'perfect' candidate. If you meet around 75% of the criteria below, we'd love to hear from you: Strong academic background with an MSc (or equivalent) in Nuclear Engineering, Nuclear Reactor Physics or a related discipline Strong understanding of radiation transport and radiation physics principles Experience applying structured, methodological approaches to high assurance analysis Experience with radiation physics and shielding codes (e.g. MCNP, Attila/Attila4MC, SCALE) Experience with pre processing (e.g. SpaceClaim) and post processing (e.g. Tecplot, Python) Experience developing analysis methods, models and tools, including uncertainty quantification Understanding of quality assurance processes, verification and validation of analytical models Knowledge of fluids/process/power generation plant in safety critical industries (nuclear, defence, oil & gas, aerospace) Understanding of PWR design, reactor behaviour and safety case use of radiation physics (desirable) Understanding of ALARP/ALARA and BAT principles and how RP&S supports radiation protection Ability to deliver analysis tasks to time, cost and quality Strong technical communication skills and ability to explain complex analysis clearly Experience technically leading teams to deliver analysis programmes Degree-qualified in relevant physics/engineering discipline; MSc and working towards Chartered status advantageous Location: Hybrid working with one of the following as your primary site: Derby, Manchester or Warrington. Salary and Package: The salary band for this will be between £50,650 - £66,500 dependent on the skills, values and knowledge you bring. There may be some flexibility with the starting salary in exceptional cases, and, in due course, the role may be developed further.Benefits include: Bonus - Performance related target opportunity 12.5% Benefits Allowance - £2,200 per annum for a bespoke package Pension - 12% employer and 6% employee contributions Holidays - 28 days (+ public holidays) with ability to buy or sell up to 4 days Private Medical Insurance - BUPA single cover Life Assurance - 6 pensionable pay Home Office Support - £250 one off payment for new startersYou'll be joining a forward thinking organisation that values transparency, fairness and innovation. We offer a flexible, inclusive and supportive working environment, opportunities for career growth in a rapidly scaling business, and a culture that values diversity, collaboration and continuous learning. Selection Process: The closing date for this role is 6 th April 2026 . The process will begin with an introductory call with the Talent Acquisition Partner, with interviews being able to take place straight away.You'll be joining a forward-thinking organisation that values transparency, fairness, and innovation. We offer:• A flexible, inclusive, and supportive working environment. • Opportunities for career growth in a rapidly scaling business. • A culture that values diversity, innovation, and continuous learning.We are an equal opportunities employer and welcome applications from all backgrounds. Inclusivity is important to us, and as a Disability Confident organisation, we are committed to fair, supportive, and continually improving recruitment practices that ensure everyone has the opportunity to thrive.Confidence can sometimes hold us back from applying for a job. But we'll let you in on a secret: there's no such thing as a 'perfect' candidate. If you feel you meet 75% of the requirements for this role, we would love to hear from you.Also, if you are considering a career move or a sector-jump, please get in touch - we welcome applications from people with transferable skills. Our Application Process Due to the safety regulations within the nuclear industry, applicants will be required to participate in additional screening. These are:• Obtaining Baseline Personnel Security Standard (BPSS) clearance • Satisfactory completion of a Disclosure and