Salary: £59,000 - 99,000 per year Requirements: Experience operating at Senior or Lead IT Security Engineer level Deep hands-on expertise in network, endpoint, and email security Strong Azure security experience, including IAM and network controls Background securing distributed, multi-site environments Experience with SIEM, vulnerability management, and threat intelligence tooling Ability to translate security strategy into practical, scalable solutions Strong communication and stakeholder engagement skills Responsibilities: Architect and implement network security (firewalls, IDS/IPS, segmentation) Own email security controls including phishing protection, encryption, and DLP Design and deploy endpoint security across corporate, retail, and manufacturing devices Lead Azure security architecture covering identity, network, data, and compliance Define and enforce IT security policies and standards Drive vulnerability management and remediation across the estate Lead and support incident response for infrastructure-related security events Continuously evolve the security posture in line with emerging threats Technologies: Architect Azure Cloud IAM Support Network Security More: At Holland & Barrett, were undergoing a digital transformation that has created a highly distributed IT estate spanning corporate offices, retail stores, manufacturing sites, and cloud environments. Our mission involves securing this landscape at scale, and we are looking for a dedicated Senior IT Security Engineer to join our dynamic team. We offer a flexible working environment and a culture that supports personal and professional growth. The position is based in London and offers various benefits, including health plans, discounts, and learning opportunities. If youre ready to tackle complex challenges and make a substantial impact, we welcome your application. last updated 6 week of 2026