Senior Network Administrator

About this role

<div class="content-intro"><p style="line-height: 1.4;"><span style="color: rgb(0, 0, 0); font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Who we are</strong></span></p> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">DigiCert is a global leader in intelligent trust. We protect the digital world by ensuring the security, privacy, and authenticity of every interaction. Our AI-powered DigiCert ONE platform unifies PKI, DNS, and certificate lifecycle management, to secure infrastructure, software, devices, messages, AI content and agents. Learn why more than 100,000 organizations, including 90% of the Fortune 500, choose DigiCert to stop today’s threats and prepare for a quantum-safe future at <a href="http://www.digicert.com/">www.digicert.com</a></span></p></div><p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>Job summary</strong></span></p> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">The Corporate Network Infrastructure team is responsible for the operation, monitoring, maintenance, and support of DigiCert's global office network. This position serves as a first responder for network incidents and operational requests, providing administration, troubleshooting, and support of enterprise LAN, WAN, wireless, and network security services across corporate office locations worldwide.</span></p> <p style="line-height: 1.4;"> </p> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><strong>What you will do</strong></span></p> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Network Administration</span></p> <ul> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Administer and support corporate LAN, WAN, and wireless network environments across global office locations.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Configure, monitor, and troubleshoot switches, firewalls, and wireless infrastructure.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Manage VLANs, routing, switching, DNS, DHCP, VPN connectivity, and network access services.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Perform network performance monitoring and proactive issue resolution.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Participate in incident response, troubleshooting, and root-cause analysis.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Work with Internet service providers and telecommunications carriers to diagnose and resolve circuit outages, routing issues, and service-impacting events.</span></li> </ul> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Network Security & Access Control</span></p> <ul> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Administer Palo Alto firewalls, including security policy changes, VPNs, NAT, and traffic analysis.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Support network segmentation and secure access initiatives.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Implement and troubleshoot 802.1X authentication for wired and wireless environments.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Work closely with security and endpoint teams to ensure secure network access.</span></li> </ul> <p style="line-height: 1.4;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Wireless Networking</span></p> <ul> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial, helvetica, sans-serif; font-size: 12pt;">Support enterprise wireless infrastructure across corporate office locations.</span></li> <li style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"><span style="font-family: arial,…