• Design and dimension the Packet Core (EPC/5GC) to ensure scalability for data growth. • Manage roaming coverage with IPX/GRX providers, roaming sponsors, and direct bi-lateral agreements. • Define specific network profiles and configurations for HSS/UDM subscribers, including QoS, AMBR, and APN subscriptions. • Architect the DNS hierarchy for the mobile core, focusing on S-NAPTR records for MME/SGSN to discover PGW/SGW/UPF nodes. • Plan and implement IP routing strategies, including ASN (Autonomous System Number) management and BGP peering for internet and roaming connectivity. • Manage Access Point Name configurations for various service types, including IMS, Internet, and IoT. • Perform deep-dive troubleshooting of signaling procedures across 3G (Iu-PS), 4G (S1-MME, S11, S5/S8), and 5G NSA (EN-DC). • Apply in-depth understanding of 3GPP standards for 3G, 4G EPC, and 5G NSA mobile data call-flows. • Analyze and optimize critical flows, specifically Attach/Registration (Authentication vectors, ULR/ULA, Create Session) and Bearer Management (Dedicated bearer creation for VoLTE/QCI 1 and default bearers). • Utilize protocol analyzers such as Wireshark or Tektronix to decode ASN.1 based messages and Diameter signaling (Gx, Gy, S6a, S5, S8, GTP-C, GTP-U). • Act as the primary technical interface with core network vendors, system integrators, and partners. • Lead technical evaluations and design reviews for core network expansions. • Manage the ATP (Acceptance Testing) phase to ensure vendor deliveries meet operational standards prior to live deployment.

• Assist in research, evaluation, and recommendation of networking hardware such as routers, switches, firewalls, remote access systems, and network management systems. • Assist in designing, configuring, or upgrading local and wide area networks (LAN/WAN/WLAN). • Assist in identifying, diagnosing, and resolving connection, reliability, or performance issues. • Keep the workroom neat, organized, and secure. • Work under close to moderate supervision with limited latitude for independent judgment. • Consult with senior peers on non-complex projects to learn through experience. • Apply basic application management and administration skills with a moderate level of proficiency. • Represent the department and the organization favorably and in accordance with established Company standards and associate attributes. • Work within defined ITIL processes such as change and incident management. • Other duties as assigned by management.

• Develop scalable, secure, and high-performing network architecture across enterprise, data center, and cloud environments. • Engage with clients to understand business requirements, develop technical solutions, and contribute to statements of work (SOWs). • Lead the implementation and migration of networking solutions, ensuring seamless integration and minimal disruption. • Design and deploy solutions involving Cisco, Meraki, Aruba, Fortinet, and Palo Alto technologies. • Ensure network designs meet security best practices, compliance standards (PCI, HIPAA, NIST), and client requirements. • Engineer and deploy SD-WAN, cloud networking, and hybrid cloud solutions for enterprise clients. • Oversee project execution, provide technical mentorship to engineers, and document designs, configurations, and best practices. • Serve as a trusted advisor for clients, helping them optimize network performance and security.

• Acts as an escalation point of contact for the Network Administration team, providing advanced technical guidance and issue resolution for complex network incidents and service requests. • Support the integration and deployment of cloud-based networking solutions on platforms such as AWS and Azure, working closely with engineering teams to ensure seamless connectivity and functionality. • Assist in the planning and execution of network expansions, and migrations, coordinating with stakeholders to ensure minimal disruption and alignment with business priorities. • Implement and maintain security measures to protect network infrastructure, collaborating with engineering teams to ensure compliance with industry standards and best practices. • Contribute to the development and refinement of network policies and procedures, leveraging industry knowledge and expertise to enhance operational efficiency and effectiveness. • Participate in network implementation meetings, including interpreting architecture standards and translating approved designs into deployed configurations. • Conduct regular network performance assessments, analyzing metrics and logs to identify trends and potential areas for improvement, and recommend enhancements to support strategic objectives. • Assess and interpret network performance data, drawing actionable insights to support continuous improvement initiatives. • Communicate and articulate complex technical concepts to diverse audiences and contribute to collaborative problem-solving efforts.