Lead complex technical investigations and customer support for Ericsson 4G/5G RAN solutions across Australia and New Zealand. Responsibilities include protocol and log analysis, troubleshooting critical incidents, reviewing solution implementations, supporting optimization and feature deployment, managing customer service requests, coordinating stakeholders, preparing root-cause analyses, and delivering technical knowledge sessions. The role requires deep Ericsson RAN expertise, RF design and tuning knowledge, 3GPP and interface understanding, and extensive telecommunications support experience.