Network Operations Engineer II at Astreya in Dublin

Job description

Job Title: Network Operations Engineer II – (Deployment Support-FMS) Job Overview: The Network Operations Engineer II is an experienced technical role responsible for troubleshooting, restoring, and maintaining the health of Optical and IP networks in a 24x7 operational environment. This role serves as the primary escalation point for Network Operations Engineers I and works closely with Engineers III and Team Leads to resolve complex incidents and improve operational processes. This role combines hands-on execution with independent judgment. Engineers II are expected to own incidents from detection through restoration, perform in-depth multi-vendor troubleshooting, execute scheduled network changes, and mentor junior engineers, escalating only the most complex, cross-domain, or high-risk issues. Scope: • Serve as the second-level escalation point for optical and IP network incidents and alarms. • Independently troubleshoot and restore service for complex incidents across optical transport and IP routing domains. • Own incidents end-to-end, including stakeholder communication, vendor engagement, and post-incident follow-up. • Plan and execute scheduled maintenance activities and network changes within change management procedures. • Author and improve runbooks, procedures, and knowledge-base content. • Mentor and guide Network Operations Engineers I. Roles and Responsibilities: Incident Management & Advanced Troubleshooting • Receive and resolve escalations from Network Operations Engineers I, providing technical direction during active incidents. • Perform in-depth troubleshooting of optical (DWDM, CWDM) and IP (IPv4/IPv6, MPLS, BGP, OSPF) networks, including analysis of optical power levels, OSNR, BER/FEC counters, routing tables, protocol adjacencies, and traffic paths. • Isolate faults across layers and domains (fiber, optics, transport, routing) and drive incidents to restoration. • Act as incident owner for major service-impacting events on shift, coordinating technical resources and providing timely updates to Team Leads and stakeholders. • Escalate highly complex, architectural, or cross-organizational issues to Network Operations Engineers III, Engineering, or the Team Lead with clear diagnostic findings. Ticket, Case & Problem Management • Ensure accurate, detailed documentation for all cases worked, and review ticket quality for Engineers I.• Open and manage cases with vendor TACs (e.g., Cisco, Juniper, Ciena, Nokia, Infinera), supplying logs, diagnostics, and technical detail to accelerate resolution. • Perform root cause analysis (RCA) for significant incidents and contribute to post-incident reports and corrective action tracking. • Identify recurring issues and trends, and recommend preventive or corrective actions. • Validate service stability after restoration and confirm SLA adherence. Maintenance & Change Execution • Plan, prepare, and execute scheduled maintenance activities and network changes, including method-of-procedure (MOP) review, pre/post checks, and rollback planning. • Participate in change review processes and assess operational risk of proposed changes. • Support turn-up, testing, and acceptance of new circuits, services, and network elements. • Coordinate with field technicians, colocation facilities, ISPs, and service providers during maintenance and restoration activities. Mentorship, Process Improvement & Collaboration • Mentor, shadow, and train Network Operations Engineers I, leading knowledge-transfer sessions. • Author, review, and maintain runbooks, procedures, and knowledge-base articles. • Recommend improvements to monitoring, alarm correlation, and NOC tooling to reduce noise and improve detection. • Identify opportunities for scripting or automation of repetitive operational tasks. • Lead shift handoffs and produce clear, complete shift-turnover documentation. • Collaborate with Engineering, Planning, and other operational teams to resolve systemic issues. Required Qualifications &