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Senior Infrastructure & Network Systems Engineer Galldris Group Location: Head Office, Enfield, EN3 7FJ An exciting opportunity has arisen for a Senior Infrastructure & Network Systems Engineer to join our Head Office team. The purpose of the role is to secure design and operation of hybrid on-prem and cloud infrastructure. Front-facing technical engineer supporting internal work collogues, management, and remote office. Key Responsibilities Infrastructure & Platforms • Linux and Windows Server 2016+ administration, • Proxmox virtualization, • Reverse Proxy Web Server Management, • Application Proxy Gateway, • Cloud and hybrid server environments, • Knowledgeable ITIL frameworks, MDM platforms Microsoft & Web Services • Microsoft 365 and Exchange (Online / Hybrid), • IIS and secure web server hosting, • Identity integration (Knox, Intune, Azure AD / Entra ID) Storage & Data • TrueNAS administration, • File services (SMB, NFS, iSCSI), • Backup and recovery – Veeam systems, Identity, Certificates & Policy, • RADIUS authentication and policy generation, • PKI and server certificate management, • Cross-platform identity integration Networking • Network design and segmentation, • Cisco and Ubiquiti hardware, • VPNs, secure connectivity, and access control Kubernetes & Containers • Kubernetes cluster operations, • Persistent storage integration, • Certificate-based authentication Cybersecurity Knowledge • Zero Trust and defense-in-depth principles, • Network and identity security, Server and platform hardening, • Monitoring, logging, and incident response, • ISO 27001 aligned practices Certifications & Skills • CompTIA Network+, • Vendor-agnostic networking, • Linux, Windows, M365, Cloud, • Customer-facing engineering (CE+) Interested applicants must be eligible to work legally in the UK. Should you feel you have what it takes to be successful in this role, then we would love to hear from you. Employee referral scheme - refer a friend or family member to work for Galldris. Galldris is an Equal Opportunities employer and does not discriminate against any protected characteristic. Please note: We are not using recruitment agencies for this role. In the event of speculative CV submissions, no fees will be applicable