Senior Infrastructure Administrator (all genders)

As a Senior Infrastructure Administrator, you will act as a versatile generalist who also possesses deep, specialised expertise in network topics. While you will be the definitive owner of the network and firewall infrastructure, approximately 80% of your time will be dedicated to broader product and continuous improvement work. This includes managing Microsoft technologies, automating processes, overseeing cloud servers, and implementing robust security measures. The remaining 20% of your day-to-day will involve resolving escalated tickets, which often take the form of mini-projects such as enabling new business applications, resolving complex network blocks, or configuring specialized customer environments via Zscaler. 

What you'll do

• Administer and maintain network, firewall, and Zscaler environments using deep specialist knowledge to ensure persistent security and operational uptime across the enterprise.
• Manage Microsoft technologies, cloud server infrastructure, and security patch cycles to deliver a consistently hardened and up-to-date infrastructure posture.
• Leverage AI and automation tooling to eliminate repetitive manual administration tasks and accelerate infrastructure operations across the team.
• Drive long-term infrastructure strategy by owning the multi-year roadmap for network and firewall modernization, including Lucanet's Berlin data centre and cloud environments.
• Proactively monitor system health to detect and remediate emerging risks before they escalate into organization-wide outages or security incidents.
• Act as the definitive subject matter expert for network and firewall topics, providing guidance and recommendations that shape infrastructure decisions across Lucanet.
• Collaborate cross-functionally with engineering, security, and operations teams to align infrastructure changes with broader business objectives and sprint delivery goals.