We are Jones Knowles Ritchie

We are a branding business.

We inspire people and brands to be their true selves.

We transform legacy brands, and we build the brands of the future.

We make brands distinctive across the entire consumer experience.

We look for brave characters, tenacious spirits, and unlike-minded individuals.

But that's us. Now tell us about you…

We are looking for an experienced and skilled Systems Administrator to join our London IT team. As a Systems Administrator, you will work closely with the IT Manager to maintain and support our on-premise and cloud infrastructure. Your primary responsibilities will include daily maintenance and monitoring of all IT services, ensuring their security, availability, and efficiency.

Your responsibilities will include:

Infrastructure Maintenance

• Supporting 160+ users in the London office (95% MacOS)
• Perform daily maintenance of on-premise and cloud infrastructure, ensuring they are up-to-date, secure, and efficient.
• Monitor system performance, investigate alerts, and address any issues promptly.
• Manage and configure enterprise software and hardware.
• Ensure proper resource and capacity management, redundancy, and backup for VMware ESXi.
• Optimize WAN, LAN, and WiFi networks for bandwidth, security, redundancy, and coverage.
• Maintain storage systems, both on-premise and in the cloud, ensuring capacity, redundancy, backup, and speed.
• Ensure accessibility, security, and integration of cloud services such as Jamf, Intune, Okta, Office 365, Adobe Cloud, Slack, Zoom, Egnyte, Automox, Tenable, AVG, Digital Ocean and more.
  

Business Continuity

• Implement and maintain backup and disaster recovery procedures
• Ensure multiple copies of data are backed up and stored off-site
• Provide workarounds and fixes in the event of IT service disruptions

IT Security and Compliance

• Adhere to IT security policies and compliance standards.
• Complete required documentation and follow security and policy processes.
• Maintain up-to-date security control lists for all IT systems and data.
  

Housekeeping

• Keep user and group lists updated, purging redundant data according to the data retention policy.
• Ensure servers, cloud platforms, and other IT systems contain relevant and active information only.

Technical Documentation

• Create and maintain technical documentation for IT infrastructure and processes
• Update and maintain audits and run books

Helpdesk Escalation

• 
  Act as an escalation point for the helpdesk team

Requirements

• Proven experience in a Systems Administrator or similar role
• Strong knowledge of on-premise and cloud infrastructure maintenance and troubleshooting
• Proficiency in Office 365, Jamf, Intune, VMware ESXi, Networking, and storage systems
• Familiarity with cloud services such as Okta, Slack, Zoom, Adobe suite and more
• Experience in implementing and maintaining backup and disaster recovery procedures
• Strong understanding of IT security policies and compliance standards. Ideally worked in a Cyber Essentials or ISO27001 environments
• Excellent problem-solving and communication skills
• Ability to manage and prioritise multiple tasks and projects
• Strong attention to detail and commitment to delivering high-quality work
• Relevant certifications (e.g., VMware, Microsoft, CompTIA) are a plus