Senior Systems Administrator

Senior Systems Administrator Role Overview We are seeking an experienced Systems Administrator. This senior-level role is responsible for the design, implementation, and ongoing management of our cloud infrastructure and enterprise network environments. Cloud Infrastructure Management * Design, deploy and manage cloud environments across Azure and Oracle Cloud platforms (or similar is fine) as the Senior Systems Administrator * Administer cloud-native services including virtual machines, containers, serverless functions and managed databases * Implement and maintain infrastructure-as-code (IaC) Network Administration * Design, implement and maintain enterprise network infrastructure including LAN, WAN and (site-to-site) VPNs * Administer and configure firewalls, routers, switches, and load balancers (Cisco, Sophos, Palo Alto or similar) * Manage DNS, DHCP and IP address management (IPAM) across all environments * Oversee network performance monitoring, troubleshooting and capacity planning * Manage BGP, OSPF and VLAN configurations in complex multi-site environments * Implement and maintain network segmentation, zero-trust architecture principles and micro-segmentation Automation & DevOps Integration * Develop and maintain automation scripts using PowerShell, Python or Bash to streamline operations * Contribute to GitOps practices and maintain version-controlled infrastructure configurations * Implement monitoring and alerting solutions (e.g. Datadog, Prometheus, Grafana) Essential Requirements * Hands-on experience as a Systems Administrator working heavily with cloud and network administration * Deep expertise in at least one major cloud platform * Strong knowledge of enterprise networking protocols * Experience with firewall administration and network security policy management Senior Systems Administrator