What is a packet core?

A Packet Core job involves managing and maintaining the core network infrastructure responsible for routing and processing mobile data traffic in telecom networks. Engineers in this role work with technologies like 4G LTE, 5G Core, and network function virtualization (NFV) to ensure efficient data flow between users and applications. Responsibilities include configuring, troubleshooting, and optimizing network elements such as SGW, PGW, MME, AMF, and UPF. This role requires expertise in protocols like GTP, Diameter, and SCTP, as well as experience with cloud-based core network solutions.