Key qualifications :10+ years experience working in a telecom environment doing L3 support or similar rolesProtocol signalling analysis and troubleshooting in different protocols and interfaces of 2G/3G/4G/VoLTE networksSolid understanding of OSI model and TCP/IP networking, both IPv4 and IPv6.Analysis of signalling traces using WiresharkSS7 signalling network troubleshootingProficiency with Grafana, Prometheus, ElasticSearchBasic Python / Linux / Bash knowledgeAbility to work on a 24/7 on-call rotating rosterExcellent written and verbal communication skillsExcellent interpersonal skillsProficient English written and spokenOXIO is committed to fostering a diverse, equitable, and inclusive workplace where all employees feel valued and empowered. You will keep the performance of our telecom network at optimum levels by ensuring that network/application problems are detected and corrected according to agreed KPI and SLA.Key responsibilities :TechnicalGood understanding of Mobile Networks 2G/3G/4G/5GTroubleshooting 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.)Troubleshooting International Roaming issues (voice and data) reported by outbound subscribers.