Technical Authority Expert
Ericsson View all jobs
- Noida, Uttar Pradesh
- Permanent
- Full-time
We are seeking a highly motivated and skilled RAN & Core Performance Engineer to join our telecom network team. The candidate will be responsible for Performance KPI’s, assurance, troubleshooting, and optimization of both Radio Access Networks and Core Network (CS/PS/VAS) components. This role requires in-depth technical knowledge of mobile technologies (2G/3G/4G/5G/ NBIoT), Core, network architecture, and protocols, etc.
What you will do:
- Network performance management of 2G/3G/4G/5G/ NBIoT RAN.
- Perform KPI monitoring, root cause analysis, and performance tuning of radio networks.
- Collaborate with RF engineers for coverage and capacity planning.
- Troubleshoot site-level and cluster-level RAN issues (call drops, interference, handover failures).
- Support in Pre-post analysis for any new site integration, software upgrades, and feature implementation.
- Network performance management of Core domain (CS/PS/VAS), EPC/5GC components: MME, SGW, PGW, AMF, SMF, etc.
- KPI analysis and troubleshooting.
- Troubleshoot signalling and bearer path issues using protocols like GTP, Diameter, SCTP, SIP.
- Analyze call flows, CDRs, and trace logs for issue resolution.
- Support in Pre-post analysis for any new site integration, software upgrades, and feature implementation.
- Work with vendors for core software upgrades and capacity expansion.
- Bachelor's degree in Electronics/Telecommunications/Computer Science or related field.
- Strong understanding of RAN and Core (EPC, 5GC, NG-RAN, etc.).
- Need 9 to 12 years of experience.
- Experience with tools like Wireshark, TEMS, NetAct, ENM, OSS platforms, Kalix, Netcool, NGPM, Service now, SIGOS, EEA.
- Knowledge of telecom protocols: LTE/NR, GTP, S1AP, X2AP, Diameter, NAS, NGAP.
- Familiarity with network virtualization (NFV), SDN, and cloud-native core (preferred).
- Good analytical, problem-solving, and communication skills.
- Should be able to work in night Shift, On-call support rotation (as per project requirements)