Senior IT Systems Administrator, Lightmatter

• 6–8 years of hands-on experience in IT systems administration, network engineering, or a closely related role
• Strong Linux administration skills across RHEL/CentOS/Fedora and/or Ubuntu/Debian
• Experience administering Windows workstations
• Solid networking fundamentals: TCP/IP, DNS, DHCP, VLANs, routing protocols, network design, and firewall policy management
• Experience configuring and troubleshooting enterprise wireless, including RADIUS-based authentication (802.1X/EAP-TLS)
• Comfortable working in a lab or R&D environment alongside engineers and technical stakeholders
• Scripting proficiency for automation — Bash and/or Python and no/low-code tooling
• Strong communication skills; able to document clearly and work effectively with a highly technical audiences
• Willingness to learn new technologies and grow

Desirable

• The Sr. IT Systems Administrator must have a strong background in networking, Linux systems, and experience with Windows, focused on supporting and evolving IT environments with our engineering team
• You'll be the first line of support for highly technical issues, own the buildout of more robust and secure network and server infrastructure, and collaborate closely with our Engineering teams in a hands-on, fast-moving environment. This role also touches broader IT responsibilities as needed
• You'll operate with a high degree of autonomy and be trusted to make good decisions — experienced enough to own problems independently and leave things meaningfully better than you found them
• Serve as first-line support for technical issues in our engineering environments, triaging and resolving networking, server, and connectivity problems
• Design, deploy, and harden network infrastructure in lab environments — switching, routing, VLANs, firewalls, and wireless
• Administer and maintain Linux servers across our mix of distributions (primarily RHEL/CentOS/Fedora and Ubuntu/Debian)
• Administer and maintain Windows-driven lab equipment and computers
• Help build lab network and systems toward greater robustness, security, and maintainability — this is a build role, not just a keep-the-lights-on role
• Manage identity, access, and authentication systems including RADIUS/802.1X and integration with cloud identity providers
• Automate routine administrative tasks through scripting (Bash, Python, or similar)
• Maintain clear, accurate documentation of infrastructure topology, configurations, and runbooks
• Collaborate with Engineering and IT peers on cross-functional infrastructure projects
• Evaluate and recommend tooling and process improvements that raise the bar on reliability and security