Mobile Telecom Support Engineer

Key Responsibilities

• Troubleshoot complex issues by analyzing end-to-end call traces in several protocols and interfaces (MAP, TCAP, RANAP, DIAMETER, SIP, GTP, GTPv2, S1AP, SGsAP, IuCS, IuPS, Gr, Gn/Gp, S6a, S11, S5/S8, Gm, Rx, Cx etc.)
• Troubleshoot International Roaming issues (voice and data) reported by outbound subscribers.
• Work together with worldwide mobile operator engineers to make live tests and perform analysis to find the root cause.
• Create on-demand dashboards to monitor specific metrics or to validate restoring of services after failures.
• Provide technical support to NOC engineers to analyze and solve issues.
• Liaise with MNOs to represent the telecom team on the country.
• Responsive to L3 telecom incidents, NOC hotline calls and emails.
• Perform L3-level troubleshooting and resolves or escalates on telecom matters.
• Develop KPIs and other metrics to monitor key aspects in mobile network performance.
• Develop training material related to signalling / troubleshooting / best practices.
• Report and coordinate faults rectification with other operators and service providers.
• Able to troubleshoot, document, and assess proper escalation channel and team or group.

Key Qualifications

• 10+ years experience working in a telecom environment doing L3 support or similar roles.
• Protocol signalling analysis and troubleshooting in different protocols and interfaces of 2G/3G/4G/VoLTE networks.
• Solid understanding of OSI model and TCP/IP networking, both IPv4 and IPv6.
• Analysis of signalling traces using Wireshark.
• SS7 signalling network troubleshooting.
• Proficiency with Grafana, Prometheus, ElasticSearch.
• Basic Python / Linux / Bash knowledge.
• Able to work on a 24/7 on-call rotating roster.
• Excellent written and verbal communication skills.
• Excellent interpersonal skills.
• Proficient English written and spoken.