IT Security Manager

Country: United Kingdom
City: Sheffield
Req : 520142
Job Type: Full Time
Workplace Type: Hybrid
Seniority Level: Mid-Senior Level

At Leviat, you can build a future with a lasting legacy. Help us make great architecture possible. Responsibly and sustainably. For everyone, and with everyone. Because we’re one rich, vibrant global network of insight and expertise with c.3,000 people at c.60 locations globally, we are a global leader in connecting, fixing, lifting and anchoring technology for the construction industry.

Learn more about our business and range of trusted product brands here ().

CRH is the leading provider of building materials solutions that build, connect and improve our world. Employing c.75,800 people at c.3,160 locations in 29 countries, CRH has market leadership positions in both North America and in Europe.

Our project portfolio includes some of the most sustainable and cutting‑edge building projects around the world. Think of the asphalt on the Silverstone Grand Prix Circuit, the Paris Metro Rail project, but also the Louis Vuitton Museum in Paris, parts of the Burj Khalifa, and the Kennedy Space Centre.

The IT Security Manager is responsible for establishing, implementing, and managing the security landscape across the organisation’s global IT environment. This role ensures the protection of infrastructure, cloud platforms, workplace technologies, and enterprise systems while enabling the business to operate securely, efficiently, and without disruption. The role oversees day‑to‑day security operations, continuously identifies and mitigates cyber risks, and leads incident response activities to ensure rapid and effective resolution of threats.

The IT Security Manager ensures compliance with internal policies, audit requirements, and external regulatory standards, embedding security best practices across all technology domains.

• Own and govern the organisation’s security controls across global systems, networks, endpoints and cloud services, ensuring a robust and resilient security posture.
• Lead all IT security operations
  , including real‑time monitoring, threat detection, vulnerability management, and remediation activities to safeguard Leviat’s global technology landscape.
• Build, lead, and develop a high‑performing IT Security team
  , providing strategic direction across cloud, data‑centre and infrastructure environments to ensure alignment with business priorities.
• Oversee and enhance network and network‑security capabilities
  , including firewalls, SD‑WAN, LAN, and associated technologies, ensuring secure, scalable, high‑performance connectivity.
• Manage the full lifecycle of key security tools and services
  , including vulnerability management platforms, EDR, proxy services, SIEM operations, email security, cloud‑security tooling and security incident workflows.
• Design, implement, and continuously improve security protocols, standards, and procedures
  , ensuring consistent adoption across all technology domains.
• Partner with SOC teams and Managed Security Service Providers (MSSPs) to manage security operations, elevate critical issues, and ensure high‑quality service delivery from external suppliers.
• Embed security architecture and risk assessments into all major IT programmes, projects, and technology decisions to ensure secure‑by‑design outcomes.
• Lead and champion organisation‑wide security awareness and onboarding programmes
  , ensuring employees understand their responsibilities and contribute to a strong security culture.

• Internal
  • Business key users
  • Infrastructure Manager
  • Application Manager
  • Project Managers
  • Infrastructure & Operations Teams
  • Internal Auditors
• External
  • Software vendors (various)
  • Software & professional service providers
  • User Groups
  • External Auditors

• Drive for Results – consistently focused on delivering successful outcomes and achieving high standards of performance.
• Resilient – remains effective under pressure, overcoming challenges and obstacles with determination and composure.
• Detail‑Oriented – demonstrates accuracy, structure and clarity in thinking, planning and execution.
• Flexible – able to adapt quickly to…