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NNL Post Doctorate Scheme - Reactor Chemistry Modeller

Job Introduction

NNL Post Doctorate Scheme

NNL have launched a new Post Doctorate Early Careers Scheme which will commence in October 2021. The successful applicant to this role will become part of this new scheme. More details on the NNL Post Doctorate scheme can be found at Post Doctorate | National Nuclear Laboratory (nnl.co.uk)

NNL is where your understanding of reactors fuels the nation. As part of our Fuel Reactor & Reprocessing capability, you’ll play a vital role in developing the UK fuel cycle in line with advances in new technology and new processes. As old reactors reach the end of their lifespan, we need experts like you, with the technical skills to virtually model scenarios that not only enable us to explore new ways of managing the inputs and outputs of reactors, but also pave the way for the implementation of smaller, cleaner revolutionary new reactors. This is a place where you can use your knowledge and expertise to do long term meaningful work for years to come.

NNL is looking for a high calibre, motivated individual to join the Reactor Chemistry and Materials team based in Culham, Oxfordshire.  The team is part of the Fuels, Reactors and Recycling capability within NNL which delivers commercial R&D to help solve a wide range of chemistry and corrosion-based challenges in the nuclear industry and has a long history of successful delivery of work programmes to an exceptional standard. The group supports strategic programmes across the industry, as well as provide advice on strategic UK issues. Much of the work directly supports plant operation, lifetime extension and support to new build programmes. 

You will be involved in investigating, analysing and resolving a range of technical questions relating to operational reactors (worldwide) and the UK’s new build programme including small modular reactor technologies.

You will have a strong scientific background in applied mathematics and chemical engineering/chemistry.
You will have the opportunity to work and interface with national and international organisations.

Role Responsibility

Main Responsibilities for Reactor Chemistry Modeller
Working flexibly as part of a specialist team using and developing reactor chemistry modelling codes and tools to support operational reactor power stations, as well as those going through the design process.
Deliver internal and external customer projects to time, in budget, and to required environmental, health, safety, security and quality (EHSS&Q) standards
Performing modelling work in support of customer work, making use of codes/programmes both within, and external to NNL
Authorship, checking and approval of technical documents (calculations notes/spreadsheets, technical memos, technical reports and open literature journal articles)
Presenting work performed to customers, project meetings and at international conferences
Ad-hoc problem solving to resolve day to day technical challenges that emerge
Engaging with technical experts across NNL, looking to support their work and vice-versa 

The Ideal Candidate

Essential Criteria for Reactor Chemistry Modeller

  • PhD in relevant discipline with strong background in applied mathematics, coding and chemical engineering/chemistry 
  • Experienced in use of coding in C and/or Fortran and/or Mathlab and/or Mathematica
  • Experienced in mathematical programming (mathematical optimisation) 
  • Background knowledge in Physical Chemistry and Chemical Thermodynamics and/or Fluid Mechanics
  • Adept in the preparation of high-quality technical reports
  • Flexible approach to project delivery, and provision of support to both the team and wider organisation where required
  • Carry out designated work packages to meet standards of safety, cost, quality and time.
  • Positive attitude to safety, security and other EHSSQ requirements
  • Ability to work well with multidisciplinary teams across the organisation
  • Ability to work independently
  • Ability to achieve BPSS Clearance


Desirable Criteria for Reactor Chemistry Modeller

  • Working towards Chartered status with relevant institution,
  • Ability to disseminate technical information to non-specialist audiences
  • Peer review of technical reports / data

About the Company

Grounded in robust science and decades of experience, National Nuclear Laboratory (NNL) is the authoritative voice in the UK and beyond for technological development within the nuclear power sector.

Our unparalleled understanding of the science, challenges and opportunities makes us an unrivalled authority and partner in the field, providing experts, technologies, and access to cutting-edge facilities to organisations around the world.

Harnessing potential technologies and translating them into to industry-ready solutions means our pioneering approach spearheads international improvement and technological progress.

We work on projects as small as drilling a hole to analyse underground wastes with our integrated micro drilling technology, or as large as developing state-of-the-art power systems for spacecraft, based on radioactive materials

NNL has a vision for Equality, Diversity and Inclusivity (ED&I) where NNL aims to be an inclusive workplace that attracts diverse talent through transparent and equal policies and procedures. We want you and the diverse mix of people that we employ, customers that we service and stakeholders that we influence to feel valued. We encourage a workplace culture where everyone can thrive with a sense of belonging.

Recruitment Agency Notice

We operate a strict Preferred Supplier List (PSL) for the provision of recruitment services. Only agencies on our PSL may provide CVs and only when the role is released to them by our recruitment team. We will not accept unsolicited CVs from suppliers not currently on our PSL. We explicitly reserve the right to add candidate details from unsolicited CVs from non-PSL agencies into our own candidate database and to pursue/hire such candidate(s) without any obligation, financial or otherwise, to the agency concerned.

National Nuclear Laboratory

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