Senior Network Engineer

Who we are 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 www.digicert.com Job summary • The Network Infrastructure team is responsible for the operation, monitoring, maintenance, and support of DigiCert's global production network. • This position serves as a first responder for network incidents and operational requests, providing initial troubleshooting, monitoring, and administration of production network systems. What you will do • Network Operations & Monitoring • Monitor the health, performance, and availability of global production network infrastructure. • Review device logs, alerts, and monitoring systems to identify and respond to operational issues. • Perform initial troubleshooting and incident response for network-related events. • Troubleshoot network, application, database, DNS, load balancing, and service connectivity issues across data center and cloud environments. • Work with Internet service providers, telecommunications carriers, cloud providers, application teams, database administrators, and third-party vendors to diagnose and resolve connectivity, routing, latency, and service-impacting issues. • Participate in incident response activities and assist with service restoration efforts during production outages. • Escalate complex issues to senior engineers while providing accurate documentation and diagnostics. • Participate in root cause analysis activities following service-impacting incidents • Implement routine network configuration changes following established procedures. • Perform basic firewall policy modifications and access control changes. What you will have • Associate's or Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field, or an equivalent combination of education and relevant experience. • 5+ years of experience supporting enterprise, service provider, or data center network environments. • Understanding of: TCP/IP, DNS, Routing and switching fundamentals, VLANs and network segmentation, Firewall concepts, VPN technologies • Understand routing protocols and route troubleshooting concepts. • Experience using network monitoring, logging, and observability platforms to identify, investigate, and respond to infrastructure issues. • Experience reviewing system and device logs to assist with troubleshooting and incident response activities. • Experience responding to operational incidents and working within established incident management processes. • Experience troubleshooting network, application, database, DNS, and service connectivity issues in collaboration with service providers, cloud providers, vendors, and internal technical teams. • Ability to perform network troubleshooting and isolate issues across routing, switching, firewall, load balancing, and cloud-connected environments. Strong analytical and problem-solving skills. • Ability to follow operational procedures in a highly controlled production environment • Excellent written and verbal communication skills • Ability to participate in on-call support rotation and monthly maintenance. Nice to have • Familiarity with Linux-based systems. • Exposure to modern data center networking architectures, including Leaf-Spine fabric designs. • Familiarity with data center networking technologies such as: Border Gateway Protocol (BGP) Virtual Extensible LAN (VXLAN) Ethernet VPN (EVPN) • Understanding of overlay and underlay networking concepts within modern data center environments. Experience supporting Arista EOS-based switching environments. • Experience using Arista CloudVision for network management, monitoring, automation, and operational visibility. • Ability to perform under pressure during incidents. • Ability to work effectively within a global infrastructure team. Benefits • Generous time off policies • Top shelf benefits • Education, wellness and lifestyle support To protect candidate information and maintain a secure hiring process, all applications must be submitted through our careers portal. Resumes or CVs sent directly via email will not be reviewed or considered. #LI-SD1