Principal Electrical 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.

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.

About the Opportunity

Amentum are currently recruiting for a Principal Electrical Engineer to join our Energy business, which is entering an exciting phase of opportunity: supporting a key client’s UK nuclear fleet through a business transformation; supporting new small and advanced modular reactor developers. Our work is varied, covering nuclear projects (Licensing, New Build, Generation, Life Extension, and Defueling), Renewable Energy projects and high energy industrial projects, such as data centres and hydrogen production facilities. In addition, we have opportunities across the wider business to help us to keep work interesting as you develop your career with us. We’re looking for a driven individual who embraces collaboration and diversity, and who shares our vision to create a secure and vibrant future by continuously reinventing, realising breakthroughs and taking on challenges with courage. Our goal is to support development of new nuclear technologies and to keep existing power stations operating safely, contributing to the UK’s Net Zero carbon target. And this is where you come in.

Your role will be to support and deliver Electrical engineering solutions to time, cost and quality on projects of varying sizes. If you’re familiar with project delivery, you’ll know that they have lots of moving parts and complexity, which is why you’ll be working alongside our Principal Engineers, Engineering Managers and Operations Managers to enable delivery of maximum value.

People are at the heart of everything we do. Central to the success of the role will be your people skills, building effective relationships and interacting with multiple internal and external stakeholders in multiple locations. You’ll also work closely with colleagues to support activities that offer the best service to the client. Through your interactions, you’ll be able to gather useful intelligence on client needs and work with the team to deliver innovative solutions. You’ll utilise your strong communication and engagement skills to achieve client, people and business outcomes, working with your team and peers that are based in different locations across the UK. We’re continuously evolving and growing the business, so there’s plenty of opportunity to evolve and grow your skills and career too. This role will be based at one of our Energy offices (Newcastle, Warrington, Gloucester, Bristol or Knutsford). We put flexibility at the heart of what we do and we’re happy to consider flexible working patterns.

Key responsibilities

• Open to people looking for full time and part time roles for 3 year projects
• Hybrid working, with some time based in Manchester and Liverpool, and potential travel to the US
• Demonstrates safety culture
• Experience in the UK
• Generic Design Assessment (GDA) and or Nuclear Site Licensing phases as a workstream lead or senior SME
• Proficient at chairing level 4 meetings / interfacing with nuclear regulators, working within RNIP
• Covered safety, security, environmental substantiation of electrical equipment design, both safety and non-safety related designs, reactor island, turbine and balance of plant, as well as associated development, covering designs and modifications
• Challenging ALARP assessments, and experience with graded approach to QA
• Good understanding of requirements capture and management
• Demonstrated experience in addressing 60Hz designs in a 50Hz market (and vice versa); developing strategies, plans and designs to cover transition, from concept to detailed design
• Has addressed adherence to and derogation from Grid Code of generating plant
• Delivery of equipment qualification
• Experience with a wide range of electrical codes and standards
• Experience with interface with Instrumentation and Control, Delivery of Intelligent Customer core capability

Qualifications, Skills & Experience

• MEng, MSc, BEng or BSc or equivalent in EC&I or another relevant discipline
• Chartered Engineer status with a relevant professional body.
• Previous team leadership, line management, technical lead or Responsible Engineer experience
• Extensive experience in EC&I design and leadership within the nuclear sector or highly regulated environments
• Deep knowledge of nuclear safety, regulation, and quality assurance processes
• Knowledge or EC&I principals, design tools and relevant guidelines, standards and practices (e.g., BS, IEC, IEEE – in particular IEC 61508, 61511, 61513, 61226 and ONR SAPs / TAGS)
• Knowledge and experience in the systematic design lifecycle of a C&I system; including specification, design, assessment, verification, testing, installation, commissioning and maintenance of safety or process critical I&C Systems
• Knowledge of high integrity hardware or software-based control systems for industrial equipment
• Knowledge of systems engineering and system conceptual design is desirable
• Demonstrated ability to lead multidisciplinary engineering teams and manage complex technical risks
• Experience in shaping and influencing technical strategy, standards, and governance
• Recognised as a subject matter expert within EC&I engineering
• Committed to Continuous Professional Development

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.

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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.

If you need a reasonable accommodation for any part of the employment process, please complete our Accommodation Request. Requests for accommodation will be considered on a case‑by‑case basis.

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For more than 100 years, Amentum has tackled the world’s toughest challenges to deliver agile and steadfast solutions to the U.S. government and its allies. With more than 50,000 employees on all seven continents and in more than 60 countries, Amentum delivers a broad range of operational support services to meet the critical needs of our clients. Our headquarters are in Chantilly, VA. Find us online at