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About Assystem
Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in executing complex and strategic infrastructure projects that require high safety and security standards.
Assystem mobilises 8,000 experts across 13 countries, providing engineering, project management, and digital solutions across the entire project lifecycle.
Job Title & Overview
🚀 Senior Mechanical Engineer – Fusion and Modular Nuclear Business Unit 🚀
Reporting to the Balance of Plant Lead, this role is responsible for developing a fluid system, collaborating with multidisciplinary teams, and managing supply chain collaborations.
Key Responsibilities
- Lead Fluid System Development
- Manage a small fluid system development team.
- Review Design Documents
- Develop and review Process Flow Diagrams (PFDs), Piping and Instrumentation Diagrams (P&IDs), Layout Drawings, Component Sizing Calculations, Datasheets, and Specifications.
- Conduct Optioneering
- Lead and review optioneering studies, Decision Record Files, Design Descriptions, and Requirement Specifications.
- Apply Systems Engineering
- Develop and review Functional and Design Requirements using Systems Engineering principles.
- Integrate System Design
- Ensure seamless integration of the fluid system into the broader power plant design.
- Provide Technical Support
- Act as the technical contact point for interfaces and stakeholder activities.
- Support Design Reviews
- Participate in Design Reviews, HAZID/HAZOP studies, and multidisciplinary assessments.
- Liaise on Safety
- Collaborate on nuclear safety licensing, environmental planning/permitting, and associated interface tasks.
- Ensure Compliance
- Adhere to statutory health & safety (H&S) policies, project quality, and safety regulations.
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Why Join Assystem?
- 55+ years in nuclear engineering – Join a legacy of innovation.
- Ranked Top 3 nuclear engineering company globally.
- Attractive benefits, including an engaging Employee Committee and holiday bonuses.
- Ongoing training with vast career development opportunities.
- 70% of managers promoted internally – Fast-track professional growth.
- Hybrid work model: 1–2 days remote per week for flexible working.
Qualifications & Requirements
Industry Experience & Technical Skills
- Background in nuclear, thermal power, oil & gas, or other highly regulated sectors.
- Strong fluid system design development experience.
- Proficiency in roles spanning Front End Engineering Design (FEED) to detailed design and Engineering, Procurement, and Construction (EPC) delivery.
- Skilled in developing procurement specifications and liaising with suppliers.
Knowledge & Competencies
- Technical expertise: Strong background in thermal power or similar large-scale industries.
- Communication: Exceptional ability to engage with stakeholders at all levels.
- Project Management: Ability to identify and manage critical interfaces on major projects.
- Safety & Standards:
- Knowledge of UK Health and Safety regulations, safety systems, HAZOP, and relevant engineering standards.
- Familiarity with ASME, European, and UK codes and standards.
- Systems Engineering: Previous experience or awareness is advantageous.
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Personal Specification & Attributes
- Results-driven: Independent, proactive, and collaborative team player.
- Organisational skills: Capable of handling confidential nuclear information diligently.
- Education: Bachelor’s degree or Higher National Diploma (HND) in engineering.
- Professional Registration: Currently holding (or working towards) Chartered Engineer (CEng) in a relevant discipline.
- Security Clearance: Must possess SC clearance or ability to achieve it.
Additional Information
Due to the regulated nuclear industry, applicants must meet UK security clearance criteria.
Application Notice
Assystem remains committed to fair recruitment practices. We never request:
- Payment of any kind during recruitment.
- Specialised CV writing services.
- Sensitive personal information.
Diversity & Inclusion
We foster an atmosphere of equality and diversity, celebrating differences in background and perspective to drive innovation and impact. Skills, talent, and bold, forward-thinking contributions are what matter most.
Bring your unique perspective and help shape the future of nuclear and fusion innovation! 🌐✨
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