Senior Network Engineer

IrishJobs

Limerick, Wexford, Ireland

Limerick, Wexford, Ireland

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About

Level 3 Network Operations Engineer Location: Limerick (Fully Onsite) Contract Type: Fixed-Term Contract Start Date: ASAP Overview PFH Technology is seeking an experienced Level 3 Network Operations Engineer to join our Network Operations team. The successful candidate will be responsible for supporting, maintaining, and troubleshooting large-scale ISP, carrier, and enterprise network environments, ensuring high availability, performance, and service reliability across critical network infrastructure .This role is ideal for a highly skilled network professional with strong experience across multi-vendor networking platforms, carrier technologies, Linux systems, Kubernetes, network automation, and operational support within complex service provider environments Key Responsibilities Provide Level 2 and Level 3 operational support across large-scale ISP, carrier, and enterprise network environment Troubleshoot and resolve complex routing and switching issues across multi-vendor platforms including Cisco IOS/IOS-XE, Juniper Junos, and Ciena SAO Support, maintain, and troubleshoot Layer 2 technologies including VLANs, QinQ, LACP, STP, LLDP, and Ethernet transport service Support and troubleshoot Layer 3 technologies including OSPF, BGP, HSRP, VRRP, MPLS, and IP service Investigate, diagnose, and resolve customer-impacting incidents, service degradations, and major outages within agreed service level Perform network analysis and fault investigation using packet captures, SNMP monitoring, syslogs, telemetry, and network diagnostic tool Execute planned network changes, upgrades, maintenance activities, and infrastructure deployments through formal change management processe Collaborate with Core, Access, Optical, Enterprise, and Vendor teams to diagnose and resolve complex infrastructure issue Support broadband infrastructure platforms including Broadband Network Gateways (BNG), AAA services, and subscriber management environment Administer and troubleshoot Linux-based systems and network management platform Support and maintain Kubernetes (K8s) environments, including troubleshooting pods, containers, services, and cluster-related issue Monitor network health, performance, capacity, and availability using operational monitoring platforms and management tool Administer and support network monitoring platforms such as Cacti, Oxidized, and other operational toolin Perform Root Cause Analysis (RCA) following major incidents and produce detailed incident and problem report Liaise with vendors including Cisco, Juniper, Nokia, Ciena, and third-party suppliers during escalations, fault investigations, and service restoration activitie Required Skills & Experie Proven experience supporting large-scale ISP, carrier, or enterprise network environmen Strong hands-on experience with Cisco IOS/IOS-XE, Juniper Junos, and multi-vendor network infrastructu Experience supporting carrier Ethernet technologies including VLAN, QinQ, LACP, STP, LLDP, and Ethernet transport servic Strong knowledge of routing protocols including BGP, OSPF, MPLS, HSRP, VRRP, and IP networking concep Experience troubleshooting complex routing, switching, and service provider network issu experience with Linux administration (RHEL, CentOS, Ubuntu) in production environmen Experience supporting Kubernetes (K8s) environments, including container and service troubleshooti Experience working with Broadband Network Gateways (BNG), AAA platforms, and subscriber management systems is highly desirab Strong understanding of network monitoring and management technologies including SNMP, Syslog, telemetry, packet analysis, and performance monitoring too Experience with monitoring platforms such as Cacti, Oxidized, or equivalent network management solutio Knowledge of network automation and scripting using Python or similar languag Experience performing packet analysis using tools such as Wireshark or tcpdu Familiarity with ITIL processes, incident management, problem management, and formal change management procedur Ability to work effectively in high-pressure operational environments and participate in on-call support rotatio Skills: Network monitoring Juniper VPLS Routing protocols Checkpoint Cisco Wireless Cisco Technology

TLNT1_IJ

Limerick, Wexford, Ireland

Languages

English

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