We are seeking an experienced Senior Engineer – Network Performance & Service Optimization Lead to support network quality management and optimize telecom service performance across core network environments. The role involves troubleshooting customer-impacting issues, analyzing network KPIs, supporting service validation, and ensuring high-quality mobile network performance.

Key Responsibilities:
Support network quality management and service optimization initiatives
Analyze critical customer issues and network performance discrepancies
Lead service validation and testing activities within core network environments.
Perform end-to-end trace analysis to identify root causes and support issue resolution.
Monitor and analyze Mobile Core Network KPIs to identify bottlenecks and optimization prospects
Conduct packet capture, network auditing, and diagnostic analysis
Collaborate with cross-functional teams on fault analysis and preventive measures
Support project implementation, UAT, migrations, and BAU activities




Provide technical guidance and mentorship to junior engineers
Support night/weekend deployments during critical upgrades or migrations when required

Requirements
Bachelor’s degree in Electronics, Telecommunications, Computer Science, or related field
7–10 years of experience in telecom core network operations and optimization
Experience working with Mobile Operators, MVNOs, MNVEs, or telecom vendors
Strong knowledge of CS Core Network technologies (MSS, MGW, SBC, STP, SMSC, HLR, IVR)
Good understanding of PS Core Network technologies (SGSN, SGW, PGW, PCRF, DNS, AAA)
Experience with IMS nodes (CSCF, TAS, MRF, ePDG)
Solid troubleshooting and network quality assurance skills
Valuable understanding of VoLTE, Voice, SMS, and Data call flows
Hands-on experience with telecom protocols such as SIP, MAP, GTP, SMPP, RTP, Gx, Gy, Ro
Experience using packet analysis and network tracing tools
Working knowledge of Jira and Confluence

📌 Senior Engineer Chennai
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📍 Chennai