Senior Administrator (Support Services)
Position Status: Permanent
Salary Range: Competitive/Negotiable – dependent on skills/experience + Bonus and benefits package
Location: Office Based – Gloucester area
Hours: Monday to Friday – 08.30 to 17.30
About Security Strongholdings Group
Security Strongholdings provides Support Services to our wider group, which consists of two trading companies.
As a group we deliver trusted advice across a broad range of security environments, partnering with organisations to manage risk, strengthen resilience, and make informed security decisions.
We are a values-led organisation committed to Respect, Integrity, Collaboration, and Excellence, and we are proud to support a diverse and inclusive workplace.
Our teams work closely with clients to deliver value for money, thorough, high quality advisory services from strategy and design through to delivery and sign off.
Role Overview
This excellent opportunity is for a skilled professional to join our established team as a fulltime Senior Administrator specifically dedicated to one of our trading companies. The role sits within the Support Services Team, reporting to the Support Services Manager, working across multiple workstreams.
You will play a key role in the team, collaborating with both colleagues and clients to ensure successful outcomes. The position is based in our offices near Gloucester with some travel required to attend meetings and to support business events across the country.
Your Qualifications & Skills
Administrative Experience
- Extensive experience in a senior administration, office management, or business support role.
- Experience coordinating executive diaries, meetings, travel arrangements, and office operations.
- Strong document management, record keeping, and administrative coordination skills.
- Experience supporting multiple workstreams while managing competing priorities.
- Previous experience within professional services, consultancy, or security-related environments is advantageous.
- Eligibility to obtain BPSS and BS:7858 security screening.
Business Support & Office Operations
- Support GSOC administration, including rosters, schedules, and documentation.
- Manage office enquiries, inboxes, calls, visitors, and daily operations.
- Coordinate meetings, diaries, minutes, action logs, and travel arrangements.
- Maintain records, document control, trackers, and employee onboarding.
- Support HSE activities and improve administrative processes.
Professional Skills
- Excellent organisational skills with exceptional attention to detail.
- Strong communication skills with the ability to engage confidently at all levels.
- Ability to multitask, prioritise workloads, and consistently meet deadlines in a fast-paced environment.
- Proficient in Microsoft 365 applications including Word, Excel, Outlook, Teams, and PowerPoint.
- A proactive approach to identifying process improvements and administrative efficiencies, including AI-assisted solutions.
- Strong customer service, relationship management, and problem-solving skills.
Ways of Working
- Work proactively and independently while effectively managing multiple priorities across different programmes.
- Build trusted relationships with colleagues, clients, suppliers, and key stakeholders.
- Maintain high standards of accuracy, professionalism, confidentiality, and customer service.
- Adapt positively to changing priorities within a fast-paced and agile business environment.
- Contribute positively to a collaborative, supportive, and high-performing team culture.
What We Offer
We support our people to learn, grow and thrive both personally and professionally.
Competitive salary & benefits
Learning & career progression
Funding for memberships, training & accreditations
Health & wellbeing support
Flexible working arrangements
Inclusive & respectful culture
Work with experienced specialists
Meaningful, high-quality security outcomes
Security Strongholdings Group is committed to building a diverse and inclusive workplace where everyone is treated with airness, dignity and respect. We welcome applications from people of all backgrounds and experiences and we encourage candidates to apply even if they do not meet every single criterion listed, provided they can demonstrate the skills and potential to succeed in the role.
Application Process
Successful candidates will be required to demonstrate their right to work in the UK and to pass BPSS and BS:7858 security screening, sponsored by the company, before employment commences. Additional higher security screening may be necessary for specific client requirements.
Join our Team
We are always on the lookout for people who are passionate about security and working together.