System Administrator

Astreya; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

Astreya in London, United Kingdom, seeks a System Administrator to support and maintain large-scale systems for building management and physical security operations. The role is ticket-based, with procedural work through tickets to resolution.

Responsibilities include monitoring ticket queues and communications channels, managing systems and infrastructure, logging ticket metadata, and coordinating with internal and third-party teams. On-call and after-hours support are required.

Qualifications

• Bachelor’s degree in a related field with 2–5 years’ experience or equivalent.
• Strong internal/external relationship building and judgment within procedures.
• Experience building and managing servers; strong networking troubleshooting.
• Familiar with ticket systems and following processes; good writing skills.
• Windows Server (AZ-800/801) certification a plus; Linux/Windows patching
• Remote access via SSH/RDP; VDI experience with Horizon/Citrix is beneficial.
• Automation scripting experience is preferred; Linux certs a plus.

Responsibilities

• Monitor ticket queue and IM channels.
• Monitor and participate in managing systems and infrastructure.
• Accurately record metadata related to tickets in internal tools.
• Resolve troubleshooting tickets with internal and third-party teams.
• Maintain professional communication with third parties per vendor code of conduct.
• Provide out-of-hours support for scheduled upgrades.
• Provide 24/7 on-call support for critical outages.
• Other duties as required.

Skills

Bachelor’s degree

Server admin

Networking

Troubleshooting

Ticket systems

Communication

AZ-800/801

Windows/Linux

Remote access

VDI Horizon/Citrix

Automation scripting

Linux cert

3rd party coordination

Education

Bachelor’s degree

Tools

Horizon/Citrix

Job description

The System Administrator is expected to facilitate operational support to and on behalf of the assigned team. The assigned team supports and maintains a variety of large and global scale systems for building management and physical security operations. The skill set required is industry typical 'systems administration', including working knowledge of various networking systems. Work is ticket based, and the team would be expected to procedurally work through tickets (submitted via a template) to resolution.

Scope:

• Applies company policies and procedures to resolve a variety of issues
• Works on problems of moderate scope
• Receives general instructions on routine work and detailed instructions on new projects

Your Roles and 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, but not limited to, CTI (category, type and item), 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

Required Qualifications/Skills:

• Bachelor’s degree (B.S/B.A) from four-college or university and 2 to 5 years’ related experience and/or training; or equivalent combination of education and experience
• Builds productive internal and external working relationships
• Exercises judgment within defined procedures and practices to determine appropriate action
• Comfortable with building and managing various servers
• Experience with networking management, configurations and changes
• Experience with systems and networking troubleshooting to identify the root cause and fixes
• Knowledgeable about ticket systems and follow processes
• Good communication and writing skills
• Windows Server Hybrid admin certification (AZ-800 and AZ-801) is a huge plus
• WindowsOS VM, Linux experience is a plus
• Focus on projects, experience patching Linux & windows
• Remote via SSH, RDP
• JAMF not needed
• VDI is big plus (Horizon, Citrix) Virtual Desktop infrastructure
• Linux Cert is a plus

Preferred Qualifications:

• Automation and scripting experience

Physical Demand & Work Environment:

• Must have the ability to perform office-related tasks which may include prolonged sitting or standing
• Must have the ability to move from place to place within an office environment
• Must be able to use a computer
• Must have the ability to communicate effectively
• Some positions may require occasional repetitive motion or movements of the wrists, hands, and/or fingers