Job Description:

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