Ericsson Dual Mode Core (DMC), Linux System Administration, Sctp, Dns, shell scripting, Ansible, Tcp/ip, Rest Apis, Diameter, Python, cloud-native telecom deployments, GitOps, HTTP/2, ip networking, charging, 5G SA Core, subscriber data management, signalling policy control, 4G EPC, CI/CD pipeline, high availability and geo-redundant network designs