Systems Administrator

In this role, you will maintain and secure the internal infrastructure, ensuring compliance with TSA regulations and timely patching. You’ll work with Network Engineering and IT teams to prevent issues, support audits, and drive secure, resilient systems in a scale-up environment. You’ll contribute to upgrades and replacements, implementing robust logging, monitoring and hardening standards. If you enjoy hands-on security-focused administration and influencing ongoing infrastructure improvements, this is your opportunity to shape a fast-growing network platform.

• 25 days holiday (increasing with service)
• Birthday leave
• Cycle to work scheme
• Flexible WFH policy
• Private Health Cover
• Friendly, collaborative culture

• Install, configure and maintain software, hardware and OS features supporting Network Engineering and Operations
• Ensure secure storage, backup and retrieval of systems and data
• Document systems and updates; identify improvement areas
• Assist Network Operations Centre with complex problems and replace failed components on-site
• Maintain compliance with TSA requirements and apply security patches within defined timescales
• Monitor and remediate vulnerabilities; track patching with TSA and external audits
• Implement logging, monitoring and alerting across managed infrastructure
• Work with Security, Network Technology and IT teams to address security risks
• Support security incident investigations and remediation related to infrastructure

• Minimum 5 years in server, storage and networking environments
• Strong hands-on experience with DNS (BIND or equivalent), DHCP, NTP
• Experience with NetBox/IPAM/DCIM and network automation
• Ability to assess vendor security advisories and apply patches or upgrades
• Experience planning and executing infrastructure upgrades with minimal disruption
• Proven patch management and vulnerability remediation experience (Tenables/Qualys or equivalent)
• Understanding of security hardening and secure baselines; log management
• Experience with vulnerability management and external audit compliance
• Experience with incident response and security monitoring

• Proactive problem-solving
• Collaborative cross-functional communication
• Attention to detail and thorough documentation
• DNS (ISC BIND)
• DHCP (ISC Kea, FreeRadius)
• NTP