Domain Support Specialist Job in For a Client of TeamLease Digital at Noida

➢ Good Technical Knowledge, configuration and troubleshooting experience

of the specific CORE nodes viz AMF/SMF/UPF/UDM/PCF/NRF/

SGSN/MME/GGSN/DNS /PCRF/PGW/SGW/ePDG/AAA.

➢ Perform software updates and upgrades on core network nodes while

ensuring service stability and minimal customer impact.

➢ Manage traffic optimization and load distribution across core network

elements such as MME, GGSN, SMF, and AMF to maintain balanced

network utilization.

➢ Implement and validate APN/DNN configurations in accordance with

network design and service requirements.

➢ Execute capacity-related subscriber migrations and load balancing

activities to maintain optimal network performance.

➢ Execute network changes during Maintenance Windows (MW) in

accordance with approved Change Requests (CR).

➢ Monitor node health, KPIs, and alarms during maintenance activities to

ensure network stability.

➢ Support 4G/5G Core network operations, including configuration

validation, troubleshooting, and performance optimization.

➢ Strong understanding and hands-on experience with 3GPP standards,

VoLTE/IMS related configurations within core network elements such as

MME and GGSN/PGW and Packet Switched (PS) Core protocols.

➢ Sound domain knowledge across 2G, 3G, 4G, and 5G technologies,

including VoWiFi.

➢ Hands-on experience in network configuration tasks including OSPF

configuration, IP pool management, OCS/DRA/PCRF integration, LAC

barring, CSFB, SRVCC, APN creation, BSC/RNC migration, and TAI-DB

management.

➢ Understanding of SS7 network architecture, along with GPRS, 3G,

LTE/EPC, and VoLTE call flows, and basic RF network concepts related to

GPRS.

➢ Knowledge of key Packet Core interfaces and protocols, including Gb, Gr,

Gi, Gn, IuPS, Gx, Gy, Gz, S1, S6a, S11, SGs, S10, N7, N26, N40, N4, N11,

N6 and related configuration and integration aspects.

➢ Understanding of Deep Packet Inspection (DPI) configurations and

related service policies.

➢ Good understanding of service awareness and differentiated charging

concepts within the packet core environment. Familiarity with latest

Packet Core technologies and architectures, including CUPS (Control and

User Plane Separation), F5 load balancing, Cloud -based deployments, 5G

NSA, 5G SA, and VoWiFi.

[6] Functional Skills:

➢ Review and validate MOP, CLI commands, SOPs, and design documents

prior to activity execution.

➢ Plan and schedule network activities based on planner requests,

operational priorities, and Maintenance Windows (MW).

➢ Perform activity execution using automation tools and scripts to improve

operational efficiency and reduce manual intervention.