CEM SQM Engineer

Description

The candidate will drive daily/weekly/monthly reporting, and cross-functional initiatives to enhance end-user experience.

The role involves troubleshooting using CDRs, X2/S1AP/RRC signalling, Network KPIs, anomaly detection, and collaboration with IPTX/Device/IMS/Core/RAN/RF teams.

• Root Cause Analysis for protocol-level failures, outages, and performance drops.
• Compare and validate signalling fields , data across different platform and vendor data systems.
• Analyse success/failure trends across device categories and OS versions.
• Perform daily/weekly analysis on network KPIs at device and subscriber-activity (ex. YouTube, amazon, Netflix) level.
• Identify worst-performing cells, eNodeBs, gNodeBs, UE models, manufacturer and subscriber-activity.
• Troubleshoot issues such as:
• Analyse CDRs (SIP/RRC/X2/S1AP) messages for failure patterns.
• Hypothesize - Practice - Validate - Shikumika. Use the Rakuten Cycle to success in unknown territory.
• Build scripts to automate:
• Compare performance by mobile model (e.g., Google Pixel, Samsung, iPhone).
• Prepare CTO/leadership presentations, highlighting:
• Identify Model/Manufacture specific issues affecting user experience.

Requirements

1. KPI Monitoring & Analytics

3. Data Analysis & Automation

Seeking a highly experienced professional for Network KPI analysis, RCA, automation development, and service quality experience improvement initiatives across 4G/5G domains.

Soft Skills

5. Device / Model-Level Performance Analysis

4. RCA & Cross-Functional Coordination

2. CDR (SIP/RRC/X2/S1AP) & Protocol-Level Debugging

Technical Skills

• Work extensively with Python (NumPy/Pandas), Excel/ Power BI/SQL, and large datasets.
• KPI Anamoly detection
• Knowledge of KPI frameworks.
• Ability to present insights to leadership (CTO level).
• Able to handle high pressure workloads with structured delivery.
• Bachelor's Degree in Electronics/Electronics and Telecomm
• Strong understanding of E2E network KPIs
• Strong problem-solving and RCA writing ability.
• Deep understanding of LTE/5G NSA Call Flow, S1AP, X2AP, NAS signalling, app layer, device log analysis, and TCP/UDP/HTTP/HTTP2 protocols.
• SCG failure information (5G NSA)
• Excellent communication for cross-team collaboration.
• >10 years’ experience in Telecom service quality management, device log analysis, NAS signalling, app layer, and TCP/UDP/HTTP/HTTP2 protocol level log analysis
• Date/time filtering, binning, and performance trending
• Strong analytical skills in Python, Pandas, Excel, SQL.
• Hands-on experience with Wireshark logs.
• Experience with CDR datasets (SIP, S1AP, X2, RRC).

Benefits

Training + Development

Interview process

Visa Sponsorship

Security clearance