Datacenter Security Manager (UK)

Please note this is an onsite position in the Stockley Park area. About Nscale Nscale is the GPU cloud engineered for AI. We provide cost-effective, high-performance infrastructure for AI start-ups and large enterprise customers. Nscale enables AI-focused companies to achieve superior results by reducing the complexity of AI development. Our GPU cloud bolsters technical capabilities and directly supports strategic business outcomes, including cost management, rapid innovation, and environmental responsibility. We thrive on a culture of relentless innovation, ownership, and accountability, where every team member takes pride in their work and drives it with excellence and urgency. As an Nscaler, you’ll build trust through openness and transparency, where everyone is inspired to do their best work. If you join our team, you’ll be contributing to building the technology that powers the future. About The Role The Site Security Manager is responsible for the daily management of all physical security operations at the Data Centre. The role ensures that security services delivered by Securitas meet Nscale standards while maintaining a secure environment for staff, contractors, visitors and customers. The Site Security Manager oversees reception security, visitor management, access control, security patrols and operational readiness while acting as the primary point of contact for day-to-day site security matters. Responsibilities: Site Security Management • Manage all physical security operations at DC. • Ensure security standards are consistently maintained. • Conduct routine inspections of security controls. • Ensure compliance with site procedures. Contract Management • Manage the Securitas security contract. • Supervise daily performance of security officers. • Conduct performance reviews and service meetings. • Ensure contractual service levels are achieved. Reception Operations • Ensure reception operates professionally and securely. • Oversee visitor registration and identity verification. • Ensure visitor escorts are available where required. • Maintain visitor records. Visitor Management • Manage all daytime visitor activity. • Ensure customer visits are coordinated securely. • Ensure contractor access follows approved procedures. • Support VIP visits and government delegations. Physical Security • Ensure CCTV, access control and intrusion detection systems remain operational. • Conduct physical security inspections. • Report defects and coordinate remedial actions. • Verify perimeter security standards. Security Operations • Coordinate responses to on-site security incidents. • Liaise with emergency services. • Conduct investigations into physical security events. • Produce incident reports. Compliance • Support ISO 27001 and SOC 2 audits. • Maintain site security documentation. • Support customer security audits. • Ensure compliance with customer physical security standards. Key Relationships • Internal VP Global Physical and Data Centre Security • Data Centre Operations • Engineering • Facilities • Compliance • Information Security • Securitas • Customers • Emergency Services • Security vendors • Contractors About You Required • Experience managing contract security teams. • Experience within data centres or critical infrastructure. • Knowledge of physical security systems. • Experience managing visitors and customer security requirements. • Strong leadership skills. Desirable • Experience supervising reception operations. • Genetec experience. • Security auditing experience. • ISO 27001 or SOC 2 knowledge. • Experience supporting government or hyperscale customer environments. Skills • Leadership • Customer service • Communication • Contractor management • Incident management • Decision making • Attention to detail • Report writing What We Can Offer You You’ll have the opportunity to help shape the operating standards behind a next-generation AI cloud platform, working on complex infrastructure challenges with real ownership and impact. This is a chance to play a meaningful role in scaling high-performance, sustainable data centre operations in a fast-moving environment. Equal Opportunities Statement We strongly encourage applications from people of colour, the LGBTQ+ community, people with disabilities, neurodivergent people, parents, carers, and people from lower socio-economic backgrounds. If there’s anything we can do to accommodate your specific situation, please let us know. The responsibilities outlined in this job description are not exhaustive and are intended to provide a general overview of the position. The employee may be required to perform additional duties, tasks, and responsibilities as assigned by management, consistent with the skills and qualifications required for the role. For information on how Nscale handles candidate personal data, please see our Employee & Candidate Privacy Notice: Here. Nscale does not accept unsolicited candidate submissions from recruitment agencies.