Strategy Manager in London

Company Overview

Sizewell C's business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk. Overall, whilst the Company is in the construction phase, the Boards' principal focus is on the development and construction of Sizewell C on time, on budget and to the highest quality and safety standards. Sizewell C is economically regulated by OFGEM under the RAB model similar to other UK electricity distribution networks and Thames Tideway. Sizewell C construction strategy is to replicate the design of Hinkley Point C, using the majority of the same supply chain, but innovating in the way it is delivered to achieve savings in time and cost of around 20%. The CCO will need to be guided by and incorporate lessons learned from the Hinkley Point C commercial delivery to achieve Sizewell C's ambition.

Location: London, Ipswich, Leiston or Manchester (2-3 days a week in the office) with occasional travel required.

Salary: £66,866 to £72,870 plus bonus up to 5% plus extensive benefits including 28 days annual leave plus bank holidays, opportunity to purchase extra holiday, contributory pension scheme up to 7.5% employee / up to 15% Sizewell C, opportunity to purchase further benefits such as private health care, electric car scheme, etc.

Contract Type: Full time, permanent.

Closing Date: 15th of June 2026.

Why join Sizewell C

Sizewell C is one of the UK's most significant infrastructure and clean energy projects. Joining the business means being part of an organisation that is helping shape the future of low carbon energy in the UK while working at real scale and complexity. You will join a business that is growing and maturing, giving you the chance to make a real contribution to how the organisation develops, plans and delivers. This is an opportunity to work closely with senior leaders and contribute to decisions that matter across a nationally important programme.

Strategy Manager – The Opportunity

Sizewell C is looking for a Strategy Manager to join the Strategy and Business Performance team, reporting to the Head of Corporate Strategy. This is a key role in a broader team, where you will help shape strategic direction, drive planning activity and lead important cross‑functional initiatives across the organisation.

Responsibilities:

• Lead the review of internal and external factors that impact Sizewell C's strategic direction and provide clear recommendations to the team.
• Own and drive the annual strategic planning cycle end to end, embedding effective strategic processes, tools and ways of working.
• Drive cross‑functional business planning and support functions to build plans aligned to company strategy.
• Provide strategic input into the development of the 3‑year budget with Finance and support the refinement of strategic KPIs.
• Play a key role in planning and delivering Executive and Board strategy sessions.
• Deliver strategic projects end to end, from defining the scope through to driving delivery and outcomes.
• Track and report on implementation and performance across the organisation, including benefits management and outcomes.
• Build strong relationships across the business and influence stakeholders at all levels.
• Develop clear strategic narratives, papers and presentations for senior audiences.

Qualifications:

• Strong experience in a strategy role, either in house or in consultancy.
• Minimum of 2 years as a Strategy Manager, or at least 3 years as a Senior Strategy Analyst with highly relevant experience.
• Exceptional motivation, independence and strong problem‑solving skills.
• Proven ability to understand and drive the strategy planning cycle effectively.
• Delivered full end‑to‑end strategy work.
• Strong business planning, strategy development and implementation experience.
• Excellent stakeholder management and strong written and verbal communication skills.
• Ability to think end‑to‑end, work autonomously and move things forward under one’s own initiative.
• Strong PowerPoint and Excel skills. Power BI beneficial but not essential.
• Must pass Security Vetting; requirement to have been a resident of the UK for at least three of the past five years.

EEO and Diversity

At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work. It is a requirement that those who join us have the right to work in the UK. Whilst sponsorship may be a possibility that we can explore, we are fully committed to local recruitment where possible, and those already holding the right to work in the UK.