Job Summary
As an IMS Core Performance & Optimization Engineer, your role involves ensuring the optimal performance, availability, and efficiency of the IMS Core network. You will be responsible for monitoring IMS KPIs, analyzing service performance, identifying optimization opportunities, and collaborating with Operations, Engineering, and Vendor teams to enhance voice and multimedia service quality across VoLTE, VoWiFi, and IMS services.
Key Responsibilities
- Monitor the performance and health of IMS Core network elements to ensure service availability and optimal operation.
- Analyze IMS KPIs and identify performance degradation affecting VoLTE, VoWiFi, SMS over IMS, and multimedia services.
- Perform root cause analysis for performance issues and recommend corrective and preventive actions.
- Optimize IMS Core configurations and parameters to improve service quality and network efficiency.
- Monitor signaling performance for SIP, Diameter, RTP, DNS, and SCTP protocols.
- Analyze traffic trends and perform capacity planning for IMS Core platforms.
- Generate daily, weekly, and monthly performance reports and provide optimization recommendations.
- Collaborate with Operations, Planning, Engineering, and Vendor teams to resolve performance-related issues.
- Validate network performance after software upgrades, patches, configuration changes, and new feature implementations.
- Ensure compliance with network performance KPIs, SLAs, and customer experience targets.
- Develop dashboards and automate performance reporting using scripting and reporting tools.
- Document optimization activities, performance improvements, and technical procedures.
- Participate in major incident investigations and support post-incident performance analysis.
- Recommend proactive optimization initiatives to improve network stability and customer experience.
Qualifications
- Bachelor's degree in Electronics & Communications Engineering, Computer Engineering, Telecommunications, or a related field.
- 5-7 years of experience in IMS Core Operations, Performance, or Optimization.
- Strong understanding of IMS architecture and VoLTE/VoWiFi service flows
- Knowledge of IMS Core network elements including but limited to:
P-CSCF, I-CSCF, S-CSCF, BGCF, MGCF, TAS, SBC, HSS / UDM, MRF
- Strong understanding of SIP call flows and IMS registration procedures.
- High Experience analyzing SIP traces and troubleshooting signaling issues.
- Strong Knowledge of telecom protocols including:
SIP, Diameter, RTP / RTCP, SCTP, DNS, HTTP/2 (5G IMS environments)
- Experience with IMS KPI monitoring and performance analysis.
- Familiarity with OSS Performance Management tools and performance reporting platforms.
- Basic knowledge of SQL and database querying.
- Basic scripting knowledge (Python, Bash, or Shell scripting) is preferred.
- Experience working with Linux operating systems.
- Strong analytical, troubleshooting, and problem-solving skills.
- Excellent communication and teamwork skills.
- Proficiency in Microsoft Office applications.
Preferred Skills
- Experience with Ericsson, Huawei, IMS platforms.
- Knowledge of VoLTE, VoWiFi, Rich Communication Services (RCS), and Emergency Call services.
- Experience with virtualization technologies such as OpenStack, Kubernetes, or OpenShift.
- Familiarity with performance monitoring tools such as Grafana, Prometheus, Kibana, Splunk, or Elasticsearch.
- Understanding of IP networking, QoS, DiffServ, and TCP/IP optimization.
- Experience with automation and KPI dashboard development.
- Knowledge of 5G Voice (VoNR) architecture and IMS interworking is considered an advantage.
