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HomeCareer Principal CS&A Engineer

Our Vacancy

Principal CS&A Engineer

  • Nuclear
  • Permanent /
  • North West England
  • United Kingdom
  • 30/08/25
  • On site

⚡️💡 About Assystem


At Assystem, our mission is to accelerate the energy transition worldwide. With over 55 years of expertise in highly regulated sectors, our 7,750 Switchers globally deliver cutting-edge engineering and project management solutions. Join us and be part of one of the top three nuclear engineering companies in the world!


🤝 Why Join the Community of Switchers?


As a member of Assystem, you’ll be part of a team driving the low-carbon energy future. We’re ranked second globally in nuclear engineering, offering you the chance to work on world-class projects across the Civil & Defence Nuclear estates.


Job Description

👷‍♂️ Principal CS&A Engineer
📍 Warrington
📄 Contract / Staff

A CS&A Engineer is required to support the delivery of the CS&A elements of the project, in collaboration with other stakeholders and engineering disciplines. The role will involve the following, among others:

🔧 General all-round civil and structural design experience required, with experience working on new nuclear build and interfaces with existing structures preferred.

🏗️ Experience is also required in the design of concrete, steel and masonry structures, subject to normal and abnormal environmental loading, including seismic assessments (preferred).

📐 Supporting the delivery of the CS&A design deliverables (e.g. designs, assessments, drawings, and reports), checking and approving the output.

☢️ Experienced in delivering work within the nuclear industry (preferred).

🎓 The person should be either a Chartered Civil or Structural Engineer, or at minimum an Incorporated Engineer.

🤝 This role requires interface with Integrated Design Team, facility team (including systems engineering), other project functions and must work closely throughout project phases. The ability to work collaboratively in a team environment and on-site visits.

My profile

🎓 Essential Qualifications:

📘 Degree qualified CS&A Engineer (or equivalent through enhanced experience)

🛠️ Essential Experience:

⏳ A minimum of three years working within a highly regulated industry
🧰 Familiar with a range of available design technologies and techniques
📄 Production of CS&A design documents, e.g. civil and structural calculations (design/assessment/substantiation), engineering drawings, specifications, scopes of work, method statements
🏗️ Proficient in Steel and Concrete design to current codes
⚠️ Knowledge of CDM and design responsibilities
🧑‍💼 Capable of independent and autonomous work during the delivery of packages
🤝 Able to actively seek input from other engineers, specialists, facility and project team members to improve understanding and deliver fit-for-purpose solutions
🗣️ Able to present information clearly, tailored to a variety of target audiences

🌟 Desirable:

📈 Working towards Chartered Engineer status
☢️ Experience of Sellafield or broader nuclear industry design
🌍 Interest or experience in Sustainability

The successful applicant must be a UK resident and, due to the nature of the work to be undertaken, applicants will be required to meet this criteria in order to attain a minimum level of BPSS clearance. 

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

Are you a prospective or recent graduate?

Assystem offers you the opportunity to join our Switch to Grow UK Graduate Scheme, where you’ll gain hands on experience in engineering, digital services, and project management by working on some of the world’s most critical energy projects.

Be part of the challenge of the century; accelerating the switch to low carbon energy!

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