Principal Mechanical Engineer
Principal Mechanical Engineer

Principal Mechanical Engineer

Stockton-on-Tees Full-Time 48000 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead mechanical design solutions for diverse nuclear projects, ensuring quality and timely delivery.
  • Company: Join Amentum, a supportive and diverse team dedicated to empowering talent in the energy sector.
  • Benefits: Enjoy flexible working, free medical cover, enhanced parental leave, and professional development reimbursement.
  • Why this job: Be part of a transformative phase in the nuclear industry while contributing to community initiatives.
  • Qualifications: MEng, MSc, BEng or BSc in Mechanical Engineering; experience in heavy infrastructure or nuclear design preferred.
  • Other info: We embrace diversity and inclusion, welcoming applicants from all backgrounds and offering flexible work options.

The predicted salary is between 48000 - 72000 £ per year.

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 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. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.

About the Opportunity

Amentum is currently recruiting for a Principal Mechanical 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 modular reactor developers. Our work is varied, covering Licensing, New Build, Generation, Life Extension, and Defueling, and our capabilities are in demand across the nuclear sector. Your role will be to manage and deliver mechanical design 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 Operations Managers and Engineering Managers to enable delivery of maximum value. This role will be based at one of our Energy offices (Newcastle, Warrington, Glasgow, Gloucester, Stockton, Bristol or Knutsford). We put flexibility at the heart of what we do and we’re happy to consider flexible working patterns.

Role responsibilities:

  • Take ownership of technical challenges, develop a strategy and implement the solution through engagement with internal and external stakeholders.
  • Deliver technical solutions (analysis and design).
  • Produce and review design deliverables (assumption notes, technical specifications and calculation notes, methodology plans etc).
  • Work with international SMR developers to pass through the Office of Nuclear Regulation’s Generic Design Assessment process.
  • Review and justify design decisions to the ONR.
  • Fulfil and take ownership of CDM responsibilities.

Qualifications:

  • MEng, MSc, BEng or BSc in Mechanical Engineering or other relevant degree level qualification.
  • Experience in relevant field of design of heavy infrastructure projects, nuclear or regulated industry.
  • Chartered with relevant institution (e.g., IMechE, MIET) or working towards Chartership.
  • Ability to work within a design team, and also able to collaborate within multi-disciplinary teams.
  • Previous experience in the design and/or construction of engineering solutions using American codes.
  • Experience of designing pumps, valves, heat exchangers, tanks, filters or HVAC equipment as well as authoring datasheets.
  • Experience with CAD software AutoCAD, Inventor, Creo or Solidworks.
  • Experience with authoring technical drawings to BS EN 8888 and Piping & Instrumentation Diagrams.
  • Familiar with safety cases in industrial environments.
  • Experience with Matlab and MathCAD would be beneficial.
  • Experience writing test plans for Equipment Qualification.
  • Knowledge and understanding of UK Nuclear Regulatory process in field of mechanical engineering is desirable.

Our Culture

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees. We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we’re more connected, and if we are diverse, 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 centered on inclusion and diversity.

We partner with VERCIDA to help us attract and retain diverse talent. 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.

Principal Mechanical Engineer employer: Amentum

At Amentum, we prioritise your growth and well-being, offering a supportive and diverse work environment where you can thrive as a Principal Mechanical Engineer. With competitive benefits including free medical cover, enhanced parental leave, and opportunities for professional development, we empower our employees to make a meaningful impact in the nuclear sector while giving back to our communities. Our culture of safety, integrity, and inclusion ensures that every team member feels valued and connected, making Amentum an exceptional place to build your career.
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Contact Detail:

Amentum Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Mechanical Engineer

✨Tip Number 1

Familiarise yourself with the UK Nuclear Regulatory process, as this knowledge is highly desirable for the role. Understanding the specific requirements and challenges of the nuclear sector will help you stand out during discussions.

✨Tip Number 2

Network with professionals in the nuclear engineering field, especially those who have experience with small modular reactors. Engaging with industry experts can provide insights and potentially lead to referrals that could enhance your application.

✨Tip Number 3

Showcase your experience with CAD software like AutoCAD or Solidworks in conversations. Being able to discuss specific projects where you've used these tools effectively can demonstrate your technical capabilities.

✨Tip Number 4

Prepare to discuss your approach to collaboration within multi-disciplinary teams. Highlighting your ability to work alongside Operations and Engineering Managers will illustrate your readiness to tackle complex project delivery.

We think you need these skills to ace Principal Mechanical Engineer

Mechanical Design Engineering
Project Management
Stakeholder Engagement
Technical Analysis
Design Specification Development
Regulatory Compliance Knowledge
CDM Responsibilities
Collaboration in Multi-Disciplinary Teams
Experience with Heavy Infrastructure Projects
Chartered Engineer Status (or working towards)
Familiarity with American Engineering Codes
Design of Pumps, Valves, Heat Exchangers, Tanks, Filters, HVAC Equipment
CAD Software Proficiency (AutoCAD, Inventor, Creo, Solidworks)
Technical Drawing Authoring to BS EN 8888
Piping & Instrumentation Diagrams
Safety Case Familiarity
Matlab and MathCAD Experience
Test Plan Writing for Equipment Qualification
Understanding of UK Nuclear Regulatory Process

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in mechanical engineering, particularly in heavy infrastructure projects and the nuclear sector. Use specific examples that demonstrate your ability to manage and deliver design solutions.

Craft a Compelling Cover Letter: Write a cover letter that reflects your passion for the role and the company. Mention your familiarity with project delivery and how your skills align with the responsibilities outlined in the job description.

Highlight Relevant Qualifications: Clearly state your educational background, including your MEng, MSc, BEng, or BSc in Mechanical Engineering. If you are chartered or working towards chartership, make sure to mention this as it is a key requirement.

Showcase Technical Skills: Include specific technical skills that are relevant to the role, such as experience with CAD software (AutoCAD, Inventor, Creo, Solidworks) and knowledge of UK Nuclear Regulatory processes. This will help demonstrate your suitability for the position.

How to prepare for a job interview at Amentum

✨Showcase Your Technical Expertise

As a Principal Mechanical Engineer, it's crucial to demonstrate your deep understanding of mechanical design solutions. Be prepared to discuss specific projects where you've successfully managed complex technical challenges and how you engaged with stakeholders to deliver results.

✨Familiarise Yourself with Regulatory Processes

Understanding the UK Nuclear Regulatory process is vital for this role. Brush up on relevant regulations and be ready to explain how your experience aligns with these requirements, particularly in relation to the Office of Nuclear Regulation’s Generic Design Assessment.

✨Highlight Collaborative Skills

This position requires working within multi-disciplinary teams. Prepare examples that showcase your ability to collaborate effectively with Operations Managers and Engineering Managers, emphasising how teamwork has led to successful project outcomes.

✨Emphasise Your Commitment to Safety and Inclusion

Given the company's strong focus on safety, integrity, and diversity, be sure to express your alignment with these values. Share experiences that illustrate your commitment to creating a safe and inclusive work environment, as this will resonate well with the interviewers.

Principal Mechanical Engineer
Amentum
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  • Principal Mechanical Engineer

    Stockton-on-Tees
    Full-Time
    48000 - 72000 £ / year (est.)

    Application deadline: 2027-07-09

  • A

    Amentum

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