Environmental & Sustainability Manager

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. We offer an exciting range of opportunities to develop your career within a supportive and diverse 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.Provide leadership in environmental and sustainability performance for Sizewell C (SZC), ensuring full compliance with environmental permits, licences, and commitments across a nationally significant nuclear construction project. Lead the site-based Environment & Sustainability team and act as the main interface with regulators, contractors, and SZC project leaders.Sizewell C is constructing a major nuclear power station in Suffolk. The role supports compliance through construction, installation, commissioning, and handover to operations. The project operates under strict environmental frameworks (DCO, permits, licences) and is subject to high public and regulatory scrutiny.The role oversees a multidisciplinary E&S team (10 people), influences Tier 1 contractors, and manages environmental monitoring budgets.Key ResponsibilitiesProvide clear leadership to E&S teams and Tier 1 contractors.Ensure full compliance with environmental permits, licences, consents, and ISO 14001.Oversee site inspections, surveillance, and performance monitoring.Ensure significant environmental aspects are identified, managed, and mitigated.Drive environmental and sustainability performance across SZC and supply chain.Promote world‑class environmental behaviours and best practice.Lead environmental investigations and implement performance improvements.Act as primary interface with environmental regulators (e.g., Environment Agency).Build strong working relationships with internal teams, contractors, and public bodies.Provide a professional service on all environmental and regulatory matters.Ensure department processes, resourcing, and quality standards meet SZC requirements.Support delivery teams across pre‑construction, construction, and commissioning phases.Embed lessons learned and support the One Team culture with Tier 1 contractors.Here's What You'll Need:Extensive experience leading E&S teams on major, highly regulated construction projects.Strong understanding of environmental permits, licences, and compliance arrangements.Broad construction knowledge (civils mechanical electrical commissioning).Understanding of sustainability opportunities and constraints on major projects.Degree in Environmental discipline.Extensive client & principal contractor experience managing environmental issues on large infrastructure or engineering projects.Experience working with regulators and managing regulatory commitments.Experience implementing management systems and environmental controls.Experience driving sustainability initiatives.Our CultureOur values stand on a foundation of safety, integrity, inclusion and diversity. We aim to embed inclusion in everything we do. We know that if we are inclusive, we’re more connected, and we’re more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. This is reflected in our wide range of Global Employee Networks.We partner with VERCIDA to help us attract and retain diverse talent. For greater online accessibility, please visit 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.amentum#SZCSummaryLocation: UK-LeistonType: Full time