Role Title: Simulation Engineer We 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 for the engineering analysis used to substantiate the performance and safety of the power station. As part of this, we are developing whole‑plant Engineering Simulators to support end‑to‑end design, analysis, verification and validation. Simulation Assisted Engineering is a fundamental part of our strategy, supporting engineering development across all plant systems and disciplines. About the Role: As a Simulation Engineer, you will contribute to the development, verification and validation of software simulation models of nuclear power plant and control & instrumentation (C&I) systems. You will build high‑fidelity dynamic models using appropriate modelling platforms, ensuring that models are robust, validated and integrated within the wider simulation architecture. You will support the integration of these models into hardware‑based simulation environments and contribute to defining the processes, tools and facilities that underpin simulation capability across RR‑SMR. The models and environments you develop will be used across the full project lifecycle—including analysis, design verification, safety assessment, operator training and system validation. You will be part of a growing Specialist Simulation Development Team and may lead integrated project teams for specific simulation activities. We’ll Need You To: Develop and quality‑assure dynamic models of plant systems and C&I systems Contribute to the development and adoption of Simulator Assisted Engineering methods Manage source code and enforce version‑control strategies across simulation workstreams (Git, Azure Repos) Support integration of simulation models into both software and hardware simulation environments Work closely with analysis developers, plant system owners and other stakeholders to ensure effective model integration Contribute to simulation environment development, including tools, policies, procedures and model governance Support definition and development of hardware‑in‑the‑loop simulation facilities Promote an agile DevOps culture across the Simulation Development Team Key Skills Required: We know there is no such thing as the ‘perfect’ candidate. If you meet around 75% of the criteria below, we’d love to hear from you: Experience with systems engineering fundamentals including concept generation, decision‑making, requirements management and handling complex datasets Experience working in an agile software development environment Experience in dynamic modelling (e.g., MATLAB/Simulink or similar platforms) Experience with common programming languages and software development practices Experience with software and hardware integration, including software‑in‑the‑loop and hardware‑in‑the‑loop environments Understanding of control systems design and verification Experience with modelling or simulation tools such as GSE SimExec, RELAP or JADE Suite (advantageous but not essential) Understanding of nuclear or other high‑integrity industry standards (IEC 61508/61513, ASME NQA‑1, ANSI/ANS‑10.7, ISO 9001 etc. beneficial) Experience working collaboratively with diverse functions, suppliers or partner organisations Ability to communicate complex technical information clearly and effectively Degree in Computational Science, Physics, Engineering, Mathematics or a similar discipline We welcome applicants from a range of high‑integrity sectors including nuclear, aerospace, defence, energy, modelling and simulation environments. Location: Hybrid working with one of the following as your primary site: Derby, Manchester or Warrington Salary and Package: The salary band for this role will be between £42,000 – £55,150 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 starters 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 and a culture that values diversity, collaboration and continuous learning. Selection Process: The closing date for this role is 20th April 2026. The process will begin with an introductory call with the Talent Acquisition Partner, with interviews being able to take place straight away. Why Join Us? 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 Barring Service (DBS) check • Satisfactory completion of a basic financial probity check LI-CE1 LI-Hybrid WeAreSMR destinationnuclear