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UK Ministry of Defence

Security Services Group (SSG) - Site Manager DSTL

On site

England, United kingdom

Full Time

10-12-2025

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Skills

Communication Teamwork Leadership Security Policies and Procedures Training Effective Communication Team Leadership Project Management

Job Specifications

Idmiston, South West England, SP4 0JQ

Job Summary

Security Services Group (SSG) is the MOD’s Technical Authority for electronic and physical security providing in-house expert advice, design, installation and maintenance of electronic and physical security systems across Government, prioritised towards Secret and Above Secret, and items Attractive to Criminal and Terrorist Organisations (ACTO). SSG is part of GUARDIAN and is positioned within Standing Joint Command to support UK homeland security and resilience.

With an FTE of 325, SSG provides technical specialist ‘consultancy’ advice to projects to support the creation of design specifications through to commissioning; project management and delivery with through life maintenance; strategic and tactical compliance assurance reviews and audits across the business; an assured government use only Intruder Detection System built in-house; and security furniture services. Head of SSG is also the MOD’s Head of Specialism for Physical Security across the MOD (part of the Government Security Profession).

SSG’s Operational Delivery teams are the MOD’s specialist in-house security providers, delivering project management, design, installation and 24/7, 365 days a year maintenance of all aspects of electronic and physical security, with a global reach. SSG’s work is independently audited to ensure, ISO 9001:2015 and NSI compliance and accreditation as well as MOD’s own internal compliance regime. To learn more about SSG, visit Security Services Group - GOV.UK

This position is advertised at 37 hours per week.

Job Description

The DSTL SSG Site Manager will be responsible for the effective management, coordination, and delivery of security and operational services at Porton Down and Portsdown West in collaboration with the Security Services Group (SSG). The role ensures that all site activities are conducted safely, securely, and in compliance with organisational policies, procedures, and relevant legislation.

The Site Manager will act as the primary point of contact for all site-related security and operational matters, ensuring the smooth running of services, effective stakeholder engagement, and the delivery of high-quality support to meet the needs of the Defence Science and Technology Laboratory. This role requires a minimum on-site attendance of 60% of the working week at DSTL Porton Down.

Key Responsibilities Include:

Site Security Management:
Oversee and manage all security operations at the DSTL Porton Down, ensuring compliance with MOD security policies and procedures.
Implement and maintain robust security measures to protect personnel, assets, and sensitive information.
Conduct regular security assessments, audits, and inspections to identify and address vulnerabilities.
Act as the primary point of contact for security incidents, coordinating responses and investigations as required.
Operational Management:
Manage and coordinate the delivery of SSG services, including facilities management, logistics, and other support functions.
Ensure the site operates efficiently and effectively, meeting the needs of DSTL and other stakeholders.
Monitor and maintain the SSG infrastructure, ensuring it is fit for purpose and compliant with health, safety, and environmental regulations.
Health, Safety, and Compliance:
Ensure all site activities comply with health, safety, and environmental legislation, as well as organisational policies and procedures.
Promote a strong safety culture across the site, providing training and guidance to staff as required.
Conduct regular risk assessments and implement measures to mitigate identified risks.
Stakeholder Engagement:
Act as the primary SSG point of contact for DSTL site users, contractors, and other stakeholders, ensuring effective communication and collaboration.
Build and maintain strong working relationships with key stakeholders, including DSTL leadership, SSG teams, and external contractors.
Respond to and resolve site-related issues or concerns in a timely and professional manner.
Team Leadership and Management:
Lead and manage a team of SSG staff and contractors, providing clear direction, support, and performance management.
Ensure staff are adequately trained and equipped to carry out their roles effectively.
Foster a positive and inclusive working environment that encourages teamwork, innovation, and continuous improvement.
Planning and Reporting:
Develop and implement site management plans, ensuring alignment with organisational objectives and priorities.
Monitor and report on site performance, including key metrics such as security, safety, and customer satisfaction.
Identify and implement opportunities for improvement, driving efficiencies and enhancing service delivery
Budget and Resource Management:
Manage site budgets, ensuring resources are allocated effectively and expenditure is controlled.
Oversee procurement and contract management for site-related services and supplies.

The DSTL SSG Site Manager

About the Company

We protect the security, independence and interests of the United Kingdom at home and abroad. We work with our allies and partners whenever possible. Our aim is to ensure that the UK’s Armed Forces have the training, equipment and support necessary for their work, and that we keep within budget. Our priorities 2015 to 2020 are to: · protect our people · project our global influence · promote our prosperity · maintain a strategic base and integrated global support network, and manage the D... Know more