At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and sustainability. If you're passionate about making a real impact and want to be part of a community that values ethical excellence, this is the place where your ambition can thrive.

Here, we believe that success comes from continuously pushing boundaries and working together to deliver on our promises. We embrace challenges with confidence and are dedicated to creating a secure and vibrant future for all.

We’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow.  We offer an exciting range of opportunities to develop your career within a supportive team who always strive to do the right thing for our people, clients and communities.

People are our greatest asset, and we offer a competitive package to retain and attract the best talent. In addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. Work-life balance and flexibility is a key focus area for us. We’re happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.

The Opportunity

The Decommissioning Alliance (TDA) is a strategic partnership, operating within the DNWP framework and delivering critical decommissioning work at Sellafield, including the UK’s most challenging Legacy Ponds facilities.

As a key partner within DNWP, TDA contributes to Sellafield Ltd.’s mission while ensuring communities, supply chains, and stakeholders benefit from meaningful, measurable Social Value outcomes.

TDA now have an exciting opportunity for a Communications Support Officer who develop and deliver high-quality internal and external communications that support programme priorities, build trust with stakeholders, and strengthen TDA's reputation. The Communications Support Officer will work closely with programme leadership and functional teams to translate complex technical, operational and strategic information into clear, accessible and engaging communications for a range of audiences.

As a Communications Support Officer your responsibilities could include:

• Developing and implement communication plans aligned to programme priorities, key milestones, leadership messages and wider strategic objectives. 

• Supporting constructive engagement with internal and external stakeholders, including client teams, regulators, suppliers, partners, local communities and other key audiences as appropriate. 

• Producing high-quality written, digital and visual content across channels, including briefings, newsletters, leadership messages, intranet content, social media copy and presentation materials. 

• Ensuring messaging is accurate, consistent and aligned with TDA brand standards, while protecting the reputation of TDA, its parent companies and its clients. 

• Translating technical and programme information into plain English that informs, reassures and builds understanding without creating alarm or ambiguity. 

• Managing priority communication channels such as newsletters, LinkedIn and internal briefing materials, measuring effectiveness and improving reach and engagement over time. 

• Contributing to clear communication protocols for issues, incidents and emerging risks, balancing pace, accuracy, governance and stakeholder expectations.

As a Communications Support Officer you will already have:

• Bachelor's degree in Communications, Marketing, Public Relations or a related discipline, or equivalent relevant experience.

• Strong interpersonal skills with the ability to build trusted relationships and work effectively across teams, functions and stakeholder groups.

• The ability to remain calm, organised and effective in a fast-paced environment, including during sensitive or high-profile situations.

• Experience using AI, digital communication tools, social media platforms and Adobe Creative Suite and equivalent applications.

• A high standard of accuracy, discretion and judgement, with a strong understanding of the importance of governance, reputation and message consistency.

• Experience supporting communications for long-term programmes involving safety, risk, remediation or major project delivery.

Our Culture
Our values are built on a strong foundation of safety, integrity, and respect for every individual. People are at the heart of our mission, and we believe in supporting one another through a culture of care and collaboration.

We strive to create a workplace where everyone feels they belong and can thrive. Supporting mental wellbeing and fostering a sense of connection are essential to how we work.

When we embrace different perspectives and work together, we become more innovative, more agile, and more successful. We partner with VERCIDA, for greater online accessibility please visit www.vercida.com to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role.

If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team.