Job Description: We are seeking a highly skilled and experienced Senior Network Engineer with deep expertise in DWDM and SDH technologies to manage, integration, migration, Decom and support core transport network. This role is critical for legacy Decom and service migration for DWDM & SDH network. Key Responsibilities: Design, plan, implement, and optimize DWDM and SDH transmission networks . Configure and maintain optical equipment such Legacy 5200, Legacy 1696, OSN1800, GX550, PSAX, PSS36/64, OSN6800/8800, CORA DWDM Expansion, 130SCX10 Perform end-to-end provisioning, grooming, and capacity planning for optical circuits (STM-n, OTN, etc.). Troubleshoot and resolve complex issues related to optical and SDH networks using tools such as OTDR, OSA, BERT testers. Manage NMS/EMS systems (e.g., Huawei U2000, Ciena OneControl, Nokia NFM-T) for proactive monitoring and fault resolution. Implement and verify protection schemes (SNCP, MSP, MS-SPRing) for network redundancy and reliability. Coordinate with vendors, field teams, and internal departments during new deployments and upgrades. Lead network audits, preventive maintenance, and performance optimization tasks. Document network architecture, procedures, and issue resolution reports. Train and mentor junior engineers and support staff. Required Skills and Experience: Bachelor’s degree in Electronics, Telecommunications, or related field. 8 years of experience in optical transmission technologies, with strong hands-on experience in DWDM and SDH networks. In-depth understanding of optical layer principles, including fiber impairments, optical power budgets, and link design. Experience with Ciena, Infinera, Huawei, Nokia, or Cisco optical transmission platforms. Strong knowledge of ITU-T standards such as G.709, G.783, G.703, G.957. Familiarity with synchronization protocols and timing distribution methods. Experience in service provisioning, circuit management, and fault analysis. Proficient with optical and SDH test instruments. Preferred Certifications: Huawei HCIP-Transmission or HCIE-Transmission Nokia Optical Network Certification (ONC) Ciena CCNE FOA Certified Optical Technician Soft Skills: Excellent analytical and problem-solving abilities Effective communicator with strong documentation skills Ability to work independently and lead teams during high-pressure situations Strong customer and vendor interaction experience