IT System Engineer – (Patch Management) Location: London – E16, UK (Hybrid – Office, Customer Sites & Remote) Employment Type: Full-Time Reports To: Lead System Engineer
Role Overview We are seeking a skilled and proactive IT System Engineer to join our London-based infrastructure team. The successful candidate will be responsible for the delivery of patch management services and the hands-on installation of updates, upgrades, patches, and hotfixes across enterprise environments. This role is both customer-facing and internally focused, requiring work at our London office, remote support, and on-site visits to Network Rail & TfL customer locations across Greater London and surrounding areas. The position requires strong technical capability, excellent documentation skills, and a professional approach when operating within client environments.
Key Responsibilities Patch & Update Management – Plan, test, schedule and deploy patches, updates, service packs, upgrades, and hotfixes. – Manage structured patch cycles (monthly, emergency, zero-day response). – Perform pre-deployment testing and post-implementation testing & validation. – Maintain patch compliance reporting and remediation tracking. – Ensure minimal disruption to production systems. OS Infrastructure – Updates to various Linux distributions, Ubuntu, Debian, Red Hat etc. – Updates to Windows Server (2016/2019/2022) & Windows 10/11 environments. – Configure and administer WSUS. Network & Security Infrastructure – Deploy firmware updates and patches for: – Cisco routers and switches – Cisco firewalls – Juniper firewalls – Perform configuration backups and validation before changes. – Assist with vulnerability remediation and security audits. Virtualisation – Manage patching and lifecycle updates for VMware environments. – Maintain and upgrade VMware ESXi hosts and vCenter. – Ensure VM availability during maintenance cycles. Customer Engagement – Deliver on-site patching and maintenance at customer locations. – Provide clear communication before, during, and after maintenance windows. – Produce change documentation and implementation reports. – Work within ITIL change control processes. Required Skills & Experience Essential – 5+ years’ experience in infrastructure or systems engineering roles. – Experience delivering structured patch management processes. – Knowledge of change management and maintenance windows. – Excellent troubleshooting and root-cause analysis skills. – Strong hands-on experience with some, or all of the following: – Windows Server & Windows Workstation environments – Linux Operating Systems – WSUS administration – Cisco rout ers & switches – Cisco and Juniper firewalls – VMware vSphere ( ESXi, vCenter, vLCM) – HPE & Dell server firmware Desirable – Familiarity with backup solutions. – Exposure to automation (PowerShell scripting). – ITIL Foundation certification. – Vendor certifications (Microsoft, Cisco, VMware, Juniper). – Experience working within Network Rail or Transport for London industry sectors.
Personal Attributes – Professional and customer focused. – Highly organised with strong documentation skills. – Comfortable working out-of-hours during maintenance windows. – Strong communication skills (written and verbal).
Working Conditions – Hybrid working model (London office, remote, and customer sites). – Occasional evening or night work during planned maintenance windows. – Travel within Greater London and surrounding areas.
What We Offer – Competitive London-based salary. – Company pension scheme. – 26 days Holiday plus Bank Holidays – Employee portal – Professional development and certification support. – Exposure to diverse enterprise customer environments. – Opportunity to work across multi-vendor infrastructure technologies.