Owns architecture, technical planning, and delivery of IMS lifecycle-management activities for telecom operators. Leads upgrades, migrations, expansions, testing, troubleshooting, service continuity, customer coordination, and technical handover across live networks. Responsibilities include validating IMS signaling and KPIs, preparing implementation and rollback plans, performing root-cause analysis, coordinating cross-functional teams, managing risks and documentation, estimating effort, and mentoring engineers.
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About this opportunity:
Own the architecture, technical planning, and delivery of IMS LCM scopes for telecom operators. Lead end-to-end lifecycle activities-from upgrades and patches to expansions, migrations, hardware replacements, maintenance, and decommissioning-while protecting service continuity and providing technical leadership across SDU and SDH teams.
What you will do:
The skills you bring:
"All academic credentials must be from recognized and accredited institutions and are further subject to verification."
About this opportunity:
Own the architecture, technical planning, and delivery of IMS LCM scopes for telecom operators. Lead end-to-end lifecycle activities-from upgrades and patches to expansions, migrations, hardware replacements, maintenance, and decommissioning-while protecting service continuity and providing technical leadership across SDU and SDH teams.
What you will do:
- Own technical design and execution for IMS nodes, including CSCF, TAS, SBC, MRF, DNS/ENUM, and HSS.
- Ensure solutions align with HLD/LLD, customer requirements, CPI, and 3GPP standards.
- Prepare and review NIRs, MOPs, upgrade, rollback, and contingency plans.
- Lead live-network LCM activities, upgrades, testing, acceptance, and handover.
- Validate VoLTE, VoWiFi, SIP/Diameter signaling, call flows, configurations, and KPIs.
- Troubleshoot complex IMS issues, perform RCA/CAPA, and provide L2/L3 support.
- Act as the technical contact for customers and coordinate with Cloud, PACO, Transport, and vendor teams.
- Track plans, risks, milestones, and technical documentation in JIRA/DSF.
- Support effort estimation, capacity planning, mentoring, and knowledge sharing.
The skills you bring:
- 10+ years of telecom experience with hands-on IMS LCM, upgrades, migrations, and live-network activities.
- Strong knowledge of IMS architecture: CSCF, TAS, SBC, MRF, DNS/ENUM, and HSS.
- Expertise in SIP, SDP, Diameter, RTP, VoLTE, VoWiFi, EPC/5GC, and 3GPP standards.
- Experience in IMS troubleshooting, signaling analysis, RCA, KPI monitoring, and tools such as Wireshark.
- Working knowledge of Linux/Unix, Kubernetes, OpenStack, Docker, NFV/SDN, and cloud-native environments.
- Exposure to Python, Shell, or Ansible automation and tools such as JIRA/DSF.
- Strong customer communication, stakeholder management, leadership, and problem-solving skills.
- Experience working in multi-vendor telecom environments.
- IMS/VoLTE or vendor product certifications.
- Kubernetes, OpenStack, AWS/Azure, Linux, Wireshark, or ITIL certification.
- Experience mentoring engineers and leading cross-functional technical teams.
- Safe and successful IMS upgrades and lifecycle activities.
- Service continuity with minimal network impact.
- Timely troubleshooting and resolution of technical issues.
- Accurate technical documentation, configurations, and handover.
"All academic credentials must be from recognized and accredited institutions and are further subject to verification."
Ericsson Bengaluru, Karnataka, IND Office
Ericsson Bengaluru Hub Office
Major tech campus on the Outer Ring Road with offices, food courts and services inside the park. Close to key residential areas, though busy, it’s central to Bengaluru’s tech ecosystem.
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