About The Opportunity
Amentum is the Design and Engineering partner for Sellafield under the PPP (Programme and Project Partners). This is a 20‑year arrangement to deliver ~£7bn of major projects. We are looking to recruit high‑value expertise from across regulated and comparable sectors to work in a collaborative environment. PPP is delivering major projects, site‑wide improvements and provision of supporting services.
The Role
We are seeking a passionate and strategic Sustainability Lead to join us supporting our clients in creating a cleaner, safer environment for future generations. You’ll be instrumental in embedding sustainable practices across a portfolio of highly complex and critical national infrastructure projects in the nuclear decommissioning industry and adjacent areas. Working across a collaborative delivery ecosystem comprising designers, integrators, civil and process engineering experts, you will drive innovation, culture change and ESG impact, shaping some of the UK’s most important projects.
Here is what you will need
* High level of professional knowledge and skills in sustainable engineering design, building physics, compliance modelling and operational energy assessments
* Demonstrable experience in operational energy and life cycle carbon costing is highly desirable.
* Strong working knowledge of sustainability including best practice benchmarks, reporting, tools and techniques e.g. BREEAM, CEEQUAL, PAS2080
* A commitment to sustainability with a strong sense of purpose and drive to make a positive difference within a sustainable business context
* A track record of effectively collaborating, innovating and driving sustainable outcomes through project design processes
What you will need as a Sustainability Lead
* Degree or equivalent knowledge & experience in Sustainability, Environmental Management, Engineering, or related field.
* Proven experience leading sustainability on major construction or infrastructure projects.
* Strong understanding of UK sustainability legislation, standards (e.g. PAS2080, ISO 14001) and carbon/net zero frameworks.
* Skilled in managing stakeholder engagement and translating complex data into clear, compelling narratives.
* Collaborative and pragmatic approach, seeing the bigger picture while mindful of the stringent regulatory environment we and clients routinely operate in.
* Membership of IEMA, CIOB, ICE, or similar recognised body; working towards or holding Chartership is preferred.
* Experience in the nuclear or other highly regulated industry.
* Experience with or good working knowledge of BREEAM, LEED, WELL, or similar certifications.
* Good knowledge of PAS2080 and experience in its implementation.
* Familiarity with Science‑Based Targets, carbon accounting platforms, or social value measurement frameworks.
Employee Benefits
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.
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.
Seniority level
Mid‑Senior level
Employment type
Full‑time
Job function
Other
Industries
Defense and Space Manufacturing
Equal Opportunity Employer
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low‑income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.
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