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ASSYSTEM

Engineering services for design, construction, commissioning

Senior Layout Integration Engineer

Design EngineeringConfirmed live in the last 24 hours
Full-timeWarrington, UKNo salary listed

About the Job

Requirements

  • Degree qualified in Mechanical Engineering or a related discipline, or equivalent industrial experience.
  • Significant experience in plant layout, piping layout, plant integration or multidisciplinary engineering delivery.
  • Experience leading plant area development and multidisciplinary coordination activities.
  • Experience facilitating design reviews, model reviews and technical workshops.
  • Experience using E3D, PDMS, Plant 3D, Siemens NX, Revit, Inventor or similar CAD/BIM platforms.
  • Experience using Navisworks or equivalent clash detection software.
  • Strong understanding of equipment arrangement, piping layout, constructability and plant integration.
  • Strong understanding of systems engineering principles, requirements management and interface management.
  • Experience supporting gated design review processes and technical governance activities.
  • Strong report writing, presentation and stakeholder engagement skills.
  • Ability to author, defend and implement technical recommendations.
  • SC clearance or ability to achieve it.

Responsibilities

  • Lead plant layout development from concept through detailed design.
  • Lead development of equipment, piping, cable tray, access and maintenance arrangements.
  • Lead piping routing studies and layout optimisation activities.
  • Own delivery of assigned layout work packages and plant areas.
  • Manage requirements, assumptions, constraints and interfaces across assigned scope.
  • Coordinate interfaces between systems, buildings, structures and supporting infrastructure.
  • Facilitate model reviews, layout reviews and multidisciplinary technical workshops.
  • Lead clash detection and interface management activities.
  • Support Human Factors, Fire, Architectural and Civil & Structural integration activities.
  • Ensure layout solutions satisfy system, operational, safety, construction and maintenance requirements.
  • Lead multidisciplinary activities to resolve requirements conflicts and integration challenges.
  • Author technical reports, optioneering studies, design philosophies and engineering recommendations.
  • Present and defend technical recommendations to stakeholders.
  • Support modularisation, transportation, lifting and construction assessments.
  • Mentor engineers and designers.
  • Support development of layout standards, methodologies and best practice.

Desired Qualifications

  • Experience within the nuclear, fusion, SMR or AMR sectors.
  • Experience leading major work packages or plant areas.
  • Experience supporting modularisation and construction studies.
  • Technical leadership and delivery experience on complex engineering projects.

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

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