Junior Systems & Network Administrator (On-Call)

Astreya; Greater London; On-site; GBP 32,000 - 52,000; Full time

Job summary

Astreya in the United Kingdom seeks a System Administrator to support and maintain large-scale systems for building management and physical security. You will work in a ticket-based environment, monitor queues and infrastructure, and resolve issues following established templates and processes.

The role emphasizes collaboration with internal teams and third parties, documenting outages, providing after-hours support for upgrades, and maintaining professional communications while upholding client

Qualifications

• Bachelor’s degree or equivalent with 2–5 years of related experience.
• Ability to build relationships and exercise sound judgment.
• Experience with servers, networking, and troubleshooting.

Responsibilities

• Monitor ticket queue and IM channels.
• Manage systems and infrastructure.
• Record metadata for tickets and outages in internal tools.
• Troubleshoot and resolve issues with internal and third-party teams.
• Coordinate with 3rd parties and represent the team professionally.
• Provide after-hours support for upgrades and 24/7 on-call outages.

Skills

Server management

Networking

Ticketing systems

Technical writing

On-call support

Education

Bachelor’s degree in a related field

Job description

Astreya in the United Kingdom seeks a System Administrator to support and maintain large-scale systems for building management and physical security. You will work in a ticket-based environment, monitor queues and infrastructure, and resolve issues following established templates and processes.

The role emphasizes collaboration with internal teams and third parties, documenting outages, providing after-hours support for upgrades, and maintaining professional communications while upholding client