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Senior IT Security Manager- Interim Role

Positiv+ Cohort

London, England, United KingdomNot specifiedPosted 2026-06-23
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*Interim Role- min 9 months *Competitive Rate 🌟 Senior IT Security Manager We’re looking for an experienced Senior IT Security Manager to take ownership of IT security, compliance, infrastructure operations, and day‑to‑day IT support across a fast‑moving, modern SaaS environment. If you thrive in a hands‑on, high‑impact role that blends strategic security leadership with practical operational delivery, this is an opportunity to shape and elevate the entire security posture of a growing organisation. 🔐 About the Role This is a broad and influential position covering four key areas: 1️⃣ Reactive IT Support (20–25%) You’ll lead the internal IT helpdesk function, ensuring smooth access management, device setup, SaaS administration, and onboarding/offboarding workflows. Expect a mix of predictable tasks and fast‑moving ad‑hoc support. 2️⃣ Security & Compliance (25–30%) You’ll be the guardian of the organisation’s security posture — monitoring controls, managing audits, reviewing vulnerabilities, handling incident response, and driving continuous compliance across frameworks such as ISO27001 and Cyber Essentials. 3️⃣ Infrastructure & Operations (20–25%) You’ll oversee the device fleet, MDM platforms, network and AV equipment, hardware lifecycle, and vendor relationships. This includes provisioning, policy enforcement, and ensuring operational resilience. 4️⃣ Strategic Security Projects (25–30%) You’ll lead long‑term initiatives including security roadmap delivery, policy development, security awareness training, business continuity planning, and vendor risk management. 🧩 What You’ll Be Doing Day‑to‑Day Managing user access, SaaS tools, and device provisioning Monitoring security alerts, email authentication, and vulnerability reports Coordinating incident response and cross‑functional security escalations Maintaining compliance tooling and supporting external audits Overseeing MDM, endpoint protection, and zero‑trust network tooling Running security awareness and phishing simulation programmes Managing vendor risk assessments and tooling renewals Collaborating with People, Finance, Engineering, and leadership teams 🛠️ Tools & Technologies You’ll Work With (Experience with all is not required — but familiarity with similar platforms is ideal.) Identity & access management macOS/Windows MDM platforms Email security and endpoint protection Compliance automation tools SaaS procurement and licence management Cloud platforms and developer tooling Incident management systems Zero‑trust network access solutions 🤝 Who You’ll Work Closely With You’ll partner with: Risk & compliance leadership Data protection and governance teams Engineering and platform security People/HR for onboarding/offboarding Finance for procurement and renewals All staff for IT support and security awareness 🎯 Who We’re Looking For Someone who is: Confident owning both strategic security initiatives and hands‑on IT operations Comfortable context‑switching between long‑term projects and reactive support Experienced in modern SaaS environments and cloud‑first organisations Strong in stakeholder management and cross‑functional communication Passionate about building secure, scalable, user‑friendly systems
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