Global Systems Administrator — 24/7 On-Call & Hybrid IT

Astreya; Cupertino (CA); On-site; USD 110,000 - 160,000; Full time

Job summary

Astreya in Cupertino is seeking a System Administrator to support and maintain large, global-scale building management and physical security systems. The role involves ticket-based work, troubleshooting, and collaboration with internal and third-party teams.

You will monitor queues, manage infrastructure, document metadata, and provide after-hours on-call support for outages, with a focus on Windows and Linux servers and network configurations.

Qualifications

• Bachelor's degree from an accredited college or university, with 2–5 years of related experience.
• Experience with networking management and troubleshooting to identify root causes.
• Experience with ticketing systems and standard processes.
• Strong communication and writing skills.
• Eligible for Windows Server Hybrid certifications (AZ-800/AZ-801) a plus.

Responsibilities

• Monitor ticket queue and IM channels
• Monitor and participate in managing systems and infrastructure
• Accurately record all metadata related to tickets on internal tools, including CTI, outage resolution time, IM transcripts, postmortems, etc.
• Engage in managing and resolving troubleshooting tickets from internal teams and third-party teams, engaging other teams as necessary
• Maintain contact with 3rd parties and help to represent the assigned team in a professional and courteous manner which complies with clients' vendor code of conduct.
• Provide out of business hours support for any scheduled time sensitive upgrades
• Provide 24/7 on-call support for critical system's outages
• Other duties as required. This list is not meant to be a comprehensive inventory of all responsibilities assigned to this position

Skills

Networking management

System troubleshooting

Remote access (SSH/RDP)

Windows/Linux server administration

Ticketing & incident response

Education

Bachelor's degree (B.S./B.A.)

Windows Server Hybrid admin certification AZ-800 & AZ-801

Linux certification (a plus)

Tools

VMware Horizon

Citrix

Job description

Astreya in Cupertino is seeking a System Administrator to support and maintain large, global-scale building management and physical security systems. The role involves ticket-based work, troubleshooting, and collaboration with internal and third-party teams.

You will monitor queues, manage infrastructure, document metadata, and provide after-hours on-call support for outages, with a focus on Windows and Linux servers and network configurations.