Job Description

This is a temporary opportunity for 12 months for those that are already band 4A.

The Senior Strategy Advisor – Integrated Waste Management (IWM) provides expert strategic advice, analysis and leadership to support the development, assurance and delivery of Sellafield’s waste management strategy. The role enables robust, evidence‑based decision‑making across the Higher Activity Waste (HAW), Lower Activity Waste (LAW) / Controlled Waste and Effluents portfolios, ensuring alignment with Site Strategy, NDA objectives and regulatory expectations.

The role holder independently leads complex, high‑impact strategic work packages, maintains critical strategy artefacts, and shapes future waste management direction through scenario planning, decision management and stakeholder engagement. Through close collaboration with Senior Strategy Managers, enterprise functions, programmes and external bodies, the role underpins long‑term, integrated and optimised waste management outcomes pending disposal.

Principal Accountabilities

• Lead the development, maintenance and assurance of key IWM strategy information, ensuring coherence across waste streams and alignment to Site Strategy, NDA strategy and regulatory guidance.
• Independently deliver complex strategic assessments, scenario analysis and option studies to support major strategic and investment decisions.
• Provide expert input to Programme Business Cases and strategic implementation approaches related to waste treatment, conditioning, storage, finishing and leading the GDF export scenario.
• Lead and deliver high‑impact work packages within agreed quality, cost and schedule constraints, escalating risks and issues where appropriate.
• Maintain and enhance key IWM artefacts, including wiring diagrams, decision overlays, dashboards and strategic roadmaps.
• Complete defined regulatory and assurance deliverables, including statutory or mandated strategy submissions (CEAR 2.8 requirements: Ongoing Activities During Storage of Unconditioned Higher Activity Wastes at Sellafield: 2026).
• Lead or support the underpinning, structuring and management of key strategic decisions, including use of decision management tools and processes (e.g. decision papers, decision trees and supporting analysis).
• Prepare high‑quality strategy documentation and briefing materials for governance boards, senior leadership, regulators and external stakeholders.
• Support and contribute to strategy governance meetings by shaping agenda content, presenting analysis, and tracking actions through to closure.
• Act as a recognised point of contact and subject matter expert for defined areas of the IWM strategy.
• Build constructive relationships with senior internal stakeholders, enterprise functions, NDA Group colleagues, regulators and external partners.
• Influence and challenge thinking to drive optimal, system‑level waste management outcomes, balancing technical, commercial, regulatory and delivery considerations.
• Develop and maintain breadth and depth of understanding across the full HAW lifecycle and integrated waste management system.
• Support learning from experience (LFE) and the application of good practice across strategic activities.
• Support the development of capability within the Strategy team by sharing knowledge, coaching others where appropriate, and contributing to continuous improvement.
• Generate suitable evidence to support professional development and progression towards chartership or registration with relevant professional bodies where appropriate (e.g. RSC, IChemE, CIWM).

Essential Skills

• Demonstrated experience delivering complex technical and/or strategic work at a level appropriate to Senior Strategy Advisor.
•Strong knowledge of Sellafield Site Strategy and its application to waste management and mission delivery.
• Understanding of integrated waste management systems, SL Portfolio strategies and strategic implementation approaches.
• Proven ability to develop robust underpinning for strategic and tactical decisions, including analysis, assumptions, risks and uncertainties.
• Excellent analytical capability, with experience interpreting complex data and translating it into clear strategic insight.
• Strong written and verbal communication skills, capable of influencing senior stakeholders and clearly articulating complex or challenging messages.
• Ability to think holistically and systemically, recognising interdependencies across facilities, programmes, and the wider enterprise.
• Effective stakeholder management skills across multidisciplinary and organisational boundaries.

Desirable Skills

• Experience in decision management, including formal decision frameworks or specialist tools.
• Experience working with external stakeholders, regulators or government bodies.
• Background within nuclear operations, waste management, portfolio management, strategy, technical or programme environments.
• Experience developing or assuring Programme Business Cases or major investment decisions.
• Degree level qualification or equivalent experience in a relevant scientific, technical or engineering discipline.
• Experience working in politically sensitive or complex change environments.

Additional Information

• Open VN
• Number of Vacancies: 1
• Contact/s: Jenny Tait

This is a temporary opportunity for 12 months for those that are already band 4A.

ASW’s may have the right to apply for internal Sellafield Ltd vacancies. Please note if you are an Agency Supplied Worker you are required to attach evidence of all qualifications obtained to support your application. We require a minimum of A*-C (9-4) GCSE in English Language, Maths & Science/IT or equivalent / higher qualification.

In the event that there is high interest in this position, the hiring manager will hold informal, documented discussions to determine which candidate is best suited to the role, expected to take place on 29th June.

Sellafield Ltd are recognised as a Disability Confident Employer (Level 3). Disability Confident employers offer an interview to disabled applicants that meet the minimum criteria for a vacancy. Sellafield Ltd define the minimum criteria as the ‘essential skills’ which are listed on the vacancy notice. Whilst completing your application form, you will be able to indicate if you wish to be considered under the disability confident scheme. If you would prefer to discuss this directly with us, please contact the GBS Recruitment team on recruitment@sellafieldcloud.co.uk

Please ensure that you save a copy of this advert for future reference if you make an application for this role.

The closing date for this vacancy is 8th June 2026.