Job Description

Site Sustainability Advisor Lead


Full-time
Shift Work?: No
Career area: Sizewell C
Primary Contractual Location: Sizewell C
Term of Employment: Permanent

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Sizewell C. The power of good for Britain.

Location: Sizewell C. Leiston, Suffolk (5 days a week on site).


Employment type: Permanent full-time/ part-time.


Salary: Competitive, dependent on experience, plus benefits.

Benefits include:

Annual Leave: 28 days per annum, increasing to 30 days after 5 years of service, plus bank holidays. Bonus: Up to 5% annual bonus. Pension Contributions: Defined Contribution Pension Scheme with up to 7.5% employee contribution 15% employer contribution. Flexible Benefits: Additional allowance for a variety of benefits including.

Closing date Tuesday, 18 November 2025.

The Opportunity

Are you looking for a career which is rewarding, at the cutting edge of project development and where you can really make a difference? Come and join our expanding Sizewell C (SZC) team and work on one of the most exciting and largest megaprojects in the UK, whilst being at the forefront of the UK's climate change agenda and energy policy. Following on from the success of Hinkley Point C (HPC), the SZC Project is a nuclear new build project in Suffolk, which has obtained planning approval and Government financing support. The project has started construction and is now seeking private investment. When completed, it will provide dependable electricity to 6 million homes for 60 years, which along with renewables, will support Britain to achieve Net Zero by 2050.

We have a fantastic opportunity for a Site Sustainability Advisor Lead.

The Role

As Site Sustainability Advisor Lead, you will be the primary point of contact for all sustainability matters on the Sizewell C site. You will lead a team of advisors, engage directly with contractors, engineers, and delivery partners, and oversee the implementation of the project's Sustainability Strategy at a ground level.Ensure compliance with regulatory and corporate expectations.


Your work will directly support the delivery of key objectives around carbon reduction, resource efficiency, circular economy principles, biodiversity, and social value. You'll also be instrumental in identifying opportunities for innovation, improving performance through data, and ensuring the project meets both regulatory and corporate expectations.

The Skills

Degree-qualified in Sustainability, Environmental Science, Engineering, or a related field. Significant experience in a senior sustainability role within a major infrastructure or construction environment. Deep knowledge of UK environmental legislation, sustainable construction standards, and reporting frameworks. Proven ability to influence and lead in a complex, multi-stakeholder environment. Experience managing or mentoring a team of professionals. Comfortable working in a dynamic, site-based environment with evolving priorities. Membership of a relevant professional body (e.g. IEMA, CIWEM, ICE) is desirable. Strong data and reporting skills, with experience using digital tools to track and analyse environmental performance. Experience of operating within an environmental management system (EMS) conforming to recognised standards (BS EN ISO14001:2004), including the development of procedures to meet the requirements of the EMS. Experience of PAS 2080:2023 (Carbon Management in Buildings and Infrastructure). Recent experience working in an environment role under Environmental Permitting Regulations. Awareness of the client/contractor relationship and legal responsibilities under the Construction (Design and Management) Regulations 2015.

Why Join Us?

This is a pivotal role in the success of Sizewell C. You'll be joining the project at a critical stage, with the opportunity to grow alongside it. Be part of a team that values innovation, safety, and excel-lence and help deliver a project that will power millions of homes for generations.

Are you ready to take the next step in your career?

Apply now and be part of something extraordinary.

Sizewell C Limited (Sizewell C) is nuclear site licensed company whose business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk. Sizewell C was formerly under the majority ownership of the EDF Group but is currently majority owned by HM Government and operates as an independent company. EDF remains a key shareholder in Sizewell C and the business therefore maintains close links to EDF as a part of its 'nuclear family'.


As a Sizewell C employee, you may wonder why you are contacted by colleagues with an EDF email, or see the EDF logo on portals that you access and/or documentation you receive; this is because we have partnered with EDF for the provision of a number of support services whilst we complete a successful transition out of the EDF group.

Additional Information

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Join the team at Sizewell C. The power of good for Britain.


It's not every day you get the opportunity to shape the working culture of what will be one of Europe's largest construction projects, while also helping Britain to reach its target of Net Zero emissions by 2050. That's one of the reasons Sizewell C will be unlike anything you've ever experienced before, and you'll need to be an exceptional professional to reach the high standards this critical infrastructure project demands.


The UK is experiencing a nuclear renaissance and Sizewell C - along with its sister project at Hinkley Point C in Somerset - is powering the change. We're ramping up at pace as we look ahead to the Financial Investment Decision in early 2025, and the start of construction soon after. With government fully on board and public opinion shifting significantly in favour of nuclear, there's never been a better time to join our project.


By submitting an application to this role, you acknowledge that you have read and understood Sizewell C's employee privacy policy and EDF's employee privacy policy. Just to let you know, EDF will be processing and sharing information about your application on behalf of Sizewell C.