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MS Specialist Core

Job in Kolkata, West Bengal, India
Listing for: Infinera
Full Time position
Listed on 2026-03-05
Job specializations:
  • Manufacturing / Production
    Systems Engineer
Salary/Wage Range or Industry Benchmark: 200000 - 650000 INR Yearly INR 200000.00 650000.00 YEAR
Job Description & How to Apply Below
A Managed Services Core Specialist is responsible for the day-to-day operations and maintenance of core network infrastructure within a managed services environment. This role requires a deep understanding of network technologies, troubleshooting skills, and the ability to work independently and as part of a team. Customer Services in different areas such as technical support, account support, operations, maintenance, network design deployment integration transformation, and education.
You Have:
B.E./B.Tech/M.E/M.Tech with 3+ years of experience in Ericsson Packet Core Domain (5G Core Nodes AMF, SMF, UPF, NRF and LTE Nodes - MME, EPG SGW/PGW, PCRF).
Understanding on call flows of 5G / LTE like Registration, Re-Registration, De-Registration, VoLTE Call, Break-in / Break-Out, Hand-over, roaming etc.
Excellent knowledge on LTE and 5G EPC / 5G Core Architecture Interface and Protocols.
Good Understanding on Service Based Architecture concepts/Network Slicing
If would be nice If you also had:
Knowledge on Cloud Native Architecture and experience on Microservices, Kubernetes, Dockers, Containers
Exposure in IMS architecture with all the nodes
Actively contribute to fault management/configuration activities of 5G SA Core Network. coordination with Project teams for HLD/LLD/TOL/Design reviews, and network integration activities.
Resolve trouble ticket/CR within SLA and maintain a quality service to end customer.
MOP/WI preparation for the activities and new learnings
Coordinating with care team for finding and analyzing the RCAs
Guiding team members to execute complex & critical configuration changes
Tracking of issues related to tools and timely escalation as per pre-defined matrix
Attending governance call with region and internal teams. Also responsible for analyzing and implementation of feedbacks from customers.
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