Manager - Core Performance

Job Title:

TM - Core Performance

Designation:

Manager - Core Performance

Band:

M1

Function:

Technology

Sub-Function:

Central Operations Group :Core Performance-Active Operations

Reports To:

TL - Data Core Performance

Location Type:

Pune-COR

Job Purpose

The TM – Core Performance role requires strong knowledge of 4G LTE/EPC and 5G NSA/SA architecture, along with hands-on experience in Packet Core KPI monitoring, analysis, and troubleshooting. The role also requires a good understanding of core network elements, DNS, interfaces, protocols, Cloud/NFV infrastructure, and Cloud KPIs such as CPU, memory, disk, VM/container health, and network utilization. Key responsibilities include identifying KPI degradation, performing PCAP analysis, conducting troubleshooting and RCA, and coordinating with internal teams and vendors to maintain network performance and service stability.

Key Responsibilities

• PAN-India Core Monitoring: Monitor performance across multi-vendor core network nodes, including MME, SGW, PGW, and PCRF.
• Success Rate Tracking: Track key Packet Core success metrics, including S11 SR, ASR, PDN, LUSR, and WiFi-to-LTE handovers, and initiate timely corrective actions.
• Capacity and Throughput Management: Audit IP pool utilization and SGW/PGW throughput trends to support demand forecasting and capacity planning.
• Enterprise Platform Oversight: Monitor DRA/OCS performance and AAA/APN-wise KPIs to support enterprise service efficiency and stability.
• P1 Incident Response: Support high-priority incident resolution through real-time KPI analysis, alerting, and coordination with cross-functional teams.
• Reporting and Audits: Conduct parameter audits for quality compliance and publish weekly Data Core and Cloud KPI trend reports.
• Technology Evolution: Build knowledge across emerging technology areas, including WiFi, DNS, Cloud KPIs, and Packet Core 4G/5G architectures.
• Cloud Infrastructure Monitoring: Monitor infrastructure-level Cloud KPIs such as CPU load, virtualization latency, VM/container health, and virtual switch packet drops for cloud-native telecom functions.
• OpenSignal, Customer Complaints and User Experience Monitoring: Monitor OpenSignal KPIs, including download/upload speed, latency, packet loss, discard rate, and TTFB. Analyse customer complaints and experience indicators, correlate them with network KPIs to drive service improvements and corrective actions.

Technical/ Functional Competencies

• Packet Core KPI Monitoring: Track performance across MME, SGW, PGW, PCRF, and DNS elements.
• Enterprise Core Performance: Monitor DRA, OCS, PCRF, AAA, and APN performance indicators.
• Data Core Protocols: Understand S11, S5, and S8 interfaces, along with GTP, Diameter, and Radius protocols.
• Capacity Utilization Analysis: Analyse IP pool utilization, throughput trends, and demand projections.
• Network Performance Reporting and Alerting: Prepare KPI dashboards, configure threshold alerts, and support performance reporting.
• Cloud Infrastructure Performance: Understand RHOSP and RHOCP architectures and monitor key cloud performance indicators.
• User Experience KPI Correlation: Correlate OpenSignal, TTFB, latency, throughput, packet loss, and discard-rate metrics with network performance.

Behavioural & Leadership Competencies

• Analytical Thinking: Strong capability to dissect complex network data and troubleshoot underlying protocol issues.
• First-Time-Right Approach: High commitment to quality and accuracy in execution to minimize network downtime.
• Accountability & Ownership: Demonstrated capability to own network issues from initial detection through to final resolution.
• Digital Mindset: Adaptable to evolving cloud-native telecom technologies and automated monitoring systems.
• Collaboration: Proven track record of working effectively across cross-functional engineering and infrastructure teams.

Qualifications & Experience

Minimum Education Qualification

B.E./B.Tech — Electronics / Telecommunications / Computer Science.

Years of working experience

Minimum 4–6 years of experience in core network performance management or Packet Core operations, with exposure to multi-vendor 4G/VoLTE environments and a basic understanding of Cloud/NFV infrastructure.

Working Relationship

Internal Stakeholders

• TL - Data Core Performance (M2 - Direct Manager- 22001781)
• SNOC — INM, FM, CHM, PM teams
• COG Central Core Operations team
• Enterprise and APN operations teams
• IT Security and Compliance teams

External Stakeholders

• OEMs: Nokia, Ericsson, Cisco, Huawei, Mavenir, ZTE, RH teams.
• Managed Services Partners: Third-party operations and network monitoring vendors.
• Enterprise & Roaming Partners: Interconnectivity and national/international roaming carriers.