Piping Stress Engineer

Today, 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 the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

The Job Mission

You will perform detailed pipe stress analysis for high-integrity piping systems across complex nuclear projects.

You will provide specialist engineering input covering flexibility, thermal, seismic and equipment loading assessments.

• Perform detailed pipe stress analysis using CAESAR II software
• Assess flexibility, thermal expansion, vibration and seismic loading
• Evaluate pipe supports, restraints and spring hanger requirements
• Apply ASME, EN, RCC-M and project-specific design requirements
• Assess piping loads transferred onto connected mechanical equipment
• Produce clear stress reports, calculation notes and technical justifications
• Review piping layouts, isometrics and 3D models for stress requirements
• Coordinate technical interfaces with piping, process and structural teams
• Support design reviews, risk assessments and nuclear quality requirements
• Provide technical guidance to junior engineers and project teams

• Degree in Mechanical Engineering or related engineering discipline
• Proven experience as a Pipe Stress Engineer on complex projects
• Strong proficiency using CAESAR II for piping stress analysis
• Working knowledge of ASME Section III and B31 piping codes
• Understanding of static equipment including vessels and heat exchangers
• Strong understanding of piping flexibility and support methodologies
• Excellent technical report writing and documentation skills
• Strong analytical, problem-solving and attention-to-detail capabilities
• Experience with in nuclear or other high-integrity industries advantageous
• Knowledge of E3D, PDMS, Navisworks or AutoCAD advantageous

Ready to shape the future?
Join your future team delivering one of Europe’s most ambitious energy programmes. We welcome applicants across all levels of experience with mechanical, electrical, M&E or construction delivery backgrounds. This is your opportunity to develop within a sector offering long term stability and progression.

• Hybrid Working Opportunity
• Flexible working hours
• Market Leading Pension scheme (8% company contribution / 4% personal contribution)
• 25 days’ paid annual leave + bank holidays + option to buy or sell days
• Professional fees reimbursed
• Employee referral scheme
• Competitive Sick Pay – Support when you need it
• Income Protection and 3x Salary Death in Service Cover
• Free Digital Gym Access – Expert led fitness classes
• 24/7 Employee Support Line – Mental health, financial and legal help

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.

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.