A

ASSYSTEM

Engineering services for design, construction, commissioning

Senior Mechanical Engineer

Design EngineeringConfirmed live in the last 24 hours
Full-timeNewcastle upon Tyne, UKNo salary listed

About the Job

Requirements

  • Previous work in nuclear, thermal power, oil and gas, or other regulated sectors.
  • Experience with steam turbines, condensers, feedwater heaters, pumps, and piping systems.
  • Strong background in thermal power systems, with experience from front-end engineering design (FEED) through detailed design and engineering, procurement, and construction (EPC) delivery.
  • Skill in developing procurement specifications and collaborating with equipment suppliers.
  • Extensive technical experience in thermal power or similar projects.
  • Ability to identify and manage critical interfaces on major projects.
  • Proficiency in UK health and safety regulations, safety systems, hazard and operability studies (HAZOP), and engineering standards.
  • Knowledge of ASME, European, and UK codes and standards.
  • A bachelor's degree or Higher National Diploma in engineering.
  • Chartered Engineer (CEng) registration or working toward it.
  • Ability to obtain UK Security Check (SC) clearance and meet UK security clearance criteria.
  • Professional handling of sensitive nuclear information in line with export control obligations.

Responsibilities

  • Critically assess supplier designs to ensure supplier deliverables meet requirements.
  • Create and review Process Flow Diagrams, Piping and Instrumentation Diagrams, layout drawings, sizing calculations, datasheets, and specifications.
  • Lead and review optioneering studies, Decision Record Files, Design Descriptions, and Requirement Specifications.
  • Develop and review functional and design requirements using Systems Engineering principles.
  • Integrate the Turbine Island design into the wider power plant.
  • Serve as the technical contact for Turbine Island interfaces and stakeholder activities.
  • Participate in design reviews and HAZID/HAZOP studies with multidisciplinary teams.
  • Work with the safety team on nuclear safety licensing, environmental planning and permitting, and related activities.
  • Adhere to statutory health and safety policies, project quality requirements, and the Quality Management System.

Desired Qualifications

  • Experience or awareness in Systems Engineering.

About the Company

ASSYSTEM

Engineering services for design, construction, commissioning

Assystem provides engineering services for complex projects, covering design, construction, supervision, commissioning, and operation, with a strong focus on the nuclear and energy sectors. Its approach combines multidisciplinary engineering teams and project-management capabilities to move projects from initial concept through to operation. The company differentiates itself through a long track record, strategic acquisitions (including Alphatem in 1995 and Mactech Energy Group in 2025) and an early public offering in 2013, which have expanded its capabilities and market reach in the energy and nuclear fields. Its goal is to be a leading, reliable partner for clients by delivering end-to-end engineering services and helping them meet safety, performance, and regulatory requirements across the project lifecycle.

Company size
5,001-10,000
Company stage
IPO
Headquarters
Paris, France
Founded
1966

Recently Posted Jobs

Explore more opportunities at ASSYSTEM

See more jobs