Core Network Engineer (5G) :: Richardson, TX - Fully Onsite :: Fulltime

About the role

Core Network Engineer (5G) based in Richardson, TX – fully onsite. The position requires 6‑8 years of relevant experience designing, deploying, operating, and maintaining 5G Core Network components.

Responsibilities

• Design, deploy, operate, and maintain 5G Core Network (5GC) components including AMF, SMF, UPF, NRF, PCF, AUSF, and UDM across SA and NSA deployments.
• Deploy, manage and operate 5G core environments in high‑availability and geo‑redundant configurations, ensuring resilience, scalability, and service continuity.
• Support inter‑PLMN connectivity including roaming, SEPP, and secure interconnect architectures.
• Support mediation requirements for billing/charging and performance statistics on the 5G core platform.
• Perform end‑to‑end call‑flow debugging and protocol‑level troubleshooting across N1, N2, N3, N4, N6, N10, N11, and N12 interfaces.
• Implement and support network slicing, policy control, and service function chaining.
• Ensure compliance with relevant 3GPP specifications, security requirements, and interface protocols (e.g., HTTP/2, PFCP, SCTP).
• Work with 5G open‑source implementations (both SA and NSA) and integrate SEPP for roaming between 5G SA partners.
• Apply AI‑assisted coding (e.g., Codex, Groc) to enhance the 5G open‑source core platform.

Requirements

• 6‑8 years of relevant experience in 5G core engineering.
• Location: Richardson, TX – fully onsite.

Qualifications

• Experience with IMS integration.
• Familiarity with private networks (NPN) and public network integration.
• Basic knowledge of Kubernetes / cloud‑based deployments.
• Experience with global roaming architectures.
• DevOps / CI‑CD exposure (secondary priority).