Design and maintain DWDM, PTN, and GPON-based access network infrastructure. Configure, manage, and optimize OLT platforms to support FTTH services. Troubleshoot incidents and resolve service-impacting issues across transmission and access layers. Monitor network alarms, performance, and outages using NOC/NMS tools (e.g., U2000, ZSmart). Plan and document network expansion and upgrade projects in coordination with central engineering. Supervise regional teams and contractors during installation and maintenance activities. Ensure compliance with engineering SOPs, safety standards, and quality control processes. Prepare BoQs, technical reports, and capacity planning documentation. Coordinate with central engineering and field teams for deployment and operations.