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 opportunities

- 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

- Good 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)
🏢 Recognized
📍 Chennai