Security Supervisor

ASEL design, develop and deliver fully bespoke and integrated security solutions, seamlessly bringing together people, technology and processes to achieve results-driven outcomes. As the original thinkers behind security risk modelling — which has revolutionised the industry — our business is underpinned by a risk advisory practice that utilises data and insight to identify and mitigate risk, inform strategy, prevent crime and reduce cost.

We believe authenticity and transparency are vital to success. Our main objective is to always act with sincerity and integrity, providing a genuinely collaborative service that customers can trust. ASEL is part of the Argenbright Holdings Group, a privately owned $2.2bn organisation founded in 1979 and headquartered in Atlanta, Georgia, with a heritage in security services across the USA and Europe.

The Security Supervisor is a leadership role responsible for the day-to-day management, performance, and operational delivery of the SST across the Scotmid Cooperative estate in Scotland. You will lead a team of mobile Security Support Officers operating across early, mid, and late shifts, ensuring consistent service delivery, strong client relationships, and a safe and compliant working environment.

This is a hands‑on management role requiring both strategic oversight and operational involvement. You will be the primary point of escalation for your team, the go‑to contact for client queries, and a key link between field operations and internal stakeholders. Flexibility beyond core Monday to Friday hours is expected to support rota management, shift cover, and operational continuity.

Core hours for this role are 4 on 4 off Days and Nights 48 - Hours per week , based ever, the nature of the SS operation means flexibility is an essential part of the role. The supervisor will be expected to adapt their hours to support rota gaps, provide on‑call assistance during evenings or weekends, and attend operational deployments or client meetings outside of core hours where required.

The SST operates across the contracted shift patterns which the manager will be responsible for staffing and overseeing:

• Lead, support, and motivate Security Support Officers across all shifts to ensure consistent high performance
• Deliver regular 1:1 performance reviews, coaching sessions, and development feedback
• Manage rota planning, ensuring adequate staffing levels, shift coverage, and fair distribution of working hours
• Process holiday requests and sickness notifications, and support planned preventative maintenance (PPM) with appropriate cover arrangements
• Provide on‑call support to assist team members with urgent operational issues outside of core hours
• Issue ongoing team communications including operational updates, performance expectations, and incident notifications
• Lead recruitment activity including interviews, onboarding, and initial training for new team members

• Manage guarding requests and ensure all deployments meet contractual and operational requirements
• Coordinate police patrols, external partner responses, and joint security initiatives across the estate
• Monitor and action alarm logs, escalating issues and ensuring timely resolutions
• Oversee PPM support and ensure continuity of service during planned and unplanned absences
• Provide hands‑on operational support to field teams, including shift cover when operationally necessary
• Maintain and oversee the upkeep of pool vehicles, ensuring they are roadworthy, clean, and fit for purpose

• Administer and maintain Paxton, People Safe, Timegate, and Power BI systems
• As…