Nuclear Plant Modification Program Lead

# Plant Modifications Proposal Manager
* Nuclear* Contracting / Project Management
* Seascale* United Kingdom
* 26/05/26
* On site
* Share

I apply##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
** Role Purpose
** The Lead PMP Manager is responsible for the leadership, coordination, and governance of Plant Modification Proposals (PMPs), ensuring modifications to plant and processes are controlled, safe, and compliant with Site Licence Conditions and SLP 1.02.14 requirements. The role leads PMP delivery from initiation through to closeout, ensuring effective stakeholder engagement, integration with project controls, and adherence to safety, environmental, and design intent requirements.

The successful candidate will oversee other PMP Managers delivering PMPs and will also deliver PMPs themselves — this is not solely an “authoring” role.
** Key Responsibilities
** Leadership & Management Lead and coordinate PMP Managers and support personnel where required.
Provide direction on PMP prioritisation, workload, and lifecycle management.
Ensure alignment with organisational governance, safety case requirements, and modification control processes.
Act as the senior interface for PMP-related matters within projects, programmes, and the OU. PMP Lifecycle Management Manage PMPs through their full lifecycle:
Authoring   Internal review   Committee presentation and endorsement   Implementation oversight   Handover to operations   Closeout Ensure timely and compliant progression of all PMPs in line with site procedures.
Maintain a structured PMP tracker and monitor progress against key milestones.
Ensure effective preparation, implementation, and closeout of plant modifications with appropriate stakeholder engagement throughout. Governance & Compliance Ensure compliance with:
Site Licence Condition 22 (control of modifications)   SLP 1.02.14 (Modification or experiment on existing plant) Conduct internal PMP reviews to ensure quality and completeness prior to submission.
Ensure all required assessments, documentation, and SME inputs are captured.
Support and ensure adherence to Configuration Change Control (CCC) process requirements. Stakeholder & Interface Management Engage with Subject Matter Experts (SMEs) across engineering, safety case, environmental, and operations to support PMP development. Interface closely with:
PMP Coordinator   Project Managers and Construction Teams   Design and Engineering teams   Operations and Safety Case representatives Lead and present PMPs at committee and governance meetings.
Demonstrate effective engagement with SMEs when specialist input is required. Planning, Reporting & Controls Attend:
Weekly construction, design, and project meetings   Lead weekly PMP team meetings (tracker updates)   Lead weekly reporting meetings with line management   Monthly PMP governance / presentation meetings   Lead monthly planning meetings to update P6 programme Ensure PMP activities are reflected within the P6 schedule and aligned with project milestones.
Provide clear status reporting, risk visibility, and recovery actions where required. Risk, Safety & Assurance Ensure all modifications consider:
Safety case implications   Environmental impacts   Design intent and plant performance Identify and escalate risks associated with plant modifications.
Ensure safe implementation of modifications with no adverse impact on operations.## My profile
** Key Skills & Competencies
** Strong knowledge of PMP process and governance   Understanding of nuclear / regulated environment compliance   Experience managing plant modification lifecycle   Strong stakeholder engagement and communication skills   Ability to interpret safety case and engineering requirements   Competence in…