Senior Infrastructure Systems Administrator
About The Position
Event Citadel is seeking a Senior Infrastructure Systems Administrator to support and modernize a complex infrastructure environment that includes legacy Solaris systems, Linux and Windows servers, on-prem hardware, SAN/storage platforms, networking/security components, web application infrastructure, and potential cloud modernization initiatives. This role is ideal for a senior Level 2 / Level 3 infrastructure professional who is comfortable supporting mission-critical legacy systems while helping the organization prepare for future modernization. The successful candidate will provide hands-on infrastructure support, troubleshoot production issues, assist with storage and capacity planning, support server and network infrastructure, and help reduce dependency on a small number of senior technical resources.
Requirements
- 7+ years of systems administration, infrastructure engineering, or similar experience.
- Strong experience with Unix/Linux systems administration.
- Experience supporting legacy Solaris environments, ideally Solaris 10 and/or Solaris 11.
- Experience with on-prem server infrastructure.
- Experience with SAN/storage administration, capacity monitoring, or storage troubleshooting.
- Strong troubleshooting and root-cause analysis skills.
- Working knowledge of networking fundamentals, including TCP/IP, DNS, VPNs, routing, switching, and firewalls.
- Experience supporting production systems in a mission-critical environment.
- Ability to work independently and operate as a senior escalation resource.
- Comfortable supporting both legacy systems and modernization initiatives.
- Ability to work onsite as needed for hardware, data center, or infrastructure support.
Nice To Haves
- VMware administration experience.
- AWS or Azure exposure.
- Apache/Tomcat or web application infrastructure support.
- PostgreSQL or relational database infrastructure support.
- Scripting experience with Bash, PowerShell, Python, or similar.
- Monitoring tools such as Grafana, Prometheus, Nagios, Zabbix, SolarWinds, or similar.
- Experience with hardware refresh projects.
- Experience migrating legacy systems to Linux, cloud, or modern platforms.
- Experience supporting event technology, registration platforms, analytics dashboards, or high-availability client-facing systems.
- Experience working in environments with aging infrastructure, legacy systems, and modernization roadmaps.
Responsibilities
- Support and maintain legacy Solaris 10 / Solaris 11 production environments.
- Administer and troubleshoot Linux and Windows server systems.
- Support on-prem infrastructure, including servers, switches, SAN/storage devices, and related hardware.
- Assist with storage capacity planning, monitoring, troubleshooting, and future storage modernization.
- Support Linux and web server modernization initiatives.
- Provide Level 2 / Level 3 escalation support for infrastructure, network/security, and systems issues.
- Help maintain and improve monitoring, alerting, documentation, and operational procedures.
- Support networking and security infrastructure, including IP management, switches, VPN/firewall-related coordination, and secure access.
- Participate in future infrastructure planning, including potential hardware refresh, AWS/cloud migration, or hybrid infrastructure modernization.
- Support production availability for mission-critical Event Citadel systems and client-facing platforms.
- Participate in after-hours maintenance, urgent production support, and on-call escalation as needed.
- Serve as a trusted technical backup to the IT Ops leadership team when senior staff are traveling or supporting live events.
- Work independently with minimal supervision while communicating clearly with technical and non-technical stakeholders.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
