Salary: £42,000 - 48,000 per year Requirements: Strong understanding of TCP/IP networking, routing, switching and VLAN segmentation Experience configuring firewalls and secure remote access (VPN, port forwarding, NAT policies) Advanced Windows administration experience Experience managing Microsoft 365 / hybrid environments Good knowledge of VOIP telephony systems Virtualisation experience (VMware or Hyper-V) Strong troubleshooting methodology across network, system and application layers Understanding of cybersecurity principles and secure system design Experience with Enterprise level IP-based CCTV, Access Control & Intercom Systems (highly desirable) Knowledge of ONVIF, SIP, RTSP and related protocols (highly desirable) Experience with PowerShell scripting and task automation (highly desirable) Familiarity with backup & disaster recovery solutions (highly desirable) Experience within the electronic security integration sector (highly desirable) Analytical and methodical in approach Strong documentation discipline Comfortable working at both architectural and hands-on levels Proactive and solutions-driven Able to manage multiple technical streams simultaneously Responsibilities: Pre-Build configuration of IP-based CCTV, Access Control, Intruder and Intercom platforms prior to deployment Configure network topology including VLAN segmentation, firewall rules, routing, NAT and VPN access Implement secure remote access solutions and hardened configurations Validate firmware, patch levels and cybersecurity posture prior to site deployment Test system resilience, redundancy, failover and storage performance Pre-stage cloud-connected security platforms and hybrid integrations Produce configuration documentation, network diagrams and deployment packs Evaluate and benchmark new hardware, VMS platforms and access control technologies Provide Tier 3 technical escalation support to field engineers Administer and optimise internal infrastructure (Windows Server, Active Directory, DNS, DHCP, Group Policy) Manage Microsoft 365 tenant including SharePoint, Exchange Online, conditional access and security policies Support hybrid identity (on-prem AD Azure AD / Entra ID) Maintain and optimise virtualised environments (VMware / Hyper-V) Manage backup solutions, disaster recovery strategy and business continuity planning Maintain core network infrastructure (Layer 2/3 switching, VLANs, trunking, firewall policy, VPN, SD-WAN where applicable) Oversee endpoint provisioning, MDM policies, and lifecycle management Implement cybersecurity best practices including MFA, least-privilege access, system hardening and vulnerability remediation Lead internal IT improvement projects from design to deployment Administer internal helpdesk and documentation systems Provide 2nd and 3rd line technical support to engineers and key customers Assist with website infrastructure and hosting environments Manage and optimise company digital platforms and social channels Technologies: Active Directory Azure Cloud Firewall Firmware Hardware Hyper-V Support Microsoft 365 NAT Network PowerShell Security SharePoint TCP/IP VPN VMware Windows Office 365 More: We are seeking a technically advanced IT Infrastructure & Support Engineer to take ownership of the configuration, validation, and optimisation of integrated IP-based security systems prior to deployment. Our team is dedicated to ensuring that security systems are secure, scalable, and deployment-ready. We offer a competitive salary of £42,000 to £48,000 per year, along with benefits such as a company pension, cycle to work scheme, and on-site parking. This role provides genuine technical ownership of pre-deployment security builds and an opportunity to influence infrastructure standards and cybersecurity posture, while working closely with emerging IP security and hybrid cloud technologies. last updated 18 week of 2026