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Senior IT Security Manager- Interim Role

Posted 14 days ago

OfficeLondon, England, United KingdomSE

*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

Job details
Workplace
Office
Location
London, England, United Kingdom
Experience
SE
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Positiv+ Cohort
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Positiv Cohort delivers complex Defence and Security capability at pace, combining engineering expertise, secure programme delivery, governance and assurance.

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