HMG Engagement Lead; Sizewell C)

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Sizewell C

London (with travel as required)

Salary - £85,000 - £100,000

• Bonus - 10%
• Contributory pension scheme - up to 7.5% employee/15% employer
• Family private medical cover
• Holiday - 28 days plus bank holidays
• Life assurance - 8 x salary

Closing date for applications:
Thursday 17th September 2026

Be at the centre of the relationship between Government and one of the UK's most strategically important infrastructure projects.

Sizewell C is one of the largest and most significant infrastructure investments in the UK. The UK is supporting construction as both a shareholder (44.9%) and debt funder (85%). Government therefore has a critical role in supporting delivery of the power station and helping SZC realise wider benefits, including jobs, skills investment, local economic growth and sector leadership.

Reporting directly to the Chief of Staff, the HMG Engagement Lead will play a pivotal role in shaping and coordinating Sizewell C's engagement with Government, ensuring that Ministers, departments and wider stakeholders have confidence in the project and understand the role Sizewell C plays in delivering national priorities.

This is a rare opportunity for an experienced Government professional to apply their Whitehall experience within a nationally significant infrastructure project at the heart of the UK's energy strategy.

This role sits within the CEO Office and will lead the organisation's Government sponsorship and institutional engagement activity.

• Support ownership of Sizewell C's strategic sponsorship and institutional engagement agenda.
• Develop briefing material and strategic advice for senior executives.
• Coordinate engagement activity across Government departments and key stakeholders.
• Support the organisation's approach to Managing Public Money, Accounting Officer responsibilities and associated Government interfaces.
• Track emerging policy, political and regulatory developments that may impact project delivery.
• Help ensure Government understands how policy can actively support successful delivery of Sizewell
  
  C.
• Coordinate complex and sensitive requests across Government, the CEO Office and corporate functions.
• Build trusted relationships across Whitehall and the wider Government sponsorship landscape.

This is not a traditional stakeholder engagement or public affairs role.

We are looking for someone who understands how Government works from the inside and who can confidently operate within a complex Whitehall environment.

• Experience working within the UK Civil Service, at least Grade 6 or Grade 7 level.
• Experience supporting Government sponsorship, major projects, infrastructure programmes or public accountability arrangements.
• Strong understanding of how policy, delivery and Government priorities interact.
• Experience preparing advice, briefings and recommendations for senior decision-makers.
• Exceptional stakeholder management and influencing skills.
• Strong judgement, political awareness and discretion.
• The ability to navigate complexity, ambiguity and competing priorities.
• Experience working across multiple stakeholders to deliver outcomes in politically sensitive environments

• DESNZ
• HM Treasury
• Cabinet Office
• Infrastructure and Projects Authority
• Major Projects Portfolio programmes
• Nuclear and energy policy
• Government sponsorship teams
• Complex public-private infrastructure organisations

For this role you must have evidence of right to work in the UK.

As a project, we do not discriminate on the grounds of age, gender,…