This role involves end-to-end ownership of IMS domains across Ericsson and Nokia networks, focusing on design, troubleshooting, and service assurance while ensuring network stability and compliance.
Join our Team
About This Opportunity
We are seeking an End-to-End IMS Expert (Ericsson & Nokia) to join our team. This role will be responsible for end-to-end ownership of IMS domains across Ericsson and Nokia network architectures, covering design, configuration, upgrades, troubleshooting and service assurance.
As a senior subject matter expert, you will ensure network stability, performance, scalability and security, while supporting operations, transformation and managed services handover initiatives. The role requires close collaboration with L2/L3 support teams, vendors and customer stakeholders.
What You Will Do
You Will Bring
Key Qualifications
Education: Bachelor's degree or equivalent in Electronics, Telecommunications, Computer Science, or a related discipline.
Experience:
Relevant years of relevant experience in IMS operations, engineering, or managed services.
Strong expertise in Ericsson core network environments.
Technical Skills:
Ericsson IMS products (CSCF, MTAS, SBG, UDM, ENUM, etc.).
Virtualization / Cloud: vEPC, VNFs, NFVI, OpenStack, Kubernetes
Domain Knowledge:
GSM, GPRS, WCDMA, LTE, 5G Core (NSA/SA)
Signaling protocols: Diameter, SIP, GTP-C/GTP-U, HTTP/2
About This Opportunity
We are seeking an End-to-End IMS Expert (Ericsson & Nokia) to join our team. This role will be responsible for end-to-end ownership of IMS domains across Ericsson and Nokia network architectures, covering design, configuration, upgrades, troubleshooting and service assurance.
As a senior subject matter expert, you will ensure network stability, performance, scalability and security, while supporting operations, transformation and managed services handover initiatives. The role requires close collaboration with L2/L3 support teams, vendors and customer stakeholders.
What You Will Do
- Provide end-to-end technical ownership of IMS networks across Ericsson platforms.
- Perform configuration, upgrades, updates and redeployment activities across Packet Core and IMS nodes as part of incident resolution or planned changes.
- Handle incident, problem and change management, including review and closure of TT, CR and AT on a daily basis.
- Act as Expert support for complex network issues impacting data and voice services.
- Ensure compliance with MSTOP processes, operational governance and best practices.
- Ensure security policies, password policies, access controls and audits are implemented and periodically reviewed across all nodes.Participate in root cause analysis (RCA) and
- preventive actions to improve network stability and reduce recurring issues.
- Support managed service handover, knowledge transfer and shadowing activitiesfor operations teams.
- Contribute to the creation, review and enhancement of SOPs, runbooks and operational procedures.
- Actively participate in technical discussions, architecture reviews and optimization initiatives to improve overall network performance and customer experience.
- Coordinate with vendor support, engineering teams and customer stakeholders during major incidents, changes and network upgrades.
You Will Bring
- Strong end-to-end expertise in IMS architecture, operations and troubleshooting.
- Hands-on experience with Ericsson IMS nodes, including virtualized and cloud-based deployments.
- Deep understanding of mobile core technologies across 2G/3G/4G/5G (NSA/SA)environments.
- Excellent troubleshooting, analytical and RCA skills with the ability to handle high-severity incidents.
- Strong understanding of security compliance, access management and audit requirements in telecom networks.
- Effective communication and stakeholder management skills, with the ability to lead technical discussions and bridge operations and engineering teams.
- Ability to work independently with minimal supervision and take ownership of critical network domains.
Key Qualifications
Education: Bachelor's degree or equivalent in Electronics, Telecommunications, Computer Science, or a related discipline.
Experience:
Relevant years of relevant experience in IMS operations, engineering, or managed services.
Strong expertise in Ericsson core network environments.
Technical Skills:
Ericsson IMS products (CSCF, MTAS, SBG, UDM, ENUM, etc.).
Virtualization / Cloud: vEPC, VNFs, NFVI, OpenStack, Kubernetes
Domain Knowledge:
GSM, GPRS, WCDMA, LTE, 5G Core (NSA/SA)
Signaling protocols: Diameter, SIP, GTP-C/GTP-U, HTTP/2
Ericsson Kolkata, West Bengal, IND Office
Ericsson Kolkata Hub Office
Planned smart‑green New Town with wide roads, parks and malls, minutes from the airport and close to Salt Lake’s IT hub. Eco Park and business parks like Ecospace add leisure and convenience for families and professionals.
Similar Jobs at Ericsson
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Lead emergency incident management to minimize service impact, drive rapid recovery, perform root cause analyses, facilitate management bridges and escalations, support network handovers, improve emergency and problem management processes, and mentor team members while maintaining shift coverage.
Top Skills:
Ebp (Ericsson Business Process)Ericsson PortfolioNetwork DiagramsRemote Access Tools
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Design, plan and optimize PS Core networks (MME, SGW, PGW, HSS, PCRF, eNodeB). Perform capacity planning, parameter tuning, QoS and KPI analysis, audits, upgrades and new installations. Lead engineering teams, handle customers, and support RFP, BoQ and ordering activities while applying Ericsson product knowledge and automation concepts.
Top Skills:
2G3G4GBoqCapacity PlanningDscEnodebEricsson ProductsHssIp CoreMmeNetwork OptimizationParameter TuningPcrfPgwPs CoreQosRfpSdu OptimizeSgw
Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
Lead 24x7 incident management for high-severity telecom outages, coordinate technical and management bridges, mobilize resources, handle escalations, communicate with customers, produce event reports and RCAs, collaborate with global teams, and drive process improvements to reduce incident impact.
Top Skills:
EricssonGnocIncident ManagementNocRoot Cause AnalysisSlasTelecom Network Infrastructure
What you need to know about the Kolkata Tech Scene
When considering the industries shaping India's tech scene, gaming might not immediately come to mind. However, in the last decade, increased internet usage and greater access to mobile devices have catapulted the industry to new heights, with Kolkata-based companies like Virtualinfocom, Red Apple Technologies and Digitoonz, at the forefront, driving the design and animation of new gaming titles for players.
