: Solid understanding of 4G/5G cellular network architecture, including RAN (Radio Access Network), core, and transport. Hands-on experience with troubleshooting and diagnostics using tools like Wireshark, QXDM, and network monitoring systems to resolve performance and connectivity issues. Proficiency in analyzing 3GPP standards and specifications to understand call flows and network protocols (e.g., S1AP, GTP-C/U, Diameter). Experience with base station equipment from major vendors like Ericsson, Nokia, or Huawei, and the ability to perform software upgrades and configuration changes. Strong problem-solving skills to conduct root cause analysis of network outages and performance degradations, providing technical support to field engineers and end-users.