Role description

Thomas Thor are working in partnership with Morson Talent and Rolls-Royce SMR (Small Modular Reactor) to recruit a Thermal Hydraulic Expert Technical Lead to join their team in Derby or Warrington, who will be responsible for the delivery of validation code case for the plant performance method as applied to underpin the SMR reactor plant design and safety case.

The Company

Rolls-Royce SMR is a start-up joint special purpose vehicle (SPV) business, specifically created to design, construct and deliver a new fleet of Small Modular Reactors power plants that will be a critical and strategic player in the race to Net Zero carbon emissions globally. Spun out of Rolls-Royce with its pedigree in engineering excellence but also attracting world class inward investment this is an exciting new business with an optimistic opportunity to be a global player in the coming years. Their Intellectual Property and resource expertise has grown from an organization that has already designed and delivered over 35 nuclear reactors for use in the UK’s Royal Navy Submarine program. That’s combined with the knowledge and unique aerospace experience of manufacturing expertise, supply chain management and logistics.

SMR is an integrated power station, that takes well understood, existing nuclear technology and applies a factory-based philosophy to its fabrication and assembly to provide clean, affordable energy for all. Just one SMR can power one million homes for sixty years!

The role

The technical lead will work alongside the plant performance analysis team to understand the nature of the reactor plant behaviour and the associated thermal hydraulic analysis methods. The role will involve leading the process of phenomena identification and ranking for reactor plant behaviour analyses (RELAP), collaborating with the development team to identify test requirements and inform rig design requirements, acting as technical authority for the production of the validation case, and leading engagement with external bodies on the validity of the method in all its applications.

The successful candidate will lead and coordinate all technical activities required to inform a staged approach to validation of the RELAP method. Supported by resource across the Reactor Performance Department, they will be required to identify and assess experimental results from globally available test sources, act as test sponsor for the relevant SMR thermal hydraulic rig programmes, coordinate uncertainty quantification analyses, and identify code limitations and modelling guidelines.

Key Responsibilities

  • Work with the plant design engineers and performance analysis teams to understand the technical nature of the reactor plant as well as the evidence required to validate the analysis methods.
  • Work with the rig design teams to identify smart experimental requirement and influence technical direction of the rigs programme. Act as test sponsor for the thermal hydraulic rigs required to validate the RELAP performance method.
  • Develop and deliver detailed plans for the assigned technical discipline. Prioritise activities in accordance with requirements and constraints flowed down from the project.
  • Define and manage requirement traceability from the analysis through the RELAP validation code case and into the rigs programme.
  • Work alongside the plant performance team to ensure appropriate method validation is in place at each analysis stage.
  • Act as technical authority for RELAP validation both internal and external to the company.
  • Understand and articulate technical and programme risks, managing them as appropriate with the Reactor Performance Validation Lead.
  • Work with due regard to Health, Safety and Environment. Comply with corporate, business and legislative requirements. Champion company values, including Diversity, Equity and Inclusion.

Qualifications & Experience

  • Qualified to degree level or equivalent in Physics, Engineering or a related discipline.
  • Chartered with a relevant professional institute (or equivalent professional accreditation).
  • Experience in delivering and leading complex thermal hydraulic validation cases.


  • Nuclear industry experience
  • Excellent knowledge of reactor plant thermal and hydraulic behaviour and associated analysis approaches.
  • Previous experience in leading technical teams

Their commitment to inclusion

Central to their operations is the creation of an inclusive workplace with a colleague community that is representative of the diverse regions in which we operate. They are committed to equality of opportunity for all employees and applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief, and marriage and civil partnerships.

6+ years’ experience in international technical recruitment. Enjoy working on senior level technical roles that prove challenging to fill. Specialized in the nuclear industry – new build projects, having a particular interest in advanced nuclear technology. Focused on building strong relationships with candidates and clients to ensure a positive candidate experience and effective account management.

Daria Farcas