Job Description Reactor Plant Performance Engineers - Submarines Full Time Cardiff, site-based An exciting opportunity has arisen for a Reactor Plant Performance Engineers to join our Submarines business in Cardiff. In this role, you will be analysing reactor performance for existing and new designs under normal, abnormal and accident scenarios and developing a broad understanding of reactor plant operation and protection systems. This is an outstanding opportunity to work at the forefront of reactor plant performance analysis. Due to the sensitive nature of our work, this role will be based permanently at our offices in Cardiff. There is an opportunity for occasional business travel to our waterfront locations in Plymouth, Faslane and Barrow-In-Furness to support the Tests & Trials section. Why Rolls-Royce? We’re a leader in propulsion system design and development for the Royal Navy’s nuclear submarine fleet and the sole provider and technical authority. Join us and we’ll provide an environment where you can be yourself. An inclusive, digital-first culture that invests in you, gives you a platform for continuous learning, and access to an incredible breadth and depth of opportunities to grow your career. Our Submarines business is responsible for the design, manufacture, supply and through-life support of nuclear propulsion-related products and systems in support of the Royal Navy's submarine fleet. You can find out more about the amazing projects that we are working on here:- https://youtu.be/x19YSPecrf8 What we offer: We offer excellent development, a competitive s andrew.fleetwoodrolls-royce.com alary and exceptional benefits. These include bonus, employee support assistance and employee discounts. What you will be doing: You will carry out out fluid flow and heat transfer analysis to support robust design evaluation of the Nuclear Steam Raising Plant. You will also: Use a combination of commercial and in-house developed codes and methods, to assess primary systems and their components to determine the consequences of a variety of normal operation and accident scenarios. Define the pressure and temperature transient profiles for the life of the submarine on existing and future plant designs. Perform development, verification and validation of models used in the analysis of the nuclear plant. Who we’re looking for: Being a part of Rolls-Royce you’ll know we put safety first, do the right thing, keep it simple and make a difference. These principles form our behaviours. They are an essential component of our assessment process and are fundamental qualities that we seek for all roles. Be qualified to degree level or equivalent in STEM-related subjects, ideally with thermo-fluids experience. Have a good understanding of fundamental engineering principles and processes and a solid understanding of the principles of fluid dynamics and heat transfer. Be able to provide clear, concise and accurate technical requirements in written and verbal form. Have excellent communication skills and be highly driven, striving to maintain excellent delivery performance. Experience of simulating reactor coolant systems using industry-standard codes (such as RELAP5-3D, COBRA, TRACE, NLOOP ) is desirable, but not mandatory. For all the candidates applying for this role; We kindly request you to attach your cover letter answering the following questions: (please note that we will not be able to consider your application without the cover letter) Why ( based on your technical experience / skills in thermo-fluids /thermo-dynamics /fluid mechanics ) have you chosen to apply for this role? How can you apply this experience and knowledge to the challenges and example analyses listed in the job application? Please be aware that the priority will be given to employees identified as being at high risk. The professional level and the salary of the position will be dependent on the skills and experience of the successful candidate. It is advised that you inform your current manager of your application for this role. We are an equal opportunities employer. We’re committed to developing a diverse workforce and an inclusive working environment. We believe that people from different backgrounds and cultures give us different perspectives which are crucial to innovation and problem solving. We believe the more diverse perspectives we have, the more successful we’ll be. By building a culture of caring and belonging, we give everyone who works here the opportunity to realise their full potential. You can learn more about our global Inclusion strategy at Our people | Rolls-Royce To work for the Rolls-Royce Submarines business an individual has to hold a Security Check clearance. Rolls-Royce will support the application for Security Clearance if you do not currently already have this in place. Due to the nature of work the business conducts and the protection of certain assets we can only progress applications from individuals who are a UK national or, in MoD approved cases, a dual national. Grade NGS 7-10 For further information please contact: Norbert Ferto - norbert.fertorolls-royce.com Job Category Mechanical Systems Posting Date 05 Feb 2025; 00:02 Posting End Date 01 Mar 2025