Senior Mechanical Engineer

Assystem; Newcastle upon Tyne; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

Hybrid work model (1-2 days remote)

Job summary

Assystem is seeking a seasoned Nuclear / Thermal Power engineer in the UK to lead design reviews, optioneering, and systems engineering across Turbine Island integration for regulated projects. You will liaison with safety teams, manage interfaces, and ensure compliance with HSE, ASME, and UK standards.

The role emphasizes procurement collaboration, stakeholder engagement, and cross-disciplinary teamwork within a hybrid work setup, with strong career development opportunities.

Qualifications

• Industry experience in nuclear, thermal power, oil and gas or other regulated sectors.
• Strong background in thermal power systems from FEED to detailed design and EPC delivery.
• Procurement specifications development and collaboration with equipment suppliers.
• Extensive technical experience in thermal power or similar projects.
• Excellent at engaging with internal and external stakeholders.
• Capable of identifying and managing critical interfaces on major projects.
• Knowledge of UK Health and Safety regulations, safety systems, HAZOP and engineering standards.
• Familiarity with ASME, European and UK codes and standards.
• Experience or awareness of Systems Engineering is a plus.

Responsibilities

• Intelligent Customer Role: Ensure supplier deliverables meet requirements by critically assessing designs.
• Develop & Review Designs: Create and review Process Flow Diagrams, Piping and Instrumentation Diagrams, Layout Drawings, 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 Turbine Island: Seamlessly integrate Turbine Island design into the wider power plant.
• Provide Technical Support: Serve as the technical contact for Turbine Island interfaces and stakeholder activities.
• Support Design Reviews: Participate in Design Reviews and HAZID/HAZOP studies with multidisciplinary teams.
• Liaise on Safety: Work with the safety team on nuclear safety licensing, environmental planning/permitting, and related activities.
• Ensure Compliance: Adhere to statutory H&S policies, project quality, and the Quality Management System.

Skills

Industry experience

Thermal power

Procurement

Technical proficiency

Communication

Project management

Safety knowledge

Codes & standards

Systems engineering

Education

Bachelor's degree or Higher National Diploma in engineering

Job description

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.

Job Description

Your mission:

• Intelligent Customer Role: Ensure supplier deliverables meet requirements by critically assessing designs.
• Develop & Review Designs: Create and review Process Flow Diagrams, Piping and Instrumentation Diagrams, Layout Drawings, 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 Turbine Island: Seamlessly integrate Turbine Island design into the wider power plant.
• Provide Technical Support: Serve as the technical contact for Turbine Island interfaces and stakeholder activities.
• Support Design Reviews: Participate in Design Reviews and HAZID/HAZOP studies with multidisciplinary teams.
• Liaise on Safety: Work with the safety team on nuclear safety licensing, environmental planning/permitting, and related activities.
• Ensure Compliance: Adhere to statutory H&S policies, project quality, and the Quality Management System.

Why Join the Community of Switchers?

• Over 55 years in nuclear engineering.
• Ranked among the top 3 largest nuclear engineering companies.
• Attractive social benefits, including an engaging Employee Committee and holiday bonuses.
• Ongoing training with numerous career opportunities.
• 70% of our managers are promoted internally!
• Hybrid work: 1-2 days remote per week.

Qualifications

• Industry Experience: Previous work in nuclear, thermal power, oil and gas, or other regulated sectors. Experienced with steam turbines, condensers, feedwater heaters, pumps, and piping systems.
• Thermal Power Expertise: Strong background in thermal power systems, with experience from FEED to detailed design and EPC delivery.
• Procurement Skills: Skilled in developing procurement specifications and collaborating with equipment suppliers.
• Technical Proficiency: Extensive technical experience in thermal power or similar projects.
• Communication: Excellent at engaging with internal and external stakeholders.
• Project Management: Capable of identifying and managing critical interfaces on major projects.
• Safety Knowledge: Proficient in UK Health and Safety regulations, safety systems, HAZOP, and engineering standards.
• Codes & Standards: Knowledgeable in ASME, European, and UK codes and standards.
• Systems Engineering: Experience or awareness in Systems Engineering is a plus.

Personal Attributes:

• Results-Oriented: Independent, proactive, and team-focused with strong organizational skills.
• Confidentiality: Professional in handling sensitive nuclear information in line with export control obligations.
• Educational Background: Bachelor's degree or Higher National Diploma in engineering.
• Professional Registration: CEng or working towards it.\
• Security Clearance: SC Clearance or ability to achieve it.

Additional Information

Due to the nature of the work, applicants must meet UK security clearance criteria.

Ready to make a difference in the nuclear engineering world? Join us and be a part of the future of nuclear and fusion innovation!

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD

We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

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.