Senior Infrastructure & Network Systems Engineer
hace 3 días
Enfield
Galldris Group Location: Enfield, Middlesex, EN3 7FJ An exciting opportunity has arisen for a Senior Infrastructure & Network Systems Engineer to join our Head Office team based in Enfield, Middlesex. The Senior Infrastructure & Network Systems Engineer will design, operate, and secure a modern hybrid IT environment spanning on‑prem, remote office, and cloud platforms. This is a hands‑on, internal ‑based role suited to someone who enjoys working across multiple technologies while maintaining strong security and reliability standards. • Design, implement, and support Linux and Windows Server environments (Windows Server 2022+)., • Manage and maintain virtualisation platforms, including Proxmox, ensuring high availability and performance., • Administer cloud-hosted infrastructure and integrate on-premises systems with cloud-based identity and access management solutions., • Support and maintain Microsoft 365 and Exchange environments, including both cloud and hybrid deployments., • Deliver and manage secure web services using IIS and associated technologies., • Take ownership of enterprise storage and data services, including TrueNAS environments., • Manage file services, backup solutions, disaster recovery processes, and business continuity requirements., • Ensure data integrity, availability, and recovery capabilities are maintained to a high standard., • Administer authentication, authorisation, and access control solutions across multiple platforms., • Develop and manage RADIUS policies to support secure network access., • Oversee Public Key Infrastructure (PKI) and certificate lifecycle management, ensuring secure certificate-based authentication and encryption practices., • Design, implement, and support secure enterprise networks using Cisco and Ubiquiti technologies., • Configure and maintain VLAN segmentation, VPN connectivity, M-LAG, and LACP solutions., • Troubleshoot complex networking issues and optimise network performance across multiple sites., • Contribute to the development and ongoing enhancement of an in-house Kubernetes platform., • Support containerised workloads, platform services, storage integration, and certificate management within Kubernetes environments., • Collaborate with technical teams to improve scalability, automation, and operational efficiency., • Champion a security-first approach across all infrastructure and network services., • Apply Zero Trust and defence-in-depth security principles throughout the IT estate., • Support ISO 27001-aligned operations and contribute to security hardening, monitoring, vulnerability management, and incident response activities., • Extensive knowledge of Windows Server infrastructure (2022 and later)., • Experience supporting hybrid cloud and Microsoft technology environments., • Strong understanding of networking principles and protocols., • Experience with Cisco and/or Ubiquiti networking technologies., • Knowledge of authentication, identity management, and PKI solutions., • Experience managing enterprise backup and disaster recovery solutions., • Strong troubleshooting and problem-solving skills., • Excellent documentation and technical communication abilities., • CompTIA Network+ or equivalent networking qualification., • Experience with Proxmox virtualisation., • Knowledge of Kubernetes and containerised environments., • Experience working within ISO 27001 or other security-focused frameworks., • Microsoft 365 and Exchange administration experience You will be joining a great team with plenty of ongoing support, training and internal development opportunities; a summary of our benefits include: • 25 days of annual leave plus bank holidays, increasing to 29 days with length of service., • An extra day of annual leave for your birthday., • Access to our Salary Sacrifice Car Scheme., • Access to a range of wellbeing resources., • Access to private medical insurance., • Company life assurance., • Excellent social opportunities with access to Premier League football and The O2 Arena VIP tickets. Interested applicants must be eligible to work legally in the UK. 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. #J-18808-Ljbffr