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.

Internal Communications Manager

Location: Sizewell C Site, Leiston, Suffolk. 3 - 4 days per week on site, with occasional travel to London

Contract: Permanent, full time

Salary: £57,000 to £66,000 per annum, depending on experience, plus bonus and benefits.

Benefits include:

• Up to 5% annual bonus
• 28 days annual leave plus bank holidays, increasing to 30 days after five years
• Defined contribution pension scheme (up to 7.5% employee / up to 15% Sizewell C)
• Access to benefits portal where additional benefits can be purchased including private healthcare, discounted gym memberships, electric scheme, etc
• Opportunity to purchase extra holiday

Closing date: Thursday 1st of October 2026

Please note: We reserve the right to close this vacancy early should we receive a high volume of suitable applications. To avoid disappointment, we encourage interested candidates to submit their application as soon as possible.

The Opportunity

Sizewell C is one of the UK’s most ambitious infrastructure projects, and brilliant communication will be essential to bringing our people with us on the journey.

We’re looking for an outstanding Internal Communications Manager who can turn complex, technical and fast moving information into clear, engaging stories that people understand and act upon.

Working as part of the Site Internal Communications team, you’ll act as a trusted communications partner to leaders, functions and project teams. You’ll help shape and deliver communications covering everything from workforce experience, culture and safety to construction activity, project milestones, operational change and organisational performance.

This is a varied, visible and hands on role for someone who loves finding the story, sharpening the message and creating communications that genuinely connect people to the bigger picture.

Why Join as an Internal Communications Manager?

This is not a role where you’ll simply wait for a finished brief to land.

You’ll be at the heart of a fast paced and constantly evolving project, finding stories, advising stakeholders and shaping communications from the earliest stages. You’ll take complex, technical or sensitive information and turn it into content that is clear, practical and engaging.

Whether you’re communicating an important safety message, supporting a major milestone, helping leaders connect with the workforce or celebrating the people delivering the project, your work will help shape how Sizewell C feels, communicates and operates.

There are two opportunities available, each supporting a broad portfolio of business priorities. One position will have a stronger focus on day to day site communications and delivery, while the other will support wider site operations and corporate priorities, including safety and workforce communications. The portfolios may continue to evolve as the project grows.

What You’ll Be Doing

• Partnering with leaders, project teams, operational functions and subject matter experts to plan and deliver effective communications
• Taking a brief, finding the strongest angle and turning it into a clear and compelling story
• Translating complex, technical, operational or sensitive information into accessible and audience focused content
• Creating communications plans, briefings, presentations, talking points, campaigns and workforce updates
• Supporting communications across safety, wellbeing, culture, construction, logistics, milestones and operational change
• Supporting crisis communications and the communication response to significant incidents, emerging risks and sensitive issues.
• Advising and constructively challenging stakeholders to improve the clarity, timing and impact of communications
• Supporting leadership communications, workforce forums, roadshows, engagement sessions, recognition activity and site visits
• Managing and improving internal channels, including digital platforms, screens, newsletters, briefings and email communications
• Building strong relationships with contractor communications teams and delivery partners to create consistent messaging across the site
• Spotting emerging priorities, risks and communications needs early and responding confidently in a fast moving environment
• Using storytelling to celebrate progress, showcase great work and build pride, connection and belonging across Sizewell C

What We're Looking For

We're looking for a talented communicator who can take complex or incomplete information and turn it into clear, engaging and impactful communications.

You'll bring:

• Experience in internal communications, corporate communications, employee engagement, stakeholder engagement or a similar communications role
• Exceptional writing, editing and storytelling skills, with the ability to adapt your style for different audiences and channels
• Confidence building relationships with and influencing senior stakeholders
•  The ability to work effectively in a fast paced environment where priorities can change and not every detail is immediately available

• The ability to see the bigger picture, connecting local activity and priorities to the wider Sizewell C story and helping build a shared sense of purpose across the project
• A genuinely collaborative approach, with the willingness to lean in, support colleagues and help the whole team succeed.
• Strong planning, organisational and project management skills, with the ability to juggle multiple priorities
• Experience creating communications plans, campaigns and content across a variety of channels
• Sound judgement, attention to detail and a proactive approach to spotting opportunities and solving problems
• The ability to build trusted relationships across teams, functions, contractors and delivery partners

Internal communications experience is preferred, but we're also keen to hear from candidates with backgrounds in external communications, corporate affairs, employee engagement or stakeholder management who can demonstrate excellent writing skills and strong stakeholder engagement.

Experience within infrastructure, construction, energy, government, the public sector or other complex operational environments would be advantageous, as would experience supporting culture, safety, wellbeing, engagement or change initiatives.

A formal communications qualification is welcome but not essential. Most importantly, we're looking for someone with outstanding communication skills, strong stakeholder management capabilities and a genuine passion for helping people understand what matters most.

Ready to Make Every Message Matter?

This is your opportunity to put brilliant communication at the heart of one of Britain’s most exciting infrastructure projects.

Bring your ideas, your judgement and your flair for storytelling, and help thousands of people understand not only what is happening at Sizewell C, but why it matters.

Apply now and help turn the Sizewell C story into communications that inform, inspire and move people to action.

When joining Sizewell C, 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.

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.  

To be appointed to this role, you will need to meet the criteria for Security Vetting, which will, ordinarily, require you to have been a resident of the UK for at least three of the past five years.