IT Infrastructure & Cyber Security Engineer - 3rd Line, Cloud & AI

Reference: jut79kr04kxfnjyhdjm7

We are seeking an experienced IT Infrastructure & Cyber Security Engineer to provide expert 3rd-line support across a modern, hybrid technology environment. This is a hands-on role for someone who can resolve complex infrastructure issues, strengthen cyber security controls and contribute to the design and delivery of resilient cloud services. You will act as a senior escalation point for technical incidents, ensuring problems are investigated thoroughly, root causes are identified and effective solutions are implemented.

Your responsibilities will include administering and supporting Microsoft-based infrastructure, including Windows Server, Active Directory, Group Policy, Microsoft 365, Azure and endpoint management platforms. You will manage virtualisation, networking, backups, monitoring and disaster recovery technologies, while maintaining high standards of availability, performance and security. The role will also involve vulnerability management, security incident response, access control, patching, threat detection and the continuous improvement of policies, procedures and technical safeguards. You will support the secure adoption of cloud technologies and assess how artificial intelligence and automation can improve operational efficiency, monitoring and service delivery.

You will work closely with internal teams, suppliers and stakeholders to deliver infrastructure projects, technical upgrades and service improvements. Clear documentation, accurate change control and effective communication will be essential, as will the ability to prioritise work in a busy environment and explain complex technical issues to non-specialist audiences. Applicants should have substantial experience in 3rd-line infrastructure or cyber security support, with strong knowledge of Microsoft technologies, Azure, networking, security principles and IT service management practices. Relevant certifications or demonstrable expertise in areas such as Microsoft, Azure, cyber security, networking or ITIL would be advantageous. A proactive, analytical approach and a commitment to continual learning are essential, particularly as cloud services, automation and AI-enabled technologies continue to evolve.

COMPETITIVE SALARY
Added 25/08/2026
Reference: jut79kr04kxfnjyhdjm7

IT Infrastructure & Cyber Security Engineer - 3rd Line, Cloud & AI

Colchester, England, United Kingdom Permanent Security Engineer

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