Administration Support Officer

Posted on September 4th, 2026
location Leiston briefcase Permanent £15.03 per hour

The Administration Support is integral to the success of this busy team.

The primary focus will be in delivering the industry assurance requirement to have all staff at least the Baseline Personnel Security Standard (BPSS) before they are set to work.

The right candidate will work alongside the Senior Management team and must be confident in correct and precise data entry. They must be confident in their ability to prioritise tasks and manage their own time. The successful candidate will be working alongside other Administrators, so they must be able to work as a team.

There will also be other key responsibilities such as scheduling staff to work over varying shift patterns using company IT & software. The role will also involve Pay, HR responsibilities and liaising with G4S Central Services and the Client team; the successful candidate must have excellent
communication skills and the ability to adapt in an ever changing environment.

The successful applicant will have the opportunity to develop their career within both G4S and the Sizewell C project.

Your Time at Work
Pay - £15.03 per hour
Hours - 40 hours per week
Shift Pattern - Monday to Friday

- Employee lifecycle administration
- GDPR compliance, confidentiality and secure handling of personal data
- Conducting presentations to new-starters during their Induction
- Recruitment and onboarding support
- BPSS, SIA and workforce compliance administration
- Training and induction coordination
- HR case administration and minute taking for formal and informal meetings
- Occupational Health referral administration
- Payroll and employee query support
- Personnel file and HR record management
- Workforce data, spreadsheets and reporting
- Client sustainability and social value reporting
- Employee communications, newsletters and memos
- Attending recruitment events and employment initiatives
- General HR and management administrative support

Our Perfect Worker
- Ability to manage multiple concurrent activities and adapt to a changing environment
- Effective decision making and sound judgement skills
- Strong interpersonal skills - building trust and support
- Excellent communication skills - written and oral
- Competent IT skills, proficient in Microsoft Office
- Adherence to company policies & operating procedures


Educational Requirements/Qualifications

- Proficient in Maths, English and IT.
- Preferred Experience
- Experience of working within a busy office environment
- At least 2 years Administration Background

Skills and abilities

- Good liaison abilities
- Identifying customer needs during service deliver

Personal qualities

- Highest levels of integrity, respectfulness and professionalism required at all times.
- Open, trusting and in the spirit of mutual support, especially when dealing with conflicts of
interests.
- An engaging and proactive 'can do' attitude where successes and failures are shared.
- Doing what we say we are going to do and only committing to what can be done.
- Listen and communicate effectively.
- Ability to plan ahead as far as possible and share intelligence to prevent surprises.


Professional Qualifications/Memberships

- Business Administration Level 2 (Desirable but not essential)
- Ability to pass and hold National Security Clearance Vetting

Key Information and Benefits
- Permanent Contract
- 224 hours (28 days leave per year inclusive of Bank Holidays)
- G4S / Aviva National Pension Scheme
- Dell, Vodafone and O2 discounts
- Perks at Work (national reward and discount scheme)
- Aviva car, home and travel insurance discount
- Health Saturday Fund (health cash plan for you and your family
- Spark - UK Employee Assistance Plan

G4S are a recognised Disability Confident Leader Employer, committed to fostering an inclusive workplace where everyone can thrive. They prioritise accessibility, support, and opportunity for all employees. Join their diverse and empowering team today!

About Staffline

Staffline are working in Partnership with G4S, providing a recruitment solution for security roles.

Please note that our job adverts are correct at the time of publication, but some details and job responsibilities are subject to change.

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