Environmental Sustainability Manager

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.

The Company is maturing to meet all these requirements.

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.

Following Financial Completion and Revenue Commencement, Sizewell C is fully funded and is owned by;
The Secretary of State for Energy Security and Net Zero representing HM Government, La Caisse, Centrica, EDF and Amber Infrastructure.

Location: Suffolk, London, Bristol or Manchester (3 days a week minimum in the office)

Contract Type: Permanent, Full Time

Travel: Regular travel to Sizewell C offices including Suffolk and London (typically monthly), plus occasional travel between Bristol and Manchester offices

Salary: From £85,000 + Bonus + Benefits including;

• Bonus up to 10%
• 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)
• Private medical insurance
• Life assurance
• Employee assistance programme
• Flexible benefits package, opportunity to purchase extra benefits including discounted gym memberships, electric car schemes, etc

Closing Date: Monday the 12th of October 2026

Reporting to the Sustainability Director, the Environmental Sustainability Manager, will be a key member of the Sustainability Leadership Team, leading the development and delivery of Sizewell C's Environmental Sustainability strategy and driving sustainability performance across the project.

We're looking for a proven sustainability leader who can bring people together, influence at all levels of the business, and translate ambitious sustainability goals into practical, measurable results.

You’ll provide strategic leadership and deep technical expertise across multiple sustainability disciplines including carbon, circular economy, water, responsible sourcing, and BREEAM Infrastructure certification. You’ll also play a critical role in shaping business decisions, influencing senior stakeholders and Board-level leaders, and ensuring sustainability remains embedded across every aspect of the project.

This role offers the opportunity to:

• Lead and develop a growing team of environmental sustainability professionals
• Shape the sustainability strategy of one of the UK's most significant infrastructure projects
• Influence senior leaders, executive stakeholders and external regulators
• Drive real-world sustainability outcomes at a nationally important scale
• Own and lead key sustainability programmes from concept through to delivery
• Help deliver industry-leading performance across carbon, circular economy, water, responsible sourcing, and BREEAM Infrastructure certification
• Play a visible leadership role within a highly collaborative and values-driven sustainability function

If you're looking for a position where you can combine strategic leadership, technical excellence and meaningful impact, this is an exceptional…