Infrastructure & Cyber Security Specialist

• Manage and enhance cyber security controls across our IT infrastructure
• Monitor, investigate and respond to security incidents and threats
• Support the implementation and management of SIEM, endpoint security and monitoring solutions
• Conduct vulnerability assessments and coordinate remediation activities
• Implement and maintain Microsoft security technologies, including Entra ID, Defender and Purview
• Develop and enforce security policies, standards and best practices
• Support internal and external audits, compliance activities and security assessments
• Ensure alignment with recognised security frameworks and regulatory requirements
• Work with internal stakeholders and third-party providers to improve our overall security posture
• Assist with business continuity, disaster recovery and risk management initiatives
• Identify opportunities to continuously improve security processes and controls

Technologies:

• Azure
• Support
• Microsoft 365
• Security
• Office 365
• Cloud

• Minimum 3 years experience in Cyber Security, Infrastructure Security or Information Security
• Hands-on experience with Microsoft 365 Security, Microsoft Entra ID, Microsoft Defender, Microsoft Purview, Intune and Azure Security
• Experience with incident response, threat detection and remediation
• Knowledge of SIEM technologies and security monitoring
• Vulnerability management experience and familiarity with related tooling
• Understanding of security frameworks and standards such as NIST, ISO 27001, Cyber Essentials or NIS2
• Experience supporting audits, compliance and governance activities
• Strong analytical and problem-solving skills
• Excellent communication skills and ability to engage technical and non-technical stakeholders
• Applicants must have the right to work in the UK; sponsorship is not available
• Desirable: Microsoft Sentinel experience
• Desirable: DLP (Data Loss Prevention) and data classification experience
• Desirable: Experience in manufacturing, industrial or operational technology (OT) environments
• Desirable: Relevant certifications such as Security+, SC-200, SC-300, AZ-500, CISSP, CISM or similar

We are recruiting an experienced IT Infrastructure Security Specialist to help maintain, enhance and evolve our cyber security posture in a varied role spanning security operations, infrastructure security, compliance, incident response and improvement projects. This is a full-time, permanent position paying up to £55,000 depending on experience. The role is predominantly remote within the UK, with occasional travel to our Essex office. We offer 25 days holiday plus bank holidays, a company pension scheme, life assurance, company sick pay, an Employee Assistance Programme, ongoing training and professional development, and the opportunity to work with modern security technologies and influence cyber security strategy in a supportive, collaborative IT environment. We welcome applications from candidates of all backgrounds and base selection on skills, experience and suitability. Adecco acts as an employment agency for permanent recruitment and an employment business for temporary workers; the Adecco Group UK & Ireland is an equal opportunities employer.

last updated 43 week of 2026