Network L2 Technician

Role Summary Senior hands-on network technician responsible for advanced installation, turn-up, troubleshooting, and validation of data center network infrastructure under engineering direction. Key Responsibilities Perform advanced switch/router installation and turn-up tasks: rack/stack, power-up, console access, image validation, baseline configuration, and feature enablement per runbooks. Execute L2/L3 troubleshooting using structured methods (interface counters, logs, spanning-tree, VLANs, Layer 3 adjacency checks) and resolve complex incidents during build windows. Validate physical and logical connectivity: optics selection, fiber polarity verification, link aggregation, VLAN trunking, and end-to-end ping/trace tests. Lead staging and burn-in activities; coordinate maintenance windows and support change implementation with accurate documentation. Mentor L1/L0 technicians; review work for correctness (labeling, patching, port mapping) and enforce ESD/tooling best practices. Update as-built network records (port maps, serials, rack elevations, IP allocations) in the designated system of record. Required Skills And Knowledge Strong understanding of CCNA-level networking concepts: IP addressing, VLANs, trucking, STP, EtherChannel/LAG, Layer 3 fundamentals (static routes, OSPF basics), and troubleshooting. Hands-on familiarity with data center cabling and optics: SFP/SFP+/QSFP form factors, fiber types (SM/MM), polarity, and connector care. Ability to follow and improve runbooks/MOPs; disciplined change control and rollback planning. Proficiency with common toolsets: console servers, terminal emulators, basic automation/scripting exposure, and ticketing systems. Strong documentation habits and attention to detail in asset/port records. Certifications / Training Preferred: CCNA or equivalent demonstrated competence.