Site Security Manager

Location: London

Nebius is looking for a Site Security Manager to lead physical security operations for the Nebius London office.You will own the day-to-day security posture of the site, protect employees, visitors, assets and infrastructure, and make sure local practices are robust, compliant and aligned with Nebius corporate standards. This is a hands-on leadership role for someone who can set clear processes, manage vendors and front-desk security personnel, and respond calmly and decisively when incidents occur.

You’re welcome to work in our offices in London.

Your responsibilities will include: 

• Lead day-to-day physical security operations at the Nebius London office, maintaining a safe, secure and professional environment for employees, visitors and company assets. 

• Develop,implement and continuously improve site-specific security policies, procedures and training for the London office, aligned with Nebius corporate standards and applicable UK regulatory requirements. 

• Monitor and manage CCTV, alarm systems and access-control processes, ensuring reliable operation, clear escalationroutes and timely response to potential threats. 

• Conduct regular risk assessments, sitereviews and physical-security checks; identify vulnerabilities and drive corrective actions to completion. 

• Serve as the primary local liaison with UK law enforcement, emergency services, building management and other relevant authorities during incidents,emergencies or crises. 

• Lead investigations into security breaches and incidents, document findings clearly, and implement corrective and preventive actions.

• Manage relationships with external security vendors and contractors, setting expectations and ensuring high-quality service delivery.

• Direct, brief and coach front-desk security personnel on-site so that security standards are applied consistently and professionally.

• Partner with Facilities, IT, People, Legal/Complianceand site leadership to keep local practices aligned with company-wide security, safety and business-continuity expectations. 

We expect you to have: 

• Proven experience managing physical security operations, preferably in large corporate, technology, critical-infrastructure or governmental environments. 

• Strong leadership,communication and interpersonal skills, with the ability to manage vendors, contractors and diverse on-site teams. 

• Solid knowledge ofphysical-security principles, risk management, emergency response and applicable UK regulatory requirements. 

• Hands-on experience with security technologies, including surveillance systems, CCTV, alarm systems and access-control platforms. 

• Excellent analytical and problem-solving ability, with the judgment to assess risk, prioritize remediation and implement effective solutions.

• Calm, credible decision-making under pressure, especially during emergencies, incidents or sensitive investigations. 

• Clear documentation and reporting skills, including incident reports, risk summaries ,findings and corrective-action plans. 

• Good communication skills in English

Benefits & Perks:

• Competitive compensation

• Career growth and learning opportunities

• Flexibility and ownership

• Collaborative and innovative culture

• Opportunity to work on impactful AI projects

• International environment and talented teams