Assumptions and Liabilities Modelling Manager

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Assumptions and Liability Modelling Manager - 12 months secondment / maternity cover

Are you looking for an exciting new opportunity within Nuclear Decommissioning? Do you have skills that could help us in developing our long-term liability cost estimates? Do you work well with others and are a highly organised, exceptional communicator? If so, this could be the role for you!

The Opportunity

The Assumptions and Liability Modelling Manager is a key role in the Strategy, Planning and Performance team, leading on development of assumptions and financial modelling that's required as a part of our contractual submissions under the Nuclear Liabilities Funding Agreement (NLFA).

This is a maternity cover / secondment opportunity to lead the work feeding in to Integrated Plan 2026 (produced in late 2025) and into early 2026.

This role is in Nuclear Decommissioning's "Client team", which has responsibility for managing the work required under the NLFA and leading the relationship between ENGL and, principally, the Non-NDA Nuclear Liabilities Assurance team in NDA, who act as the Government's agent.

The Client Team's role is unique in ND and quite distinct from the technical colleagues it works alongside. The team - and this role - has extensive collaboration with internal technical teams and experts, as well as regular external facing engagement with Government (DESNZ) and its representatives. The strength and success of the relationships have significant financial and reputational implications for the ENGL business.

Pay, benefits and culture

We can offer a competitive salary and you'll be appointed based on the parameters outlined in the Nuclear Generation Personal Contract as well as your existing salary, competence, experience and qualifications.

At EDF, everyone's welcome. We strive to create an inclusive and diverse environment where everyone has a voice and where you feel confident being yourself. We're committed to equality, diversity and inclusion. We'd like our future workforce to have an equal gender balance, represent a broad mix of people from minority ethnic backgrounds, LGBTQ+, those with a disability and supporting social mobility. We're a disability confident employer and we'll do all we can to help with your application, making adjustments as you need.

We'll value the difference you bring and offer opportunities for you to thrive and succeed.

What you'll be doing

As part of your role, your responsibilities will include:

• Production and updating of liability assumptions, including:
  • Leading cross-business coordination of inputs for quarterly and annual liability updates
  • Contributing to Governance processes through leading the Liability Impacts Forum (LIF) and Steering Committee meetings, leading coordination of the Liabilities Impact Review Group (LIRG)
  • Leading analysis of modelling output for internal governance and inclusion in contractual submissions (e.g. Integrated Plan, Decommissioning Plan Submissions)
  • Ensuring business familiarity with assumptions, underpinning methodologies, update processes and modelling outputs
  • Leading coordination for suite of financial and operational modelling inputs (WOLF, CAM, CCM, NLCM) to cross-business liability assumptions
  • Developing and updating underpinning assumptions and 'calculators', including associated documentation and processes
  • Leading assumption and model-based assurance engagement with external assurance and audit bodies, ensuring robust adherence to internal governance processes
• Providing liability estimates and analysis to governance forums for business monitoring, control, reporting and analysis of results to support business planning and ENGL accounts
• Managing and directing a team of assumptions leads (including contractor support), tasking and leading team appropriately to secure necessary expertise and inputs across the range of work

Who you are

You will be educated to degree level in a relevant financial, economic, scientific, or commercial discipline.

You will have proven experience in cost modelling and financial analysis, with good attention to detail.

You will have natural leadership skills with the desire to gain management experience.

Strong communication skills are essential in order to explain financial outputs and analysis to non-technical audiences, and present on information, data and forecasts.

You will have experience of sharing information and presenting and discussing results and analytics with senior stakeholders such as regulators, Government representatives, auditors and management.

Strong stakeholder and relationship management skills are essential, as part of the role is leading workshops with a range of stakeholders, including in depth discussions of technical information

You will have excellent time management, project management and organisation skills, with the ability to work independently and to tight deadlines.

You will be an expert in the use of Microsoft office products, particularly Microsoft Excel and Powerpoint

An understanding of technical aspects of nuclear generation with particular focus on defueling, decommissioning and liabilities management would be advantageous.

To be appointed to this role, you will need to meet the criteria for Security Vetting which will, ordinarily, require you to have been a resident of the UK for at least 3 of the last 5 years.

Closing date for applications: Thursday 19th December

Interviews to be held WC 6th January

Join us and together we can help Britain achieve Net Zero

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Contact becky.crawley@edfenergy.com for more information or with any queries.