Senior Principal Mechanical Engineer
Role Overview
Senior Principal Mechanical Engineer in Assystem's Fusion and Modular Nuclear business unit, supporting design and development of technologies for net-zero power generation.
Work spans major UK and international nuclear client projects.
Key Skills for This Role
Full Job Posting
Role overview
Senior Principal Mechanical Engineer in Assystem's Fusion and Modular Nuclear business unit, supporting design and development of technologies for net-zero power generation.
Work spans major UK and international nuclear client projects.
Responsibilities
- Lead and support design of personnel airlocks, the main equipment access hatch, fuel transfer channel, piping and electrical penetrations, and specialist nuclear doors.
- Conduct DFMEA and HAZID studies; maintain human factors checklists and the project risk register.
- Oversee requirements-aligned design packages and coordinate engineering, supplier and stakeholder interfaces for cooling water systems.
- Prepare technical specifications for procurement, fabrication and installation of cooling water system components.
- Collaborate with engineering and project teams, including employees and secondees.
Candidate profile
- Multidisciplinary engineering team leadership and steam cycle modelling oversight.
- Project budget and lifecycle planning experience; cooling water equipment expertise.
- Knowledge of ONR, Environment Agency and HSE regulations; requirements capture and systems engineering awareness.
- Subcontractor management experience and CEng accreditation in a relevant discipline.
- Strong written and oral communication, leadership, initiative and ability to work independently in a multinational environment.
- Able to travel to Assystem offices and customer sites within the UK.
- Must meet residency criteria to attain minimum UK security clearance if not already cleared to at least SC level.
Workplace
- The posting states on-site work and also describes hybrid work with one to two remote days per week.
Benefits
- Social benefits include an Employee Committee and holiday bonuses.
- Ongoing training and career opportunities are available.
About Assystem
Assystem describes itself as a major independent nuclear engineering firm with over 60 years of experience in highly regulated sectors.
The company supports infrastructure projects across engineering, project management and digital solutions.
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