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Security Assistant Project Manager 
G4S
Sizewell C

Key Responsibilities

? Support the development, baseline tracking, and ongoing maintenance of project plans,
schedules, and operational milestones across the Sizewell C security portfolio.
? Monitor project progress across all security workstreams and produce robust status reports,
dashboards, and management information metrics.
? Maintain central project governance documentation, including complete
action, decision, risk, and issue logs (RAID logs), ensuring timely updates and
escalation.
? Coordinate project activities, operational alignment, and stakeholder engagement across
multi-disciplinary site departments, Tier 1 contractors, and client teams.
? Maintain rigorous document control and project record management in strict accordance
with agreed site governance processes and ISO 9001 quality standards.
? Support internal and external assurance reviews, audits, and compliance activities,
including evidence gathering, audit preparation, and action tracking.
? Produce clear management information, executive performance dashboards, and key
performance indicators (KPIs) for senior leadership.
? Provide day-to-day project administration and operational coordination support as
directed by the Security Compliance Manager and Projects & Assurance Manager.
? Champion Health, Safety, and Environment (HSE) standards across all security
operational areas,embedding an active, proactive safety culture.
? Ensure all personnel management, project activities, and access procedures comply
strictly with G4S HR policies, nuclear safety rules, and security vetting mandates.

Skills and Competencies

? Communication Skills: Excellent written and verbal communication skills, with the ability
to draft concise management reports, project dashboards, and executive briefings.
? Planning & Organisation: Strong project planning, tracking, and organizational
capabilities, with acute attention to detail and governance rigor.
? Tool Proficiency: High proficiency in MS Office (Word, Excel, PowerPoint) and Microsoft
SharePoint for project documentation and workflow management.
? Stakeholder Management: Strong interpersonal and customer-focused skills, capable of
coordinating activities effectively across diverse internal and external workstreams.
? Adaptability & Flexibility: Ability to adapt to evolving project requirements, multi-agency
responses, and dynamic nuclear construction phases.
? Problem Solving & Teamwork: Collaborative team player with an innovative,
solution-oriented approach to resolving project roadblocks and risks.

Profile

Educational Requirements/Qualifications

? A good standard of education in Maths, English and IT.
? Solid knowledge of recognized project management principles (PRINCE2, APM, or
equivalent).
Preferred Experience
? Proven track record in a Project Support Officer (PSO) or Assistant Project Manager
(APM) role.
? Experience working within Critical National Infrastructure (CNI), nuclear new build, major
infrastructure, military, or police environments.
? Demonstrable experience in maintaining project governance artifacts (action, decision,
risk, and issue logs).
? Proven capability in establishing collaborative relationships with client representatives and
multi- disciplinary project teams.
? Practical experience supporting quality audits, compliance assurance, and document
control.

Personal Qualities

? Highest levels of integrity, respectfulness, and professionalism required at all times.
? An engaging, proactive ‘can do’ attitude where successes and challenges are shared
across the team.
? Strict adherence to commitments: ‘Do what we say we are going to do and only commit to
what can be.’
? Strong active listening skills and clear, open communication style.
? Ability to plan ahead to prevent surprises and proactively mitigate operational risks.
Professional Qualifications/Memberships
? PRINCE2 Foundation / Practitioner or APM Project Management Qualification (PMQ / PFQ)
held or working towards.
? Risk Management qualification held or developing towards.
? IOSH Managing Safely or relevant Health & Safety qualification preferred.

Specific Occupational Requirements

? Ability to pass and hold National Security Clearance Vetting
? UK Driving License is essential
? Produce a Five year verifiable work history

Training and Development Requirements

External / Client – Contract Specific:
? BPSS Vetting – NNB
? SC Security Clearance
? CSCS MAPS / EDF Site Induction
? D&A (Drug & Alcohol) Testing
? Sizewell C Site Induction & Local Site Access Protocols

Internal / Professional Development:

? BS7858 Vetting
? G4S Online Induction & Site Induction
? Project Management Training – PRINCE2 / APM Foundation (minimum) working towards
Practitioner
? ISO 9001 Quality & Compliance Awareness
? Risk Management & RAID Log Maintenance
? MS SharePoint & Advanced Document Control

Other Information: 

Competitive Market Rate - 12-Month Fixed Term
contract (Mobilisation Target: 1st December 2026)
40 hours per week – Office Hours with operational flexibility and hybrid working options as required.

Up to 60k depending on experience & qualifications 

? 12 Month Contract
? 25 days leave per year + Bank Holidays
? G4S National Pension Scheme
? Life assurance benefit
? Employee discount scheme
? Eye care vouchers
? Aviva car, home and travel insurance discounts
? Health cash plan (covering employee and family)

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.