Principal Mechanical Engineer

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. For our team in Birchwood Park, Warrington we are seeking a Principal Mechanical Engineer to continue the development of tools to support early retrievals/ operations of the MSSS SEP machines. This role requires an innovative individual with experience within this field. This role will involve managing a small team of designer / engineers to understand the requirements, further specify requirements and to continue the development of bespoke tools, through concepts, trials and manufacture into fully deployable solutions. In addition, the Principal Engineer will act as the single points of contact from initial request through to handover of a fully functional toll to MSSS plant operation teams. To successfully carry out this role, it will be necessary to integrate and manage other groups such the SL Innovation teams, the site wide manufacturing capability and other contractors Requirements Understand the roles and specifications of CDM Experience producing design packages, suitable for manufacture and installation, containing drawings, method statements, risks assessments Familiarity and experience of working and complying with applicable SL practices, standard and engineering guides. HNC/ HND/ Scientific or Engineering Degree 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 .