Install, commission, maintain and troubleshoot LTE and 5G RAN and core/network systems across cell sites, central offices and data centers. Perform RF testing, microwave backhaul and fiber work, hardware replacements, network transport verification (VLAN, BGP/OSPF), OSS/NMS monitoring, incident response, planned maintenance, and on-call operations. Follow change management and safety procedures and use telecom test equipment and virtualization/Linux platforms.