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

Role: Core Network Engineer (5G) Location: Richardson, TX - Fully Onsite Experience: 6-8 years relevant experience

• Design, deploy, operate, and maintain 5G Core Network (5GC) components including AMF, SMF, UPF, NRF, PCF, AUSF, and UDM across both 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 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).

In addition to the above, candidate should be familiar with 5G open source both SA and NSA and also connectivity with SEPP for roaming between 5G SA roaming partners . In addition, we also now need for the candidate to have experience with dealing with AI and using AI to add code using Codex or Groc or whatever as we enhance the 5G open-source Core platform. We currently have 2 5G core engineers that do all of that.

Nice To Have

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