Senior / 3rd Line IT Engineer - Infrastructure & Cyber Security
We are seeking a Senior / 3rd Line IT Engineer specialising in Infrastructure and Cyber Security to join a technically focused team. This is a hands-on role for an experienced professional who can provide advanced technical support, maintain secure and resilient infrastructure, and lead the resolution of complex incidents and problems. You will work across server, network, cloud and security technologies, contributing to the stability, performance and continual improvement of core IT services.
Key responsibilities will include diagnosing and resolving escalated 3rd line incidents, managing Windows Server and virtualised environments, supporting Microsoft 365 and cloud platforms, and administering networking, firewalls, backups and storage solutions. You will monitor infrastructure and security alerts, investigate vulnerabilities, implement remediation plans and support identity and access management controls. The role will also involve maintaining technical documentation, developing standards and procedures, assisting with infrastructure projects, and working with internal and external stakeholders to deliver secure and effective solutions. You may also be expected to mentor junior engineers and contribute to out-of-hours support or an on-call rota where required.
Applicants should have substantial experience in a senior infrastructure or 3rd line support role, together with strong knowledge of Microsoft technologies, Active Directory, Microsoft 365, virtualisation and enterprise networking. Experience with cloud services, endpoint security, firewalls, backup platforms, vulnerability management and security monitoring is highly desirable. Relevant certifications in infrastructure, networking or cyber security would be advantageous. You will need excellent analytical and problem-solving skills, a methodical approach to incident management, and the ability to explain technical matters clearly to both technical and non-technical audiences. A proactive mindset, strong attention to detail and a commitment to maintaining high security standards are essential.
Senior / 3rd Line IT Engineer - Infrastructure & Cyber Security
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