Civil Ports & Maritime Senior/Principal Engineer

About the Role Amentum is seeking a Senior / Principal Ports and Maritime Engineer to join our UK team, supporting the delivery of critical infrastructure within the Defence sector. This role offers a flexible hybrid working model, combining office-based, Glasgow/Edinburgh/Bristol/Reading, some remote, and occasional UK site work. You will be part of our Ports and Maritime capability, working with a multidisciplinary team to deliver engineering solutions across civil, structural, geotechnical, seismic, and maritime disciplines. This role focuses on collaboration and shared problem-solving, where you will contribute your expertise to support high-quality and sustainable project outcomes. You will work closely with colleagues and clients to build strong relationships and support the continued growth of the capability. You will also play an active role in supporting and developing early-career engineers, contributing to an inclusive and supportive environment that encourages learning and knowledge sharing. This is an excellent opportunity to advance your career and contribute to nationally significant programmes within a technically strong and supportive environment. Our projects span the full lifecycle, offering involvement from early concept and feasibility through to detailed design and construction support. You will be responsible for producing and reviewing high-quality technical deliverables, ensuring alignment with relevant standards, client requirements, and best practice, while maintaining a strong focus on quality, safety, and constructability. Applying a pragmatic, solutions-focused approach, you will help resolve complex engineering challenges and ensure projects are delivered safely, efficiently, and to a high standard. You will also support the management of project scope, programme, budget, and resources, working closely with multidisciplinary teams to deliver integrated, efficient, and effective solutions. Here are the Requirements; A Chartered Engineer (ICE or IStructE), with a strong understanding of core engineering principles and their practical application Demonstrable experience in civil and structural design, with the ability to apply British Standards and Eurocodes effectively in practice Proven experience in ports, maritime, or related heavy civil engineering sectors, with the ability to translate technical knowledge into solutions for complex, real-world challenges Well-developed analytical and problem-solving skills, with the ability to apply and guide the use of engineering theory in practical and often complex environments C ommercial awareness, with an understanding of client needs and the wider project context Strong communication and interpersonal skills, with the ability to collaborate effectively and contribute within multidisciplinary teams Experience in managing technical delivery and supporting successful project outcomes across scope, programme, and budget A proactive and organised approach, with the ability to take ownership of tasks, support others, and contribute to overall project and team performance A commitment to health, safety, quality, and continuous improvement, alongside experience in mentoring and supporting the development of others Desirable: Familiarity with industry guidance for maritime infrastructure and load application, such as PIANC and OCIMF Experienced in structural dynamics concepts and their practical application Awareness of, or experience in, the use of Information Management systems Experience in the use or development of finite element structural analysis software, such as or SAP2000 An understanding of geotechnical principles, with experience or exposure to software such as WALLAP and PLAXIS Awareness of NEC3/4 ECC contracts and their application within project delivery environments 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 generous pension contribution, buy sell up to 10 days extra holidays, 9 day fortnight, 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. We partner with VERCIDA, 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. 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 . Compensation Details: GBP The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws. Benefits Overview: Our health and welfare benefits are designed to support you and your priorities. Offerings include: Health, dental, and vision insurance Paid time off and holidays Retirement benefits (including 401(k) matching) Educational reimbursement Parental leave Employee stock purchase plan Tax-saving options Disability and life insurance Pet insurance Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits. Original Posting: 06/16/2026 - Until Filled Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs. 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 .