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ASSYSTEM

Engineering services for design, construction, commissioning

Mechanical Engineer - Valve Contract Engineering

Mechanical EngineeringConfirmed live in the last 24 hours
ContractBridgwater, UKNo salary listed

About the Job

Requirements

  • A degree in Mechanical Engineering, Nuclear Engineering, or a related Engineering or Science discipline is required.
  • Experience in valve engineering, including specification, design, procurement, qualification, manufacturing, installation, commissioning, or maintenance of industrial valves is required.
  • Experience working on complex engineering projects within highly regulated industries such as Nuclear, Energy, Oil & Gas, Defence, Process, or Power Generation is required.
  • A good understanding of engineering documentation, including technical specifications, equipment data sheets, calculations, testing documentation, and supplier deliverables is required.
  • The ability to assess technical issues, identify practical solutions, and support their implementation is required.
  • The ability to work effectively across multidisciplinary teams is required.
  • Strong organisational skills, attention to detail, and the ability to manage multiple priorities simultaneously are required.
  • Excellent written and verbal communication skills are required.
  • Fluency in English and the ability to prepare clear and concise technical documentation and present technical matters to a range of stakeholders are required.
  • The successful candidate should be able to work collaboratively across multiple engineering disciplines and organisations.
  • The successful candidate should take a proactive approach to problem solving and issue resolution, demonstrate sound engineering judgement and analytical thinking, and manage multiple interfaces while understanding broader project objectives.
  • The successful candidate should be able to take both a detailed technical view and a strategic project perspective, plan and organise work, synthesise complex technical information, and communicate it effectively.
  • The successful candidate should be committed to quality, nuclear safety, and continuous improvement; produce clear, accurate, and professional technical documentation; work independently while contributing within a team; and reliably meet commitments and deadlines.

Responsibilities

  • Undertake technical clarifications of valve-related deliverables required for construction, with support from the Back Office teams that carried out initial design studies (EPR-E, EDVANCE, CNEPE, and valve suppliers).
  • Gather and review input data; analyse and update design assumptions, technical specifications, equipment data sheets, and associated documentation.
  • Review valve design documentation and ensure compliance with applicable project requirements, nuclear codes, and standards.
  • Perform and support valve engineering assessments, including functional and operational reviews, assessment of operational requirements, review of valve qualification and environmental requirements, and identification and implementation of appropriate design modifications.
  • Manage and close valve-related technical queries and open points.
  • Assess issues arising during manufacturing, testing, installation, and commissioning, and provide technical responses.
  • Review and integrate valve-related modifications requested by project stakeholders after Joint Design Office handover.
  • Perform engineering assessments and hand calculations to evaluate the feasibility and impact of proposed modifications.
  • Review and check technical documentation produced by suppliers and external engineering subcontractors.
  • Propose technical improvements and optimisation for valve designs and associated documentation.
  • Work with system engineers, layout engineers, CAD designers, and other disciplines to support valve integration within plant design.
  • Lead technical meetings and manage interfaces with multiple stakeholders.
  • Provide technical expertise on valve operation, maintainability, reliability, and nuclear safety requirements.
  • Coordinate valve-related activities within the Joint Design Office and act as the entry point for valve queries originating from the HPC site.
  • Coordinate technical activities across all valve packages and systems, ensure consistency of technical solutions between stakeholders, and monitor and support resolution of valve-related open points.
  • Facilitate communication between design teams, suppliers, construction teams, and the client.
  • Support project delivery objectives by ensuring valve engineering activities are executed in line with project schedules and quality requirements.

Desired Qualifications

  • Knowledge of nuclear industry codes and standards.
  • Experience with valve sizing, actuator sizing, valve qualification, or performance assessments.
  • Experience reviewing supplier documentation and managing technical interfaces with valve manufacturers.
  • Knowledge of EPR design principles, the HPC Project, and associated engineering methodologies.
  • Understanding of nuclear safety requirements.
  • Previous experience supporting construction, installation, commissioning, or manufacturing activities.
  • French language skills.
  • Knowledge of 2D and 3D design software and engineering document management tools.
  • Experience working in an international and multicultural environment.
  • Experience coordinating cross-functional technical activities and managing complex stakeholder interfaces.
  • The ability to prioritise competing demands, challenge assumptions where appropriate, and understand the constraints and requirements of adjacent disciplines.
  • Demonstrated ability to deliver commitments and meet project deadlines.

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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