Senior Engineer

Cynosure Corporate Solutions; Tiruchirappalli; On-site; INR 1,800,000 - 3,400,000; Full time

Job summary

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

Responsibilities include end-to-end trace analysis, service validation, testing, and collaboration with cross-functional

Qualifications

• Bachelor's degree in Electronics, Telecommunications, Computer Science, or a related field.
• 7–10 years of experience in telecom core network operations and optimization.
• Experience with Mobile Operators, MVNOs, or telecom vendors.
• Strong knowledge of CS Core Network technologies (MSS, MGW, SBC, STP, SMSC, HLR, IVR).
• Understanding of PS Core Network technologies (SGSN, SGW, PGW, PCRF, DNS, AAA).
• Experience with IMS nodes (CSCF, TAS, MRF, ePDG).
• Troubleshooting and network quality assurance skills.
• Understanding of VoLTE, Voice, SMS, and Data call flows.
• Experience with telecom protocols such as SIP, MAP, GTP, SMPP, RTP, Gx, Gy, Ro.

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.

Skills

Network optimization

Troubleshooting

Core network operations

Packet tracing

VoLTE knowledge

SIP/MAP/GTP

Jira/Confluence

Education

Bachelor's degree in Electronics/Telecom/CS

Tools

Jira

Confluence

Job description

Cynosure Corporate Solutions | Full time

Chennai City Corporation, India | Posted on 05/08/2026

Cynosure Corporate Solutions is a human capital services company. Our focus is to provide Executive Search, Recruitment, Training, Temporary Staffing services, Statutory Compliance's, and other HR aligned services. We understand the business goals of our clients and their need to align human resources to these goals. We are committed to provide high quality manpower in accordance to global standards and their requirements. Our candidates stand testimony to our professional competency.

We work with clients in IT/ITES, Manufacturing, Automobile, Health, Telecom, Media.

Job Description

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)
  
• Strong 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