Infrastructure Assistant Manager

Oliver James has partnered with a global financial services organisation with a long-established presence in the City of London to recruit an IT Infrastructure Assistant Manager on an initial 12-month fixed-term contract, with potential for a permanent role for the right candidate. This role is well suited to an experienced infrastructure engineer looking to step into a senior, hands-on role with real accountability and exposure to governance, audit, and enterprise-scale technology.

Key Responsibilities include:

• Own and operate infrastructure vulnerability and patch management processes across servers, virtualisation, and endpoints, ensuring remediation aligns with security policies and SLAs.
• Collaborate closely with Security Operations teams to assess vulnerabilities, prioritise remediation, and support risk acceptance or exception processes where required.
• Plan, test, and implement patches and remediation activities through formal change and release management.
• Design, maintain, and enhance automated patching and remediation using tools such as SCCM/ConfigMgr, Intune, and PowerShell.
• Manage and support Microsoft server platforms including Windows Server, Active Directory, Group Policy, DNS, DHCP, PKI, Exchange, and Microsoft 365.
• Lead VMware estate management, including cluster design, lifecycle management, availability, and performance.

Essential Skills:

• Experience in IT infrastructure or systems engineering roles, ideally within a regulated environment such as banking or financial services.
• Strong hands-on experience with enterprise vulnerability and patch management tools (e.g. SCCM/ConfigMgr, Tenable, Runecast, PatchMyPC).
• In-depth experience across Microsoft Server technologies, Active Directory, Group Policy, Exchange, Microsoft 365, and VMware vSphere.
• Proven expertise in vulnerability remediation, security baselines, endpoint hardening, and identity/access management.
• Strong PowerShell scripting and automation capability.
• Experience operating within formal change, release, and incident management frameworks (ITIL).
• Ability to lead root cause analysis and deliver permanent fixes for complex infrastructure issues.
• Microsoft certifications, VMware certifications, and ITIL Foundation (or equivalent experience).

Desirable Skills:

• Experience with hybrid cloud environments and identity platforms (Azure, Microsoft Entra).
• Security certifications such as Security+ or CISSP.
• Experience with PAM solutions (e.g. CyberArk), SSO/MFA platforms, and PKI/SSL management.
• Practical Red Hat Linux administration experience.
• Exposure to audit, regulatory, and compliance-driven environments.
• Experience driving automation, process improvement, and operational best practices.

Salary – Up to £75k per annum

Location – City of London (2 days per week onsite)